vuejs2.0 高级实战全网稀缺音乐WebAPP

src简单的介绍

入口文件main.js

import 'babel-polyfill'  //写在第一位
import Vue from 'vue'
import App from './App'
import router from './router'
import fastclick from 'fastclick'
import VueLazyload from 'vue-lazyload'
import store from './store'import 'common/stylus/index.styl'/* eslint-disable no-unused-vars */
// import vConsole from 'vconsole'fastclick.attach(document.body)Vue.use(VueLazyload, {loading: require('common/image/default.png')  //传一个默认参数
})/* eslint-disable no-new */
new Vue({el: '#app',router,store,render: h => h(App)
})

babel-polyfill是es6底层铺垫即支持一些API，比如promise,balbel-runtime为es6语法转义，fastclick解决移动端点击300毫秒的延迟

devDependencies 里面的插件(比如各种loader，babel全家桶及各种webpack的插件等)只用于开发环境，不用于生产环境，因此不需要打包；而 dependencies 是需要发布到生产环境的，是要打包的。

dependencies：应用能够正常运行所依赖的包。这种 dependencies 是最常见的，用户在使用 npm install 安装你的包时会自动安装这些依赖。
devDependencies：开发应用时所依赖的工具包。通常是一些开发、测试、打包工具，例如 webpack、ESLint、Mocha。应用正常运行并不依赖于这些包，用户在使用 npm install 安装你的包时也不会安装这些依赖。

css-loader (opens new window): 处理 CSS 中的 url 与 @import，并将其视为模块引入,style-loader 用以将 CSS 注入到 DOM 中，原理为使用 DOM API 手动构建 style 标签，并将 CSS 内容注入到 style 中。

{"name": "vue-music","version": "1.0.0","description": "音乐播放器","author": "songhao","private": true,"scripts": {"dev": "node build/dev-server.js","start": "node build/dev-server.js","build": "node build/build.js","lint": "eslint --ext .js,.vue src"},"dependencies": {"babel-runtime": "^6.0.0","vue": "^2.3.3","vue-router": "^2.5.3","vuex": "^2.3.1","fastclick": "^1.0.6","vue-lazyload": "1.0.3","axios": "^0.16.1","jsonp": "0.2.1","better-scroll": "^0.1.15","create-keyframe-animation": "^0.1.0","js-base64": "^2.1.9","lyric-parser": "^1.0.1","good-storage": "^1.0.1"},"devDependencies": {"autoprefixer": "^6.7.2","babel-core": "^6.22.1","babel-eslint": "^7.1.1","babel-loader": "^6.2.10","babel-plugin-transform-runtime": "^6.22.0","babel-preset-env": "^1.3.2","babel-preset-stage-2": "^6.22.0","babel-register": "^6.22.0","babel-polyfill": "^6.2.0","chalk": "^1.1.3","connect-history-api-fallback": "^1.3.0","copy-webpack-plugin": "^4.0.1","css-loader": "^0.28.0","eslint": "^3.19.0","eslint-friendly-formatter": "^2.0.7","eslint-loader": "^1.7.1","eslint-plugin-html": "^2.0.0","eslint-config-standard": "^6.2.1","eslint-plugin-promise": "^3.4.0","eslint-plugin-standard": "^2.0.1","eventsource-polyfill": "^0.9.6","express": "^4.14.1","extract-text-webpack-plugin": "^2.0.0","file-loader": "^0.11.1","friendly-errors-webpack-plugin": "^1.1.3","html-webpack-plugin": "^2.28.0","http-proxy-middleware": "^0.17.3","webpack-bundle-analyzer": "^2.2.1","semver": "^5.3.0","shelljs": "^0.7.6","opn": "^4.0.2","optimize-css-assets-webpack-plugin": "^1.3.0","ora": "^1.2.0","rimraf": "^2.6.0","url-loader": "^0.5.8","vue-loader": "^11.3.4","vue-style-loader": "^2.0.5","vue-template-compiler": "^2.3.3","webpack": "^2.3.3","webpack-dev-middleware": "^1.10.0","webpack-hot-middleware": "^2.18.0","webpack-merge": "^4.1.0","stylus": "^0.54.5","stylus-loader": "^2.1.1","vconsole": "^2.5.2"},"engines": {"node": ">= 4.0.0","npm": ">= 3.0.0"},"browserslist": ["> 1%","last 2 versions","not ie <= 8"]
}

index.html

<!DOCTYPE html>
<html><head><meta charset="utf-8"><meta name="viewport"content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no"><title>vue-music</title></head><body><div id="app"></div><!-- built files will be auto injected --></body>
</html>

APP.vue

<template><div id="app" @touchmove.prevent><m-header></m-header><tab></tab><keep-alive><router-view></router-view></keep-alive>//全局的播放器组件<player></player></div>
</template><script type="text/ecmascript-6">import MHeader from 'components/m-header/m-header'import Player from 'components/player/player'import Tab from 'components/tab/tab'export default {components: {MHeader,Tab,Player}}
</script>

jsonp原理

它发送的不是一个ajax请求，是创建了一个script标签不受同源策略的影响，通过src指向服务器的地址，在地址后面加一个callback=a，服务器解析这个URL发现有一个callback=a的参数，返回数据的时候调用这个a方法，前端定义的a方法就能直接拿到数据

最后返回的时候从1开始截取，是因为上面的方法已经添加了&符号，所有返回&符之后的内容

jsonp的封装这个js放置于静态文件夹下

import originJsonp from 'jsonp'   //jsonp 结合promise 封装export default function jsonp(url, data, option) {url += (url.indexOf('?') < 0 ? '?' : '&') + param(data)return new Promise((resolve, reject) => {originJsonp(url, option, (err, data) => {if (!err) {resolve(data)} else {reject(err)}})})
}export function param(data) {let url = ''for (var k in data) {let value = data[k] !== undefined ? data[k] : ''url += '&' + k + '=' + encodeURIComponent(value)//新型写法 es6写法//url += `&${k}=${encodeURIComponent(value)}`   es6语法}return url ? url.substring(1) : ''
}

推荐页面 recommend.js 使用jsonp 调取轮播图的数据

用到了es6对象的合并方法Object.assign，浅拷贝的方法

import jsonp from 'common/js/jsonp'
import {commonParams, options} from './config'export function getRecommend() {const url = 'https://c.y.qq.com/musichall/fcgi-bin/fcg_yqqhomepagerecommend.fcg'const data = Object.assign({}, commonParams, {  //assign es6语法platform: 'h5',uin: 0,needNewCode: 1})return jsonp(url, data, options)
}

config.js 因为数据是爬的，所以定义了通用的参数对象，私有的参数通过assign方法添加

export const commonParams = {g_tk: 1928093487,inCharset: 'utf-8',outCharset: 'utf-8',notice: 0,format: 'jsonp'
}export const options = {param: 'jsonpCallback'
}export const ERR_OK = 0

components/recommend.vue 在组件中调用接口

export default {data() {return {recommends: []}},created() {this._getRecommend()},methods: {_getRecommend() {getRecommend().then((res) => {if (res.code === ERR_OK) {this.recommends = res.data.slider}})}},components: {Slider}}

<div v-if="recommends.length" class="slider-wrapper" ref="sliderWrapper"><slider><div v-for="item in recommends"><a :href="item.linkUrl"><img class="needsclick" @load="loadImage" :src="item.picUrl"><!-- 如果fastclick监听到有class为needsclick就不会拦截 --></a></div></slider></div>

这里用到了slider组件以及slot的知识，也遇到了一个坑，因为数据响应必须确定有数据v-if="recommends.length"才能保证插槽的正确显示

dom.js ，比较重要

操作dom的文件，位于通用静态文件

//是否有指定class存在
export function hasClass(el, className) {let reg = new RegExp('(^|\\s)' + className + '(\\s|$)')return reg.test(el.className)
}
//如果存在什么都不做，否则就设置添加
export function addClass(el, className) {if (hasClass(el, className)) {return}let newClass = el.className.split(' ')newClass.push(className)el.className = newClass.join(' ')
}//展现了方法的设置技巧，一个getter、一个setter
export function getData(el, name, val) {const prefix = 'data-'if (val) {return el.setAttribute(prefix + name, val)}return el.getAttribute(prefix + name)
}
//下面的方法，在歌手详情页的自组件music-list用到，用于控制属性的兼容性
let elementStyle = document.createElement('div').stylelet vendor = (() => {let transformNames = {webkit: 'webkitTransform',Moz: 'MozTransform',O: 'OTransform',ms: 'msTransform',standard: 'transform'}for (let key in transformNames) {if (elementStyle[transformNames[key]] !== undefined) {return key}}return false
})()export function prefixStyle(style) {if (vendor === false) {return false}if (vendor === 'standard') {return style}
//数据的拼接，首字母大写加上剩余的部分return vendor + style.charAt(0).toUpperCase() + style.substr(1)
}

