angular.js - webstorm angular 语法没有错误，但有红色波浪线警告？

Question

已经在plugins-->browser repositories..-->angular install
重启了webstorm 依然有这个警告，请问你们都是怎么解决的？

Answer 1

The ng-class="{{bold}}" here is a grammatical error.
The ng-class="{focus:$index==focus}" below is the correct way of writing. This sentence means if $index= =focus is true, then add focus to the class list