angular.js - webstorm angular syntax no errors but red squiggly warning?

Question

I have restarted webstorm in plugins-->browser repositories..-->angular install
and I still get this warning. How did you solve it? ?

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