从下面开始开始编写项目

首先是推荐页面，由轮播图和热门歌单组成

轮播图的数据通过jsonp可以得到，但是热门歌单因为有referer、host的认证，所以需要在dev-server.js设置代理，（欺骗服务器）用到axios而不是jsonp

bulid目录下dev-server.js处理代理

require('./check-versions')()var config = require('../config')
if (!process.env.NODE_ENV) {process.env.NODE_ENV = JSON.parse(config.dev.env.NODE_ENV)
}var opn = require('opn')
var path = require('path')
var express = require('express')
var webpack = require('webpack')
var proxyMiddleware = require('http-proxy-middleware')
var webpackConfig = require('./webpack.dev.conf')
var axios = require('axios') //第一步// default port where dev server listens for incoming traffic
var port = process.env.PORT || config.dev.port
// automatically open browser, if not set will be false
var autoOpenBrowser = !!config.dev.autoOpenBrowser
// Define HTTP proxies to your custom API backend
// https://github.com/chimurai/http-proxy-middleware
var proxyTable = config.dev.proxyTablevar app = express()var apiRoutes = express.Router()   //以下是后端代理接口 第二步apiRoutes.get('/getDiscList', function (req, res) {var url = 'https://c.y.qq.com/splcloud/fcgi-bin/fcg_get_diss_by_tag.fcg'axios.get(url, {headers: {referer: 'https://c.y.qq.com/',host: 'c.y.qq.com'},params: req.query}).then((response) => {res.json(response.data)  //输出到浏览器的res}).catch((e) => {console.log(e)})
})apiRoutes.get('/lyric', function (req, res) {  //这是另一个接口下节将用到var url = 'https://c.y.qq.com/lyric/fcgi-bin/fcg_query_lyric_new.fcg'axios.get(url, {headers: {referer: 'https://c.y.qq.com/',host: 'c.y.qq.com'},params: req.query}).then((response) => {var ret = response.dataif (typeof ret === 'string') {var reg = /^\w+\(({[^()]+})\)$/var matches = ret.match(reg)if (matches) {ret = JSON.parse(matches[1])}}res.json(ret)}).catch((e) => {console.log(e)})
})app.use('/api', apiRoutes)   //最后一步var compiler = webpack(webpackConfig)var devMiddleware = require('webpack-dev-middleware')(compiler, {publicPath: webpackConfig.output.publicPath,quiet: true
})var hotMiddleware = require('webpack-hot-middleware')(compiler, {log: () => {}
})
// force page reload when html-webpack-plugin template changes
compiler.plugin('compilation', function (compilation) {compilation.plugin('html-webpack-plugin-after-emit', function (data, cb) {hotMiddleware.publish({ action: 'reload' })cb()})
})// proxy api requests
Object.keys(proxyTable).forEach(function (context) {var options = proxyTable[context]if (typeof options === 'string') {options = { target: options }}app.use(proxyMiddleware(options.filter || context, options))
})// handle fallback for HTML5 history API
app.use(require('connect-history-api-fallback')())// serve webpack bundle output
app.use(devMiddleware)// enable hot-reload and state-preserving
// compilation error display
app.use(hotMiddleware)// serve pure static assets
var staticPath = path.posix.join(config.dev.assetsPublicPath, config.dev.assetsSubDirectory)
app.use(staticPath, express.static('./static'))var uri = 'http://localhost:' + portvar _resolve
var readyPromise = new Promise(resolve => {_resolve = resolve
})console.log('> Starting dev server...')
devMiddleware.waitUntilValid(() => {console.log('> Listening at ' + uri + '\n')// when env is testing, don't need open itif (autoOpenBrowser && process.env.NODE_ENV !== 'testing') {opn(uri)}_resolve()
})var server = app.listen(port)module.exports = {ready: readyPromise,close: () => {server.close()}
}

recommend.js 使用axios 调取热门歌单的数据

export function getDiscList() {const url = '/api/getDiscList'const data = Object.assign({}, commonParams, {platform: 'yqq',hostUin: 0,sin: 0,ein: 29,sortId: 5,needNewCode: 0,categoryId: 10000000,rnd: Math.random(),format: 'json'})return axios.get(url, {params: data}).then((res) => {return Promise.resolve(res.data)})
}

slider轮播图组件用到了dom.js中的addclass方法，引入了better-scroll，注意一下window.addEventListener，初始化的时候这个方法this._setSliderWidth(true)传入true，来控制2倍的dom复制，特别注意初始化dots的方法

<template><div class="slider" ref="slider"><div class="slider-group" ref="sliderGroup"><slot></slot></div><div class="dots"><spanclass="dot":class="{active: currentPageIndex === index }"v-for="(item, index) in dots"></span></div></div>
</template><script type="text/ecmascript-6">
import { addClass } from "common/js/dom";
import BScroll from "better-scroll";export default {name: "slider",props: {loop: {type: Boolean,default: true},autoPlay: {type: Boolean,default: true},interval: {type: Number,default: 4000}},data() {return {dots: [],currentPageIndex: 0};},mounted() {setTimeout(() => {this._setSliderWidth();this._initDots();this._initSlider();if (this.autoPlay) {this._play();}}, 20);window.addEventListener("resize", () => {if (!this.slider) {return;}this._setSliderWidth(true);this.slider.refresh();});},//keep-active下的声明周期，相当于小程序的onshowactivated() {if (this.autoPlay) {this._play();}},//组件销毁后清除定时器，有利于内存释放deactivated() {clearTimeout(this.timer);},beforeDestroy() {clearTimeout(this.timer);},methods: {//计算轮播的宽度_setSliderWidth(isResize) {this.children = this.$refs.sliderGroup.children;let width = 0;let sliderWidth = this.$refs.slider.clientWidth;for (let i = 0; i < this.children.length; i++) {let child = this.children[i];addClass(child, "slider-item");child.style.width = sliderWidth + "px";width += sliderWidth;}if (this.loop && !isResize) {width += 2 * sliderWidth;}this.$refs.sliderGroup.style.width = width + "px";},//初始化BScroll_initSlider() {this.slider = new BScroll(this.$refs.slider, {scrollX: true,scrollY: false,momentum: false,snap: true,snapLoop: this.loop,snapThreshold: 0.3,snapSpeed: 400});// 设置currentPageIndexthis.slider.on("scrollEnd", () => {let pageIndex = this.slider.getCurrentPage().pageX;if (this.loop) {pageIndex -= 1;}this.currentPageIndex = pageIndex;if (this.autoPlay) {this._play();}});//手动出发的时候清楚定时器this.slider.on("beforeScrollStart", () => {if (this.autoPlay) {clearTimeout(this.timer);}});},//初始化dots_initDots() {this.dots = new Array(this.children.length);},//轮播关键实现_play() {let pageIndex = this.currentPageIndex + 1;if (this.loop) {pageIndex += 1;}this.timer = setTimeout(() => {this.slider.goToPage(pageIndex, 0, 400);}, this.interval);}}
};
</script><style scoped lang="stylus" rel="stylesheet/stylus">
@import '~common/stylus/variable';.slider {min-height: 1px;.slider-group {position: relative;overflow: hidden;white-space: nowrap;.slider-item {float: left;box-sizing: border-box;overflow: hidden;text-align: center;a {display: block;width: 100%;overflow: hidden;text-decoration: none;}img {display: block;width: 100%;}}}.dots {position: absolute;right: 0;left: 0;bottom: 12px;text-align: center;font-size: 0;.dot {display: inline-block;margin: 0 4px;width: 8px;height: 8px;border-radius: 50%;background: $color-text-l;&.active {width: 20px;border-radius: 5px;background: $color-text-ll;}}}
}
</style>

loading组件

<template><div class="loading"><img width="24" height="24" src="./loading.gif"><p class="desc">{{title}}</p></div>
</template>
<script type="text/ecmascript-6">export default {props: {title: {type: String,default: '正在载入...'}}}
</script>
<style scoped lang="stylus" rel="stylesheet/stylus">@import "~common/stylus/variable".loadingwidth: 100%text-align: center.descline-height: 20pxfont-size: $font-size-smallcolor: $color-text-l
</style>

接下来开发推荐页面滚动列表--仿原声应用的scorllview，所以抽出来一个公用组件Scroll.vue

<template><div ref="wrapper"><slot></slot></div>
</template><script type="text/ecmascript-6">import BScroll from 'better-scroll'export default {props: {probeType: {type: Number,default: 1},click: {type: Boolean,default: true},listenScroll: {type: Boolean,default: false},data: {type: Array,default: null},pullup: {type: Boolean,default: false},beforeScroll: {type: Boolean,default: false},refreshDelay: {type: Number,default: 20}},mounted() {setTimeout(() => {this._initScroll()}, 20)},methods: {_initScroll() {if (!this.$refs.wrapper) {return}this.scroll = new BScroll(this.$refs.wrapper, {probeType: this.probeType,click: this.click})if (this.listenScroll) {let me = thisthis.scroll.on('scroll', (pos) => {me.$emit('scroll', pos)})}if (this.pullup) {this.scroll.on('scrollEnd', () => {if (this.scroll.y <= (this.scroll.maxScrollY + 50)) {this.$emit('scrollToEnd')}})}if (this.beforeScroll) {this.scroll.on('beforeScrollStart', () => {this.$emit('beforeScroll')})}},disable() {this.scroll && this.scroll.disable()},enable() {this.scroll && this.scroll.enable()},refresh() {this.scroll && this.scroll.refresh()},//用于歌手页面scrollTo() {this.scroll && this.scroll.scrollTo.apply(this.scroll, arguments)},//用于歌手页面scrollToElement() {this.scroll && this.scroll.scrollToElement.apply(this.scroll, arguments)}},watch: {data() {setTimeout(() => {this.refresh()}, this.refreshDelay)}}}
</script><style scoped lang="stylus" rel="stylesheet/stylus"></style>

recommend.vue 推荐页面

可能会遇到一个问题，初始化后不能滚动，是因为高度的问题，所以给img加了一个方法，注意h2标签的应用，以及图片懒加载，这里提到了vuex的使用，那怎么给vuex提交数据细心的同学可能会发现↓↓↓↓↓ scroll的用法，只对下面的第一个div起作用

