TypeError: Cannot read property ‘replace‘ of undefined

微信小程序报错

TypeError: Cannot read property ‘replace’ of undefined

感觉代码是没有问题的；
刚开始：

let bg1 = this.myData.backgroundImage.replace("http://fast.hnzhilv.com/mingpian/bg", "");let url1 = item.url.replace("http://fast.hnzhilv.com/mingpian/%E5%90%8D%E7%89%87", "");if (bg1 == url1) {flag = true}

改良后：

if (this.myData.backgroundImage && item.url) {let bg1 = this.myData.backgroundImage.replace("http://fast.hnzhilv.com/mingpian/bg", "");let url1 = item.url.replace("http://fast.hnzhilv.com/mingpian/%E5%90%8D%E7%89%87", "");if (bg1 == url1) {flag = true}}

其实就是当它还没加载完的时候是null或者是undefined，所以就直接报错了，这里只需要判断一下就好了。
解决了！

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微信小程序报错

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