I am trying to add class to my sidebar when the viewport is less than or equal to 641px, and I have to watch the width of the window for that caseI am trying to add class to my sidebar when the
阅读背景：
在ui中执行某些操作之前，AngularJS范围不会更新，例如单击具有函数的对象
来源：互联网
分享到：