通过图片的高度撑起盒子，通过loadImage的方法限制让方法只执行一次！很实用的方法

<template><div class="recommend" ref="recommend"><scroll ref="scroll" class="recommend-content" :data="discList"><div><div v-if="recommends.length" class="slider-wrapper" ref="sliderWrapper"><slider><div v-for="item in recommends"><a :href="item.linkUrl"><img class="needsclick" @load="loadImage" :src="item.picUrl"></a></div></slider></div><div class="recommend-list"><h1 class="list-title">热门歌单推荐</h1><ul><li @click="selectItem(item)" v-for="item in discList" class="item"><div class="icon"><img width="60" height="60" v-lazy="item.imgurl"></div><div class="text"><h2 class="name" v-html="item.creator.name"></h2><p class="desc" v-html="item.dissname"></p></div></li></ul></div></div><div class="loading-container" v-show="!discList.length"><loading></loading></div></scroll><router-view></router-view></div>
</template><script type="text/ecmascript-6">import Slider from 'base/slider/slider'import Loading from 'base/loading/loading'import Scroll from 'base/scroll/scroll'import {getRecommend, getDiscList} from 'api/recommend'import {playlistMixin} from 'common/js/mixin'import {ERR_OK} from 'api/config'import {mapMutations} from 'vuex'export default {mixins: [playlistMixin],data() {return {recommends: [],discList: []}},created() {this._getRecommend()this._getDiscList()},methods: {handlePlaylist(playlist) {const bottom = playlist.length > 0 ? '60px' : ''this.$refs.recommend.style.bottom = bottomthis.$refs.scroll.refresh()},//通过图片的高度撑起盒子，通过下面的方法限制让方法只执行一次！loadImage() {if (!this.checkloaded) {this.checkloaded = truethis.$refs.scroll.refresh()}},selectItem(item) {this.$router.push({path: `/recommend/${item.dissid}`})this.setDisc(item)},_getRecommend() {getRecommend().then((res) => {if (res.code === ERR_OK) {this.recommends = res.data.slider}})},_getDiscList() {getDiscList().then((res) => {if (res.code === ERR_OK) {this.discList = res.data.list}})},...mapMutations({setDisc: 'SET_DISC'})},components: {Slider,Loading,Scroll}}
</script><style scoped lang="stylus" rel="stylesheet/stylus">@import "~common/stylus/variable".recommendposition: fixedwidth: 100%top: 88pxbottom: 0.recommend-contentheight: 100%overflow: hidden.slider-wrapperposition: relativewidth: 100%overflow: hidden.recommend-list.list-titleheight: 65pxline-height: 65pxtext-align: centerfont-size: $font-size-mediumcolor: $color-theme.itemdisplay: flexbox-sizing: border-boxalign-items: centerpadding: 0 20px 20px 20px.iconflex: 0 0 60pxwidth: 60pxpadding-right: 20px.textdisplay: flexflex-direction: columnjustify-content: centerflex: 1line-height: 20pxoverflow: hiddenfont-size: $font-size-medium.namemargin-bottom: 10pxcolor: $color-text.desccolor: $color-text-d.loading-containerposition: absolutewidth: 100%top: 50%transform: translateY(-50%)
</style>

为什么变量定义在created里面而不是data里面？

因为这些变量不需要被监听，定义在data、props中的变量vue都会添加一个getter、setter方法用来监听数据变化实现双向数据绑定

向上滚动Y值为负数

代码详细注释 listview组件

<template><scroll @scroll="scroll":listen-scroll="listenScroll":probe-type="probeType":data="data"class="listview"ref="listview"><ul><li v-for="group in data" class="list-group" ref="listGroup"><h2 class="list-group-title">{{group.title}}</h2><uL><li @click="selectItem(item)" v-for="item in group.items" class="list-group-item"><img class="avatar" v-lazy="item.avatar"><span class="name">{{item.name}}</span></li></uL></li></ul><div class="list-shortcut" @touchstart.stop.prevent="onShortcutTouchStart" @touchmove.stop.prevent="onShortcutTouchMove"@touchend.stop><ul><li v-for="(item, index) in shortcutList" :data-index="index" class="item":class="{'current':currentIndex===index}">{{item}}</li></ul></div><div class="list-fixed" ref="fixed" v-show="fixedTitle"><div class="fixed-title">{{fixedTitle}} </div></div><div v-show="!data.length" class="loading-container"><loading></loading></div></scroll>
</template><script type="text/ecmascript-6">import Scroll from 'base/scroll/scroll'import Loading from 'base/loading/loading'import {getData} from 'common/js/dom'const TITLE_HEIGHT = 30  //向上顶起的元素高度const ANCHOR_HEIGHT = 18 // 字母导航的高度 （字体高度加上padding值）export default {//接受参数的类型（父组件传入的数据）props: {data: {type: Array,default: []}},//计算属性computed: {//展示字母导航的数据shortcutList() {return this.data.map((group) => {return group.title.substr(0, 1)})},//字母浮层的数据fixedTitle() {if (this.scrollY > 0) {return ''}return this.data[this.currentIndex] ? this.data[this.currentIndex].title : ''}},data() {return {scrollY: -1, //scroll组件传入的y轴currentIndex: 0, //当前联动的下标diff: -1 //控制字母浮层是否被下一块内容顶上去，（是一个顶上去的效果）}}, //为什么要定义在created里面而不是data里面？created() {this.probeType = 3  //scroll组件需要的参数，表示不节流，慢滚动与快滚动都生效this.listenScroll = true //是否触发scroll组件的监听事件this.touch = {} //定义的一个touch事件this.listHeight = [] //获取list的高度，是一个数组},methods: {selectItem(item) {this.$emit('select', item)},onShortcutTouchStart(e) {let anchorIndex = getData(e.target, 'index')let firstTouch = e.touches[0]this.touch.y1 = firstTouch.pageYthis.touch.anchorIndex = anchorIndexthis._scrollTo(anchorIndex)},onShortcutTouchMove(e) {let firstTouch = e.touches[0]this.touch.y2 = firstTouch.pageY//最后 | 0 表示向下取整let delta = (this.touch.y2 - this.touch.y1) / ANCHOR_HEIGHT | 0let anchorIndex = parseInt(this.touch.anchorIndex) + deltathis._scrollTo(anchorIndex)},refresh() {this.$refs.listview.refresh()},//获取scroll组件传入的scroll值scroll(pos) {this.scrollY = pos.y},//计算列表的高度_calculateHeight() {this.listHeight = []const list = this.$refs.listGrouplet height = 0this.listHeight.push(height)for (let i = 0; i < list.length; i++) {let item = list[i]height += item.clientHeightthis.listHeight.push(height)}},_scrollTo(index) {//控制touchstart,点击边缘地带if (!index && index !== 0) {return}//控制touchstart,点击边缘地带if (index < 0) {index = 0} else if (index > this.listHeight.length - 2) { // 控制touchmove,向上滚动的时候，可能大于最后一项的优化index = this.listHeight.length - 2}// 控制touchstart，点击后通过手动设置scrollY实现，点击联动this.scrollY = -this.listHeight[index]//实现列表的滚动this.$refs.listview.scrollToElement(this.$refs.listGroup[index], 0)}},watch: {//监听data，当数据变化，延迟20ms等都dom渲染完毕，再计算data() {setTimeout(() => {this._calculateHeight()}, 20)},//监听scrollY的值 scrollY(newY) {const listHeight = this.listHeight// 当滚动到顶部，newY>0if (newY > 0) {this.currentIndex = 0return}// 在中间部分滚动for (let i = 0; i < listHeight.length - 1; i++) {let height1 = listHeight[i]let height2 = listHeight[i + 1]if (-newY >= height1 && -newY < height2) {this.currentIndex = ithis.diff = height2 + newYreturn}}// 当滚动到底部，且-newY大于最后一个元素的上限this.currentIndex = listHeight.length - 2},//控制字母浮层是否要被顶上去diff(newVal) {let fixedTop = (newVal > 0 && newVal < TITLE_HEIGHT) ? newVal - TITLE_HEIGHT : 0if (this.fixedTop === fixedTop) {return}this.fixedTop = fixedTopthis.$refs.fixed.style.transform = `translate3d(0,${fixedTop}px,0)`}},components: {Scroll,Loading}}</script><style scoped lang="stylus" rel="stylesheet/stylus">@import "~common/stylus/variable".listviewposition: relativewidth: 100%height: 100%overflow: hiddenbackground: $color-background.list-grouppadding-bottom: 30px.list-group-titleheight: 30pxline-height: 30pxpadding-left: 20pxfont-size: $font-size-smallcolor: $color-text-lbackground: $color-highlight-background.list-group-itemdisplay: flexalign-items: centerpadding: 20px 0 0 30px.avatarwidth: 50pxheight: 50pxborder-radius: 50%.namemargin-left: 20pxcolor: $color-text-lfont-size: $font-size-medium.list-shortcutposition: absolutez-index: 30right: 0top: 50%transform: translateY(-50%)width: 20pxpadding: 20px 0border-radius: 10pxtext-align: centerbackground: $color-background-dfont-family: Helvetica.itempadding: 3pxline-height: 1color: $color-text-lfont-size: $font-size-small&.currentcolor: $color-theme.list-fixedposition: absolutetop: 0left: 0width: 100%.fixed-titleheight: 30pxline-height: 30pxpadding-left: 20pxfont-size: $font-size-smallcolor: $color-text-lbackground: $color-highlight-background.loading-containerposition: absolutewidth: 100%top: 50%transform: translateY(-50%)
</style>

Singer class类

export default class Singer {constructor({id, name}) {this.id = idthis.name = namethis.avatar = `https://y.gtimg.cn/music/photo_new/T001R300x300M000${id}.jpg?max_age=2592000`}
}

