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选中复选框的时候，li上加入一个classname，取消选中的时候，去掉li的classname 寻觅了好长时间也没找到操作dom的好办法
Use ng-class ng-class="{'className':value}" When value is true, className style will be applied
If you use class，最好给li一个ng-class,<li ng-class="{true: 'clasname'}[checked == true]" ></li>~
class
li
ng-class
<li ng-class="{true: 'clasname'}[checked == true]" ></li>
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Use ng-class
ng-class="{'className':value}"
When value is true, className style will be applied
If you use
class，最好给li一个ng-class,<li ng-class="{true: 'clasname'}[checked == true]" ></li>~