angular.js - angularjs ng-class issue

Question

Why is this all_font_color not taking effect?

allFontColor in scope is indeed true

Answer 1

Thank you everyone. I still don’t know how to solve yesterday’s problem. I don’t know why.
Finally I changed the writing method and solved it using class="{{all_font_color_}}"this method

Answer 2

You posted the entire code of ng-class. You can’t see it on the right side. I wonder if there is something wrong with your format

Answer 3

1. Determine whether the class exists

2. Make sure the class style is not overwritten

You can test it in plnkr

Answer 4

I feel like you should write like this:
ng-class="{true:'active',false:'inactive'}[tabVal==2]"
The meaning of the above expression is: by judging whether 'tabVal' is equal to 2, To determine the style value of ng-class;
If tabVal==2 is true, then ng-class='active';
where tabVal can be defined in the controller and can be a variable;
active is any class name;