歌手页面 singer.vue ?‍? 代码注释，字母排序

引入listview组件，有一个20毫秒的定时器，关键在于左右联动的思路很重要，以及关于diff的处理增强用户体验

<template><div class="singer" ref="singer"><list-view @select="selectSinger" :data="singers" ref="list"></list-view><router-view></router-view></div>
</template><script>import ListView from 'base/listview/listview'import {getSingerList} from 'api/singer'import {ERR_OK} from 'api/config'import Singer from 'common/js/singer'import {mapMutations} from 'vuex'  //对Mutations的封装是个语法糖import {playlistMixin} from 'common/js/mixin'const HOT_SINGER_LEN = 10const HOT_NAME = '热门'export default {mixins: [playlistMixin],data() {return {singers: []}},created() {this._getSingerList()},methods: {handlePlaylist(playlist) {const bottom = playlist.length > 0 ? '60px' : ''this.$refs.singer.style.bottom = bottomthis.$refs.list.refresh()}, //跳到歌手详情页面selectSinger(singer) {this.$router.push({path: `/singer/${singer.id}`})//调用被映射出来的方法，把数据传递到vuex里面，到这一步完成setter设置this.setSinger(singer)},_getSingerList() {getSingerList().then((res) => {if (res.code === ERR_OK) {this.singers = this._normalizeSinger(res.data.list)}})},//整理数据结构_normalizeSinger(list) {//首先定义热门数据对象let map = {hot: {title: HOT_NAME,items: []}}list.forEach((item, index) => {//默认前10条为热门数据if (index < HOT_SINGER_LEN) {map.hot.items.push(new Singer({name: item.Fsinger_name,id: item.Fsinger_mid}))}//key 为ABCDEF。。。。。。const key = item.Findexif (!map[key]) {map[key] = {title: key,items: []}}map[key].items.push(new Singer({name: item.Fsinger_name,id: item.Fsinger_mid}))})// 为了得到有序列表，我们需要处理 maplet ret = []let hot = []for (let key in map) {let val = map[key]if (val.title.match(/[a-zA-Z]/)) {ret.push(val)} else if (val.title === HOT_NAME) {hot.push(val)}}//对字母排序ret.sort((a, b) => {return a.title.charCodeAt(0) - b.title.charCodeAt(0)})return hot.concat(ret)},//做一层映射，映射到mutations...mapMutations({setSinger: 'SET_SINGER'})},components: {ListView}}</script>

nextTic延时函数 es6 FindIndex方法

vuex 状态管理

使用场景

多组件的状态共享
路由间复杂数据传递

mutation-type 用来定义常量，便于项目维护，mutation同步修改数据

export const SET_SINGER = 'SET_SINGER'export const SET_PLAYING_STATE = 'SET_PLAYING_STATE'export const SET_FULL_SCREEN = 'SET_FULL_SCREEN'export const SET_PLAYLIST = 'SET_PLAYLIST'export const SET_SEQUENCE_LIST = 'SET_SEQUENCE_LIST'export const SET_PLAY_MODE = 'SET_PLAY_MODE'export const SET_CURRENT_INDEX = 'SET_CURRENT_INDEX'export const SET_DISC = 'SET_DISC'export const SET_TOP_LIST = 'SET_TOP_LIST'export const SET_SEARCH_HISTORY = 'SET_SEARCH_HISTORY'export const SET_PLAY_HISTORY = 'SET_PLAY_HISTORY'export const SET_FAVORITE_LIST = 'SET_FAVORITE_LIST'

mutations，接收两个参数，state就是state.js定义的变量，另一个就是入参（此参数要改变state里的值）

import * as types from './mutation-types'const mutations = {[types.SET_SINGER](state, singer) {state.singer = singer},[types.SET_PLAYING_STATE](state, flag) {state.playing = flag},[types.SET_FULL_SCREEN](state, flag) {state.fullScreen = flag},[types.SET_PLAYLIST](state, list) {state.playlist = list},[types.SET_SEQUENCE_LIST](state, list) {state.sequenceList = list},[types.SET_PLAY_MODE](state, mode) {state.mode = mode},[types.SET_CURRENT_INDEX](state, index) {state.currentIndex = index},[types.SET_DISC](state, disc) {state.disc = disc},[types.SET_TOP_LIST](state, topList) {state.topList = topList},[types.SET_SEARCH_HISTORY](state, history) {state.searchHistory = history},[types.SET_PLAY_HISTORY](state, history) {state.playHistory = history},[types.SET_FAVORITE_LIST](state, list) {state.favoriteList = list}
}
export default mutations

getters，相当于vuex的计算属性

export const singer = state => state.singerexport const playing = state => state.playingexport const fullScreen = state => state.fullScreenexport const playlist = state => state.playlistexport const sequenceList = state => state.sequenceListexport const mode = state => state.modeexport const currentIndex = state => state.currentIndexexport const currentSong = (state) => {return state.playlist[state.currentIndex] || {}
}export const disc = state => state.discexport const topList = state => state.topListexport const searchHistory = state => state.searchHistoryexport const playHistory = state => state.playHistoryexport const favoriteList = state => state.favoriteList

index.js初始化vuex，启用debug

import Vue from 'vue'
import Vuex from 'vuex'
import * as actions from './actions'
import * as getters from './getters'
import state from './state'
import mutations from './mutations'
import createLogger from 'vuex/dist/logger' //通过他能在控制台看到每次修改的日志Vue.use(Vuex)const debug = process.env.NODE_ENV !== 'production'  //debug模式，是否是通过state来修改数据，只有在run dev 的模式下可行，应该他对性能也有消耗，不建议在正式环境使用export default new Vuex.Store({actions,getters,state,mutations,strict: debug,plugins: debug ? [createLogger()] : []
})

state.js

import {playMode} from 'common/js/config'
import {loadSearch, loadPlay, loadFavorite} from 'common/js/cache'const state = {singer: {},playing: false, //是否播放fullScreen: false, //是否全屏播放playlist: [], //播放列表sequenceList: [], // 顺序列表mode: playMode.sequence, //播放模式currentIndex: -1, //当前播放的那首歌disc: {},topList: {},searchHistory: loadSearch(),playHistory: loadPlay(),favoriteList: loadFavorite()
}export default state

actions 处理异步操作、对mutations的封装（批量处理mutations）

import * as types from './mutation-types'
import {playMode} from 'common/js/config'
import {shuffle} from 'common/js/util'
import {saveSearch, clearSearch, deleteSearch, savePlay, saveFavorite, deleteFavorite} from 'common/js/cache'
//findindex 用来找出 歌曲在当前列表 下的index
function findIndex(list, song) {return list.findIndex((item) => {return item.id === song.id})
}
//选择播放
export const selectPlay = function ({commit, state}, {list, index}) {commit(types.SET_SEQUENCE_LIST, list) //设置值if (state.mode === playMode.random) {let randomList = shuffle(list)commit(types.SET_PLAYLIST, randomList)index = findIndex(randomList, list[index])} else {commit(types.SET_PLAYLIST, list)}commit(types.SET_CURRENT_INDEX, index) //播放索引commit(types.SET_FULL_SCREEN, true) //播放器打开commit(types.SET_PLAYING_STATE, true) //播放状态打开
}
//music-list里面的随机播放全部 事件
export const randomPlay = function ({commit}, {list}) {commit(types.SET_PLAY_MODE, playMode.random)commit(types.SET_SEQUENCE_LIST, list)let randomList = shuffle(list)commit(types.SET_PLAYLIST, randomList)commit(types.SET_CURRENT_INDEX, 0)commit(types.SET_FULL_SCREEN, true)commit(types.SET_PLAYING_STATE, true)
}export const insertSong = function ({commit, state}, song) {let playlist = state.playlist.slice()let sequenceList = state.sequenceList.slice()let currentIndex = state.currentIndex// 记录当前歌曲let currentSong = playlist[currentIndex]// 查找当前列表中是否有待插入的歌曲并返回其索引let fpIndex = findIndex(playlist, song)// 因为是插入歌曲，所以索引+1currentIndex++// 插入这首歌到当前索引位置playlist.splice(currentIndex, 0, song)// 如果已经包含了这首歌if (fpIndex > -1) {// 如果当前插入的序号大于列表中的序号if (currentIndex > fpIndex) {playlist.splice(fpIndex, 1)currentIndex--} else {playlist.splice(fpIndex + 1, 1)}}let currentSIndex = findIndex(sequenceList, currentSong) + 1let fsIndex = findIndex(sequenceList, song)sequenceList.splice(currentSIndex, 0, song)if (fsIndex > -1) {if (currentSIndex > fsIndex) {sequenceList.splice(fsIndex, 1)} else {sequenceList.splice(fsIndex + 1, 1)}}commit(types.SET_PLAYLIST, playlist)commit(types.SET_SEQUENCE_LIST, sequenceList)commit(types.SET_CURRENT_INDEX, currentIndex)commit(types.SET_FULL_SCREEN, true)commit(types.SET_PLAYING_STATE, true)
}export const saveSearchHistory = function ({commit}, query) {commit(types.SET_SEARCH_HISTORY, saveSearch(query))
}export const deleteSearchHistory = function ({commit}, query) {commit(types.SET_SEARCH_HISTORY, deleteSearch(query))
}export const clearSearchHistory = function ({commit}) {commit(types.SET_SEARCH_HISTORY, clearSearch())
}export const deleteSong = function ({commit, state}, song) {let playlist = state.playlist.slice()let sequenceList = state.sequenceList.slice()let currentIndex = state.currentIndexlet pIndex = findIndex(playlist, song)playlist.splice(pIndex, 1)let sIndex = findIndex(sequenceList, song)sequenceList.splice(sIndex, 1)if (currentIndex > pIndex || currentIndex === playlist.length) {currentIndex--}commit(types.SET_PLAYLIST, playlist)commit(types.SET_SEQUENCE_LIST, sequenceList)commit(types.SET_CURRENT_INDEX, currentIndex)if (!playlist.length) {commit(types.SET_PLAYING_STATE, false)} else {commit(types.SET_PLAYING_STATE, true)}
}export const deleteSongList = function ({commit}) {commit(types.SET_CURRENT_INDEX, -1)commit(types.SET_PLAYLIST, [])commit(types.SET_SEQUENCE_LIST, [])commit(types.SET_PLAYING_STATE, false)
}export const savePlayHistory = function ({commit}, song) {commit(types.SET_PLAY_HISTORY, savePlay(song))
}export const saveFavoriteList = function ({commit}, song) {commit(types.SET_FAVORITE_LIST, saveFavorite(song))
}export const deleteFavoriteList = function ({commit}, song) {commit(types.SET_FAVORITE_LIST, deleteFavorite(song))
}

