angular.js - How to use angularjs to achieve the following effects?

Question

Click System Management to expand the following User Management...etc.

Answer 1

This is not a problem with Angular.
It should be considered a style problem.
Add the .active class to the parent element when clicked
.list{diplay:none}
.active .list{display:block}

Answer 2

You can use angular’s ​​attribute directive to achieve this, there are specific examples on the official website