Question and Answer-Checkbox

ng-click="isHidden = toggle value and assigned to isHidden use ng-show when -

by gogirl

HTML

<div ng-app ng-init="isHidden = '+'">
    <button ng-click="isHidden = { '-': '+', '+':'-'}[isHidden]">
        {{ isHidden }}
    </button> What kind of problem are you trying to solve?   
    
    <h1 class="active" ng-show="isHidden == '-'" > 
        I hide when your - button is clicked
    </h1>    
</div>

CSS

.active {
    background-color: green;
    color: white;
}

JavaScript

//eval[isHidden] toggle value and assigned to isHidden
//if isHidden eq minus show answer
 //ng-class evaluates the expression (in the square brackets) and then
// uses that as the key for the object; the value that the key relates
// to is the class that applies.