用vuex在路由间传递复杂数据

歌手页面完成数据的设置，在歌手详情页面开始获取数据
代码注释：获取单个数据字段，刷新的边界处理

歌手详情页，为了组件重用抽出来一个music-list.vue,在此基础又抽出来一个song-list.vue，有两层组件

song类

将乱而散的数据整理成我们想要的数据

import {getLyric} from 'api/song'
import {ERR_OK} from 'api/config'
import {Base64} from 'js-base64'export default class Song {constructor({id, mid, singer, name, album, duration, image, url}) {this.id = idthis.mid = midthis.singer = singerthis.name = namethis.album = albumthis.duration = durationthis.image = imagethis.url = url}getLyric() {if (this.lyric) {return Promise.resolve(this.lyric)}return new Promise((resolve, reject) => {getLyric(this.mid).then((res) => {if (res.retcode === ERR_OK) {this.lyric = Base64.decode(res.lyric)resolve(this.lyric)} else {reject('no lyric')}})})}
}//工厂函数，调用song类
export function createSong(musicData) {return new Song({id: musicData.songid,mid: musicData.songmid,singer: filterSinger(musicData.singer),name: musicData.songname,album: musicData.albumname,duration: musicData.interval,image: `https://y.gtimg.cn/music/photo_new/T002R300x300M000${musicData.albummid}.jpg?max_age=2592000`,url: `http://ws.stream.qqmusic.qq.com/${musicData.songid}.m4a?fromtag=46`})
}
//这个方法是将name数组按照/的方式展示，两个以上有效
function filterSinger(singer) {let ret = []if (!singer) {return ''}singer.forEach((s) => {ret.push(s.name)})return ret.join('/')
}

歌手详情页，transition动画、song类的应用

<template><transition name="slide"><music-list :title="title" :bg-image="bgImage" :songs="songs"></music-list></transition>
</template><script type="text/ecmascript-6">import MusicList from 'components/music-list/music-list'import {getSingerDetail} from 'api/singer'import {ERR_OK} from 'api/config'import {createSong} from 'common/js/song'import {mapGetters} from 'vuex'  //通过mapgetters语法糖export default {computed: {//只需要数据结构的某一个字段title() {return this.singer.name},//只需要数据结构的某一个字段bgImage() {return this.singer.avatar},//位于计算属性，获取vuex里面的数据...mapGetters(['singer'])},data() {return {songs: []}},created() {this._getDetail()},methods: {//如果用户在当前页面刷新，返回上一个路由，这是一个边界问题_getDetail() {if (!this.singer.id) {this.$router.push('/singer')return}//请求数据getSingerDetail(this.singer.id).then((res) => {if (res.code === ERR_OK) {this.songs = this._normalizeSongs(res.data.list)}})},_normalizeSongs(list) {let ret = []list.forEach((item) => {let {musicData} = itemif (musicData.songid && musicData.albummid) {ret.push(createSong(musicData))}})return ret}},components: {MusicList}}
</script>//只需要数据结构的某一个字段
<style scoped lang="stylus" rel="stylesheet/stylus">.slide-enter-active, .slide-leave-activetransition: all 0.3s.slide-enter, .slide-leave-totransform: translate3d(100%, 0, 0)x轴  , y轴  ,z轴
</style>

歌手详情，子组件music-list

<template><div class="music-list"><div class="back" @click="back"><i class="icon-back"></i></div><h1 class="title" v-html="title"></h1>//歌手头像背景，关注背景图的设置，以及样式，传说中的10:7写法？？？？？？？<div class="bg-image" :style="bgStyle" ref="bgImage"><div class="play-wrapper"><div ref="playBtn" v-show="songs.length>0" class="play" @click="random"><i class="icon-play"></i><span class="text">随机播放全部</span></div></div>//用来控制模糊层，但是兼容不好，pc、和部分安卓看不到效果，只有iOS可以看到<div class="filter" ref="filter"></div></div>//用于歌曲列表向上滚动，来做遮挡层<div class="bg-layer" ref="layer"></div><scroll :data="songs" @scroll="scroll":listen-scroll="listenScroll" :probe-type="probeType" class="list" ref="list"><div class="song-list-wrapper"><song-list :songs="songs" :rank="rank" @select="selectItem"></song-list></div><div v-show="!songs.length" class="loading-container"><loading></loading></div></scroll></div>
</template><script type="text/ecmascript-6">import Scroll from 'base/scroll/scroll'import Loading from 'base/loading/loading'import SongList from 'base/song-list/song-list'import {prefixStyle} from 'common/js/dom'import {playlistMixin} from 'common/js/mixin'import {mapActions} from 'vuex'  //语法糖用于获取actionsconst RESERVED_HEIGHT = 40 //重制高度，向上滚动的时候预留的高度//下面是用到的两个属性，拼接浏览器前缀做浏览器兼容const transform = prefixStyle('transform') const backdrop = prefixStyle('backdrop-filter')export default {mixins: [playlistMixin],props: {bgImage: {type: String,default: ''},songs: {type: Array,default: []},title: {type: String,default: ''},rank: {type: Boolean,default: false}},data() {return {scrollY: 0}},computed: {//计算属性设置背景bgStyle() {return `background-image:url(${this.bgImage})`}},created() {this.probeType = 3this.listenScroll = true},mounted() {this.imageHeight = this.$refs.bgImage.clientHeightthis.minTransalteY = -this.imageHeight + RESERVED_HEIGHTthis.$refs.list.$el.style.top = `${this.imageHeight}px`},methods: {handlePlaylist(playlist) {const bottom = playlist.length > 0 ? '60px' : ''this.$refs.list.$el.style.bottom = bottomthis.$refs.list.refresh()},scroll(pos) {this.scrollY = pos.y},back() {this.$router.back()},//当前点击的歌曲selectItem(item, index) {this.selectPlay({list: this.songs,index})},//随机播放全部歌曲random() {this.randomPlay({list: this.songs})},//一般会将这个方法放到methods对象的末尾...mapActions(['selectPlay','randomPlay'])},watch: {scrollY(newVal) {let translateY = Math.max(this.minTransalteY, newVal) //最大不超过this.minTransalteYlet scale = 1let zIndex = 0let blur = 0const percent = Math.abs(newVal / this.imageHeight) //获取绝对值if (newVal > 0) { //向上滚动的时候scale = 1 + percentzIndex = 10} else {blur = Math.min(20, percent * 20) //最小是20}this.$refs.layer.style[transform] = `translate3d(0,${translateY}px,0)`this.$refs.filter.style[backdrop] = `blur(${blur}px)`if (newVal < this.minTransalteY) {  //向上滚动的时候zIndex = 10this.$refs.bgImage.style.paddingTop = 0this.$refs.bgImage.style.height = `${RESERVED_HEIGHT}px`this.$refs.playBtn.style.display = 'none'} else { //向下滚动的时候再恢复默认this.$refs.bgImage.style.paddingTop = '70%'this.$refs.bgImage.style.height = 0this.$refs.playBtn.style.display = ''}this.$refs.bgImage.style[transform] = `scale(${scale})`this.$refs.bgImage.style.zIndex = zIndex}},components: {Scroll,Loading,SongList}}
</script><style scoped lang="stylus" rel="stylesheet/stylus">@import "~common/stylus/variable"@import "~common/stylus/mixin".music-listposition: fixedz-index: 100top: 0left: 0bottom: 0right: 0background: $color-background.backposition absolutetop: 0left: 6pxz-index: 50.icon-backdisplay: blockpadding: 10pxfont-size: $font-size-large-xcolor: $color-theme.titleposition: absolutetop: 0left: 10%z-index: 40width: 80%no-wrap()text-align: centerline-height: 40pxfont-size: $font-size-largecolor: $color-text.bg-imageposition: relativewidth: 100%height: 0padding-top: 70%transform-origin: topbackground-size: cover.play-wrapperposition: absolutebottom: 20pxz-index: 50width: 100%.playbox-sizing: border-boxwidth: 135pxpadding: 7px 0margin: 0 autotext-align: centerborder: 1px solid $color-themecolor: $color-themeborder-radius: 100pxfont-size: 0.icon-playdisplay: inline-blockvertical-align: middlemargin-right: 6pxfont-size: $font-size-medium-x.textdisplay: inline-blockvertical-align: middlefont-size: $font-size-small.filterposition: absolutetop: 0left: 0width: 100%height: 100%background: rgba(7, 17, 27, 0.4).bg-layerposition: relativeheight: 100%background: $color-background.listposition: fixedtop: 0bottom: 0width: 100%background: $color-background.song-list-wrapperpadding: 20px 30px.loading-containerposition: absolutewidth: 100%top: 50%transform: translateY(-50%)
</style>

song-list子组件

<template><div class="song-list"><ul><li @click="selectItem(song, index)" class="item" v-for="(song, index) in songs"><div class="rank" v-show="rank"><span :class="getRankCls(index)" v-text="getRankText(index)"></span></div><div class="content"><h2 class="name">{{song.name}}</h2><p class="desc">{{getDesc(song)}}</p></div></li></ul></div>
</template><script type="text/ecmascript-6">export default {props: {songs: {type: Array,default: []},rank: {type: Boolean,default: false}},methods: {//向父组件传递事件selectItem(item, index) {this.$emit('select', item, index)},getDesc(song) {return `${song.singer}·${song.album}`},getRankCls(index) {if (index <= 2) {return `icon icon${index}`} else {return 'text'}},getRankText(index) {if (index > 2) {return index + 1}}}}
</script><style scoped lang="stylus" rel="stylesheet/stylus">@import "~common/stylus/variable"@import "~common/stylus/mixin".song-list.itemdisplay: flexalign-items: centerbox-sizing: border-boxheight: 64pxfont-size: $font-size-medium.rankflex: 0 0 25pxwidth: 25pxmargin-right: 30pxtext-align: center.icondisplay: inline-blockwidth: 25pxheight: 24pxbackground-size: 25px 24px&.icon0bg-image('first')&.icon1bg-image('second')&.icon2bg-image('third').textcolor: $color-themefont-size: $font-size-large.contentflex: 1line-height: 20pxoverflow: hidden.nameno-wrap()color: $color-text.descno-wrap()margin-top: 4pxcolor: $color-text-d
</style>

随机播放技术实现随机数组

//随机数
function getRandomInt(min, max) {return Math.floor(Math.random() * (max - min + 1) + min)
}
//把数组打乱
export function shuffle(arr) {let _arr = arr.slice()for (let i = 0; i < _arr.length; i++) {let j = getRandomInt(0, i)let t = _arr[i]_arr[i] = _arr[j]_arr[j] = t}return _arr
}export function debounce(func, delay) {let timerreturn function (...args) {if (timer) {clearTimeout(timer)}timer = setTimeout(() => {func.apply(this, args)}, delay)}
}

时间戳转分秒补零方法

 //转换时间format(interval) {interval = interval | 0 //时间戳 向下取整const minute = interval / 60 | 0  //向下取整const second = this._pad(interval % 60)return `${minute}:${second}`},//时间补零 n相当于补充的字符串的长度_pad(num, n = 2) {let len = num.toString().length //获取字符串的长度while (len < n) {num = '0' + numlen++}return num},

播放器内置组件 player.vue，通过actions的方法--selectPlay,在此组件拿到currentSong，这里再重点说一下mutations和它的type要做到命名一致，nutations本质就是函数，第一个参数是state第二个参数是要修改的对象值

条形进度条应用到全屏播放

clientWidth 为content+padding的值

<template><div class="progress-bar" ref="progressBar" @click="progressClick"><div class="bar-inner"><!-- 背景 --><div class="progress" ref="progress"></div><!-- 小圆点 --><div class="progress-btn-wrapper" ref="progressBtn"@touchstart.prevent="progressTouchStart"@touchmove.prevent="progressTouchMove"@touchend="progressTouchEnd"><div class="progress-btn"></div></div></div></div>
</template><script type="text/ecmascript-6">import {prefixStyle} from 'common/js/dom'const progressBtnWidth = 16const transform = prefixStyle('transform')export default {props: {percent: {type: Number,default: 0}},created() {this.touch = {}  //创建一个touch对象},methods: {progressTouchStart(e) {//创建一个标志，意思它已经初始化完this.touch.initiated = true//手指的位置this.touch.startX = e.touches[0].pageX//当前滚动，滚动条的位置this.touch.left = this.$refs.progress.clientWidth},progressTouchMove(e) {//如果初始化完则什么都不做if (!this.touch.initiated) {return}const deltaX = e.touches[0].pageX - this.touch.startX //计算差值 //max 的0  意思不能小于0 、、、、min，不能超过整个滚动条的宽度const offsetWidth = Math.min(this.$refs.progressBar.clientWidth - progressBtnWidth, Math.max(0, this.touch.left + deltaX)) this._offset(offsetWidth)},progressTouchEnd() {this.touch.initiated = false//滚动完后要给父组件派发一个事件this._triggerPercent()},//点击改变歌曲播放进度progressClick(e) {const rect = this.$refs.progressBar.getBoundingClientRect() //是一个获取距离的方法 也就是当前内容距离屏幕的左右间距const offsetWidth = e.pageX - rect.leftthis._offset(offsetWidth)// 这里当我们点击 progressBtn 的时候，e.offsetX 获取不对// this._offset(e.offsetX)this._triggerPercent()},_triggerPercent() {const barWidth = this.$refs.progressBar.clientWidth - progressBtnWidthconst percent = this.$refs.progress.clientWidth / barWidththis.$emit('percentChange', percent)},//偏移方法_offset(offsetWidth) {this.$refs.progress.style.width = `${offsetWidth}px`  //获取进度条的位置，距离左右的距离this.$refs.progressBtn.style[transform] = `translate3d(${offsetWidth}px,0,0)`  //小球的偏移}},watch: {//它是不断改变的percent(newPercent) {//大于0 而且不是在拖动的状态下，拖动的时候不要改变if (newPercent >= 0 && !this.touch.initiated) {const barWidth = this.$refs.progressBar.clientWidth - progressBtnWidth  //进度条的总宽度 内容-按钮的宽度const offsetWidth = newPercent * barWidth //应该偏移的宽度this._offset(offsetWidth)}}}}
</script><style scoped lang="stylus" rel="stylesheet/stylus">@import "~common/stylus/variable".progress-barheight: 30px.bar-innerposition: relativetop: 13pxheight: 4pxbackground: rgba(0, 0, 0, 0.3).progressposition: absoluteheight: 100%background: $color-theme.progress-btn-wrapperposition: absoluteleft: -8pxtop: -13pxwidth: 30pxheight: 30px.progress-btnposition: relativetop: 7pxleft: 7pxbox-sizing: border-boxwidth: 16pxheight: 16pxborder: 3px solid $color-textborder-radius: 50%background: $color-theme
</style>

圆形进度条用到SVG

<template><div class="progress-circle"><!-- viewBox 视口位置 width、height 是显示到页面的宽高 --><svg :width="radius" :height="radius" viewBox="0 0 100 100" version="1.1" xmlns="http://www.w3.org/2000/svg"><!-- 内层圆圈 r半径 cx\yx为圆心的坐标，说明这个圆是100的宽度 --><circle class="progress-background" r="50" cx="50" cy="50" fill="transparent"/><!-- 外层圆圈 stroke-dasharray描边 stroke-dashoffset偏移量--><circle class="progress-bar" r="50" cx="50" cy="50" fill="transparent" :stroke-dasharray="dashArray":stroke-dashoffset="dashOffset"/></svg><slot></slot></div>
</template><script type="text/ecmascript-6">export default {props: {radius: {type: Number,default: 100},percent: {type: Number,default: 0}},data() {return {dashArray: Math.PI * 100}},computed: {dashOffset() {return (1 - this.percent) * this.dashArray}}}
</script><style scoped lang="stylus" rel="stylesheet/stylus">@import "~common/stylus/variable".progress-circleposition: relativecirclestroke-width: 8pxtransform-origin: center&.progress-backgroundtransform: scale(0.9)stroke: $color-theme-d&.progress-bartransform: scale(0.9) rotate(-90deg)stroke: $color-theme
</style>

播放器内核

<template><div class="player" v-show="playlist.length>0"><!-- 下面用到了动画的js钩子，用它来实现左下到右上的飞跃 --><transition name="normal"@enter="enter" @after-enter="afterEnter" @leave="leave"@after-leave="afterLeave"><!-- 全屏播放器 --><div class="normal-player" v-show="fullScreen"><!-- 背景虚化处理 --><div class="background"><img width="100%" height="100%" :src="currentSong.image"></div><div class="top"><!-- 收起按钮 --><div class="back" @click="back"><i class="icon-back"></i></div><!-- 标题/作者 --><h1 class="title" v-html="currentSong.name"></h1><h2 class="subtitle" v-html="currentSong.singer"></h2></div><div class="middle"@touchstart.prevent="middleTouchStart"@touchmove.prevent="middleTouchMove"@touchend="middleTouchEnd"><!-- 播放器左侧 --><div class="middle-l" ref="middleL"><div class="cd-wrapper" ref="cdWrapper"><!-- 当前播放歌曲的海报 --><div class="cd" :class="cdCls"><img class="image" :src="currentSong.image"></div></div><div class="playing-lyric-wrapper"><div class="playing-lyric">{{playingLyric}}</div></div></div><!-- 播放器右侧 歌词列表 --><scroll class="middle-r" ref="lyricList" :data="currentLyric && currentLyric.lines"><div class="lyric-wrapper"><div v-if="currentLyric"><p ref="lyricLine"class="text":class="{'current': currentLineNum ===index}"v-for="(line,index) in currentLyric.lines">{{line.txt}}</p></div></div></scroll></div><div class="bottom"><div class="dot-wrapper"><span class="dot" :class="{'active':currentShow==='cd'}"></span><span class="dot" :class="{'active':currentShow==='lyric'}"></span></div><!-- 条形进度条的大盒子 --><div class="progress-wrapper"><!-- 歌曲开始播放时间 --><span class="time time-l">{{format(currentTime)}}</span><!-- 条形进度条 --><div class="progress-bar-wrapper"><progress-bar :percent="percent" @percentChange="onProgressBarChange"></progress-bar></div><!-- 歌曲结束时间 --><span class="time time-r">{{format(currentSong.duration)}}</span></div><div class="operators"><!-- 歌曲播放模式 --><div class="icon i-left" @click="changeMode"><i :class="iconMode"></i></div><!-- 上一首 --><div class="icon i-left" :class="disableCls"><i @click="prev" class="icon-prev"></i></div><!-- 播放与暂停 --><div class="icon i-center" :class="disableCls"><i @click="togglePlaying" :class="playIcon"></i></div><!-- 下一首 --><div class="icon i-right" :class="disableCls"><i @click="next" class="icon-next"></i></div><!-- 收藏按钮 --><div class="icon i-right"><i @click="toggleFavorite(currentSong)" class="icon" :class="getFavoriteIcon(currentSong)"></i></div></div></div></div></transition><!-- 收起后的迷你播放器 --><transition name="mini"><div class="mini-player" v-show="!fullScreen" @click="open"><div class="icon"><img :class="cdCls" width="40" height="40" :src="currentSong.image"></div><div class="text"><h2 class="name" v-html="currentSong.name"></h2><p class="desc" v-html="currentSong.singer"></p></div><!-- 圆形进度条 用到svg --><div class="control"><progress-circle :radius="radius" :percent="percent"><i @click.stop="togglePlaying" class="icon-mini" :class="miniIcon"></i></progress-circle></div><div class="control" @click.stop="showPlaylist"><i class="icon-playlist"></i></div></div></transition><playlist ref="playlist"></playlist><!-- 音频播放器 核心 --><audio ref="audio" :src="currentSong.url" @play="ready" @error="error" @timeupdate="updateTime"@ended="end"></audio></div>
</template><script type="text/ecmascript-6">import {mapGetters, mapMutations, mapActions} from 'vuex'import animations from 'create-keyframe-animation' //用到这个动画库import {prefixStyle} from 'common/js/dom'import ProgressBar from 'base/progress-bar/progress-bar'import ProgressCircle from 'base/progress-circle/progress-circle'import {playMode} from 'common/js/config'import Lyric from 'lyric-parser'import Scroll from 'base/scroll/scroll'import {playerMixin} from 'common/js/mixin'import Playlist from 'components/playlist/playlist'//下面的对象是 'common/js/config' 里面的内容
// export const playMode = {//   sequence: 0, //顺序播放
//   loop: 1, //循环播放
//   random: 2 //随机播放
// }const transform = prefixStyle('transform')const transitionDuration = prefixStyle('transitionDuration')export default {mixins: [playerMixin],data() {return {songReady: false, //控制播放器，歌曲加载完后再走下面的逻辑currentTime: 0, //当前歌曲播放的时间radius: 32,currentLyric: null,currentLineNum: 0,currentShow: 'cd',playingLyric: ''}},computed: {cdCls() {return this.playing ? 'play' : 'play pause'},//字体图标的应用playIcon() {return this.playing ? 'icon-pause' : 'icon-play'},//字体图标的应用miniIcon() {return this.playing ? 'icon-pause-mini' : 'icon-play-mini'},//添加歌曲不能播放的状态样式disableCls() {return this.songReady ? '' : 'disable'},//歌曲播放的比例percent() {return this.currentTime / this.currentSong.duration},...mapGetters(['currentIndex','fullScreen','playing'])},created() {this.touch = {}},methods: {back() {this.setFullScreen(false)},open() {this.setFullScreen(true)},// el 是元素、done执行会跳到afterEnterenter(el, done) {const {x, y, scale} = this._getPosAndScale()//从零先跳到那个初始化的位置，60的时候放大，100的时候恢复正常let animation = {0: {transform: `translate3d(${x}px,${y}px,0) scale(${scale})`},60: {transform: `translate3d(0,0,0) scale(1.1)`},100: {transform: `translate3d(0,0,0) scale(1)`}}animations.registerAnimation({name: 'move',animation,presets: {duration: 400,easing: 'linear'}})// 把动画追加到制定元素animations.runAnimation(this.$refs.cdWrapper, 'move', done)},afterEnter() {animations.unregisterAnimation('move')this.$refs.cdWrapper.style.animation = ''},// el 是元素、done执行会跳到afterLeaaveleave(el, done) {this.$refs.cdWrapper.style.transition = 'all 0.4s'const {x, y, scale} = this._getPosAndScale()this.$refs.cdWrapper.style[transform] = `translate3d(${x}px,${y}px,0) scale(${scale})`this.$refs.cdWrapper.addEventListener('transitionend', done)},afterLeave() {this.$refs.cdWrapper.style.transition = ''this.$refs.cdWrapper.style[transform] = ''},// 切换歌曲播放与暂停togglePlaying() {if (!this.songReady) {return}this.setPlayingState(!this.playing)if (this.currentLyric) {this.currentLyric.togglePlay()}},//歌曲播放结束事件end() {//如果是单曲循环，播放结束后再次播放if (this.mode === playMode.loop) {this.loop()} else {this.next()}},loop() {this.$refs.audio.currentTime = 0this.$refs.audio.play()this.setPlayingState(true)if (this.currentLyric) {this.currentLyric.seek(0)}},// 切换下一首歌曲next() {//歌曲没有加载完if (!this.songReady) {return}if (this.playlist.length === 1) {this.loop()return} else {let index = this.currentIndex + 1 //下一首歌，所以要加一//如果到底类，就重置为0if (index === this.playlist.length) {index = 0}//设置vuex的indexthis.setCurrentIndex(index)//如果是暂停状态下，切换，就调取方法改变它的值 if (!this.playing) {this.togglePlaying()}}this.songReady = false},prev() {//歌曲没有加载完if (!this.songReady) {return}if (this.playlist.length === 1) {this.loop()return} else {let index = this.currentIndex - 1//如果到头，就换成最后一首歌if (index === -1) {index = this.playlist.length - 1}this.setCurrentIndex(index)//如果是暂停状态下，切换，就调取方法改变它的值 if (!this.playing) {this.togglePlaying()}}this.songReady = false},//歌曲加载完事件ready() {this.songReady = truethis.savePlayHistory(this.currentSong)},error() {this.songReady = true},//获取歌曲当前播放的时间长度updateTime(e) {this.currentTime = e.target.currentTime},//转换时间format(interval) {interval = interval | 0 //时间戳 向下取整const minute = interval / 60 | 0  //向下取整const second = this._pad(interval % 60)return `${minute}:${second}`},//监听子组件返回的数值，改变播放器的进度onProgressBarChange(percent) {const currentTime = this.currentSong.duration * percentthis.$refs.audio.currentTime = currentTime//如果当前状态没有播放，就去播放歌曲if (!this.playing) {this.togglePlaying()}if (this.currentLyric) {this.currentLyric.seek(currentTime * 1000)}},getLyric() {this.currentSong.getLyric().then((lyric) => {if (this.currentSong.lyric !== lyric) {return}this.currentLyric = new Lyric(lyric, this.handleLyric)if (this.playing) {this.currentLyric.play()}}).catch(() => {this.currentLyric = nullthis.playingLyric = ''this.currentLineNum = 0})},handleLyric({lineNum, txt}) {this.currentLineNum = lineNumif (lineNum > 5) {let lineEl = this.$refs.lyricLine[lineNum - 5]this.$refs.lyricList.scrollToElement(lineEl, 1000)} else {this.$refs.lyricList.scrollTo(0, 0, 1000)}this.playingLyric = txt},showPlaylist() {this.$refs.playlist.show()},middleTouchStart(e) {this.touch.initiated = true// 用来判断是否是一次移动this.touch.moved = falseconst touch = e.touches[0]this.touch.startX = touch.pageXthis.touch.startY = touch.pageY},middleTouchMove(e) {if (!this.touch.initiated) {return}const touch = e.touches[0]const deltaX = touch.pageX - this.touch.startXconst deltaY = touch.pageY - this.touch.startYif (Math.abs(deltaY) > Math.abs(deltaX)) {return}if (!this.touch.moved) {this.touch.moved = true}const left = this.currentShow === 'cd' ? 0 : -window.innerWidthconst offsetWidth = Math.min(0, Math.max(-window.innerWidth, left + deltaX))this.touch.percent = Math.abs(offsetWidth / window.innerWidth)this.$refs.lyricList.$el.style[transform] = `translate3d(${offsetWidth}px,0,0)`this.$refs.lyricList.$el.style[transitionDuration] = 0this.$refs.middleL.style.opacity = 1 - this.touch.percentthis.$refs.middleL.style[transitionDuration] = 0},middleTouchEnd() {if (!this.touch.moved) {return}let offsetWidthlet opacityif (this.currentShow === 'cd') {if (this.touch.percent > 0.1) {offsetWidth = -window.innerWidthopacity = 0this.currentShow = 'lyric'} else {offsetWidth = 0opacity = 1}} else {if (this.touch.percent < 0.9) {offsetWidth = 0this.currentShow = 'cd'opacity = 1} else {offsetWidth = -window.innerWidthopacity = 0}}const time = 300this.$refs.lyricList.$el.style[transform] = `translate3d(${offsetWidth}px,0,0)`this.$refs.lyricList.$el.style[transitionDuration] = `${time}ms`this.$refs.middleL.style.opacity = opacitythis.$refs.middleL.style[transitionDuration] = `${time}ms`this.touch.initiated = false},//时间补零 n相当于补充的字符串的长度_pad(num, n = 2) {let len = num.toString().length //获取字符串的长度while (len < n) {num = '0' + numlen++}return num},_getPosAndScale() {const targetWidth = 40 //目标宽度，小圆圈的宽度const paddingLeft = 40 //目标宽度，小圆圈的左边距const paddingBottom = 30 //目标宽度，小圆圈的下边距const paddingTop = 80 //大唱片到页面顶部的距离const width = window.innerWidth * 0.8 //大唱片的宽度，因为设置的是80%const scale = targetWidth / width //初开始的缩放const x = -(window.innerWidth / 2 - paddingLeft) //初始的x轴，从左下到右上所以是负值const y = window.innerHeight - paddingTop - width / 2 - paddingBottom //初始化 y轴  2分支1的宽度return {x,y,scale}},...mapMutations({setFullScreen: 'SET_FULL_SCREEN'}),...mapActions(['savePlayHistory'])},watch: {currentSong(newSong, oldSong) {if (!newSong.id) {return}//发现ID没变 就什么都不做，在切换模式的时候用到if (newSong.id === oldSong.id) {return}if (this.currentLyric) {this.currentLyric.stop()this.currentTime = 0this.playingLyric = ''this.currentLineNum = 0}// 函数防抖的处理clearTimeout(this.timer)this.timer = setTimeout(() => {this.$refs.audio.play()this.getLyric()}, 1000)},//控制暂停和播放playing(newPlaying) {//先缓存一下引用const audio = this.$refs.audiothis.$nextTick(() => {newPlaying ? audio.play() : audio.pause()})},fullScreen(newVal) {if (newVal) {setTimeout(() => {this.$refs.lyricList.refresh()}, 20)}}},components: {ProgressBar,ProgressCircle,Scroll,Playlist}}
</script><style scoped lang="stylus" rel="stylesheet/stylus">@import "~common/stylus/variable"@import "~common/stylus/mixin".player.normal-playerposition: fixedleft: 0right: 0top: 0bottom: 0z-index: 150background: $color-background.backgroundposition: absoluteleft: 0top: 0width: 100%height: 100%z-index: -1opacity: 0.6filter: blur(20px).topposition: relativemargin-bottom: 25px.backposition absolutetop: 0left: 6pxz-index: 50.icon-backdisplay: blockpadding: 9pxfont-size: $font-size-large-xcolor: $color-themetransform: rotate(-90deg).titlewidth: 70%margin: 0 autoline-height: 40pxtext-align: centerno-wrap()font-size: $font-size-largecolor: $color-text.subtitleline-height: 20pxtext-align: centerfont-size: $font-size-mediumcolor: $color-text.middleposition: fixedwidth: 100%top: 80pxbottom: 170pxwhite-space: nowrapfont-size: 0.middle-ldisplay: inline-blockvertical-align: topposition: relativewidth: 100%height: 0padding-top: 80%.cd-wrapperposition: absoluteleft: 10%top: 0width: 80%height: 100%.cdwidth: 100%height: 100%box-sizing: border-boxborder: 10px solid rgba(255, 255, 255, 0.1)border-radius: 50%&.playanimation: rotate 20s linear infinite&.pauseanimation-play-state: paused.imageposition: absoluteleft: 0top: 0width: 100%height: 100%border-radius: 50%.playing-lyric-wrapperwidth: 80%margin: 30px auto 0 autooverflow: hiddentext-align: center.playing-lyricheight: 20pxline-height: 20pxfont-size: $font-size-mediumcolor: $color-text-l.middle-rdisplay: inline-blockvertical-align: topwidth: 100%height: 100%overflow: hidden.lyric-wrapperwidth: 80%margin: 0 autooverflow: hiddentext-align: center.textline-height: 32pxcolor: $color-text-lfont-size: $font-size-medium&.currentcolor: $color-text.bottomposition: absolutebottom: 50pxwidth: 100%.dot-wrappertext-align: centerfont-size: 0.dotdisplay: inline-blockvertical-align: middlemargin: 0 4pxwidth: 8pxheight: 8pxborder-radius: 50%background: $color-text-l&.activewidth: 20pxborder-radius: 5pxbackground: $color-text-ll.progress-wrapperdisplay: flexalign-items: centerwidth: 80%margin: 0px autopadding: 10px 0.timecolor: $color-textfont-size: $font-size-smallflex: 0 0 30pxline-height: 30pxwidth: 30px&.time-ltext-align: left&.time-rtext-align: right.progress-bar-wrapperflex: 1.operatorsdisplay: flexalign-items: center.iconflex: 1color: $color-theme&.disablecolor: $color-theme-difont-size: 30px.i-lefttext-align: right.i-centerpadding: 0 20pxtext-align: centerifont-size: 40px.i-righttext-align: left.icon-favoritecolor: $color-sub-theme&.normal-enter-active, &.normal-leave-activetransition: all 0.4s.top, .bottomtransition: all 0.4s cubic-bezier(0.86, 0.18, 0.82, 1.32)&.normal-enter, &.normal-leave-toopacity: 0.toptransform: translate3d(0, -100px, 0).bottomtransform: translate3d(0, 100px, 0).mini-playerdisplay: flexalign-items: centerposition: fixedleft: 0bottom: 0z-index: 180width: 100%height: 60pxbackground: $color-highlight-background&.mini-enter-active, &.mini-leave-activetransition: all 0.4s&.mini-enter, &.mini-leave-toopacity: 0.iconflex: 0 0 40pxwidth: 40pxpadding: 0 10px 0 20pximgborder-radius: 50%&.playanimation: rotate 10s linear infinite&.pauseanimation-play-state: paused.textdisplay: flexflex-direction: columnjustify-content: centerflex: 1line-height: 20pxoverflow: hidden.namemargin-bottom: 2pxno-wrap()font-size: $font-size-mediumcolor: $color-text.descno-wrap()font-size: $font-size-smallcolor: $color-text-d.controlflex: 0 0 30pxwidth: 30pxpadding: 0 10px.icon-play-mini, .icon-pause-mini, .icon-playlistfont-size: 30pxcolor: $color-theme-d.icon-minifont-size: 32pxposition: absoluteleft: 0top: 0@keyframes rotate0%transform: rotate(0)100%transform: rotate(360deg)
</style>

一级页面向二级页面传参数

首先在路由中定义一个二级，path就是id，再回到推荐页面加一个routerview以及点击事件，到此完成第一步。见下面的部分代码

{path: '/recommend',component: Recommend,children: [{path: ':id',component: Disc}]},

<div class="recommend-list"><h1 class="list-title">热门歌单推荐</h1><ul><li @click="selectItem(item)" v-for="item in discList" class="item"><div class="icon"><img width="60" height="60" v-lazy="item.imgurl"></div><div class="text"><h2 class="name" v-html="item.creator.name"></h2><p class="desc" v-html="item.dissname"></p></div></li></ul></div></div><div class="loading-container" v-show="!discList.length"><loading></loading></div></scroll><router-view></router-view></div>
</template>

selectItem(item) {this.$router.push({path: `/recommend/${item.dissid}`})this.setDisc(item)},

正则整理数据结构

看下面的数据，其实请求接口的时候设置了json但是还是返回了，jsonp的格式怎么办？

if (typeof ret === 'string') {//以字母开始 +表示一位或多位 \( \) 转义小括号 ()用它来分组 {} 表示下面的{}符号 \(\)表示不是小括号的任意字符 +表示一个或者多个var reg = /^\w+\(({[^\(\)]+})\)$/var matches = response.data.match(reg)if (matches) {ret = JSON.parse(matches[1])}}

打包后如何运行dist目录

1、npm run build 是本地打包 2、新建prod.server.js 最后运行 node prod.server.js 就能把项目跑起来

var express = require('express')
var config = require('./config/index')
var axios = require('axios')var port = process.env.PORT || config.build.portvar app = express()var apiRoutes = express.Router()apiRoutes.get('/getDiscList', function (req, res) {var url = 'https://c.y.qq.com/splcloud/fcgi-bin/fcg_get_diss_by_tag.fcg'axios.get(url, {headers: {referer: 'https://c.y.qq.com/',host: 'c.y.qq.com'},params: req.query}).then((response) => {res.json(response.data)}).catch((e) => {console.log(e)})
})apiRoutes.get('/lyric', function (req, res) {var url = 'https://c.y.qq.com/lyric/fcgi-bin/fcg_query_lyric_new.fcg'axios.get(url, {headers: {referer: 'https://c.y.qq.com/',host: 'c.y.qq.com'},params: req.query}).then((response) => {var ret = response.dataif (typeof ret === 'string') {var reg = /^\w+\(({[^\(\)]+})\)$/var matches = response.data.match(reg)if (matches) {ret = JSON.parse(matches[1])}}res.json(ret)}).catch((e) => {console.log(e)})
})app.use('/api', apiRoutes)app.use(express.static('./dist'))module.exports = app.listen(port, function (err) {if (err) {console.log(err)return}console.log('Listening at http://localhost:' + port + '\n')
})

是为了在build里面加port 让项目跑在这个端口

config/index.js

// see http://vuejs-templates.github.io/webpack for documentation.
var path = require('path')
module.exports = {build: {env: require('./prod.env'),port: 9000,index: path.resolve(__dirname, '../dist/index.html'),assetsRoot: path.resolve(__dirname, '../dist'),assetsSubDirectory: 'static',assetsPublicPath: '',productionSourceMap: true,// Gzip off by default as many popular static hosts such as// Surge or Netlify already gzip all static assets for you.// Before setting to `true`, make sure to:// npm install --save-dev compression-webpack-pluginproductionGzip: false,productionGzipExtensions: ['js', 'css'],// Run the build command with an extra argument to// View the bundle analyzer report after build finishes:// `npm run build --report`// Set to `true` or `false` to always turn it on or offbundleAnalyzerReport: process.env.npm_config_report},dev: {env: require('./dev.env'),port: 8080,autoOpenBrowser: true,assetsSubDirectory: 'static',assetsPublicPath: '/',proxyTable: {},// CSS Sourcemaps off by default because relative paths are "buggy"// with this option, according to the CSS-Loader README// (https://github.com/webpack/css-loader#sourcemaps)// In our experience, they generally work as expected,// just be aware of this issue when enabling this option.cssSourceMap: false}
}

如何优化首屏加载提到了路由懒加载

让组件等于一个方法，这个方法再resolve这个组件

import Vue from 'vue'
import Router from 'vue-router'Vue.use(Router)const Recommend = (resolve) => {import('components/recommend/recommend').then((module) => {resolve(module)})
}const Singer = (resolve) => {import('components/singer/singer').then((module) => {resolve(module)})
}const Rank = (resolve) => {import('components/rank/rank').then((module) => {resolve(module)})
}const Search = (resolve) => {import('components/search/search').then((module) => {resolve(module)})
}const SingerDetail = (resolve) => {import('components/singer-detail/singer-detail').then((module) => {resolve(module)})
}const Disc = (resolve) => {import('components/disc/disc').then((module) => {resolve(module)})
}const TopList = (resolve) => {import('components/top-list/top-list').then((module) => {resolve(module)})
}const UserCenter = (resolve) => {import('components/user-center/user-center').then((module) => {resolve(module)})
}

vue升级的注意事项

在devDependencies里面的vue-template-compiler一定要和vue的版本保持一致否则编译的时候会报错。