AngularJS ng-class if-else expression

Question

AngularJS ng-class if-else expression

With AngularJS I'm using ng-class the following way:

<div class="bigIcon" data-ng-click="PickUp()" 

ng-class="{first:'classA', second:'classB', third:'classC', fourth:'classC'}[call.State]"/>

I'm wondering if I can use the if-else expression to do something similar to this:

<div class="bigIcon" data-ng-click="PickUp()" 

ng-class="{first:'classA', second:'classB', else:'classC'}[call.State]"/>

So whenever call.State differs from first or second use classC and avoid specifying each value?

ng-class angularjs

3 years ago by vishaljlf39

3 Answers

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**aashaykumar** · Answer 1 · 2021-06-24T13:55:59

you could try by using a function like that :



<div ng-class='whatClassIsIt(call.State)'>

Then put your logic in the function itself :



    $scope.whatClassIsIt= function(someValue){

     if(someValue=="first")

            return "ClassA"

     else if(someValue=="second")

         return "ClassB";

     else

         return "ClassC";

    }

**sandhya6gczb** · Answer 2 · 2021-06-29T04:42:00

Use nested inline if-then statements (Ternary Operators)



<div ng-class=" ... ? 'class-1' : ( ... ? 'class-2' : 'class-3')">

for example :



<div ng-class="apt.name.length >= 15 ? 'col-md-12' : (apt.name.length >= 10 ? 'col-md-6' : 'col-md-4')">

    ...

</div>

**pankajshivnani123** · Answer 3 · 2021-06-30T12:28:26

This is the best and reliable way to do this. Here is a simple example and after that you can develop your custom logic:



//In .ts

public showUploadButton:boolean = false;



if(some logic)

{

    //your logic

    showUploadButton = true;

}



//In template

<button [class]="showUploadButton ? 'btn btn-default': 'btn btn-info'">Upload</button>

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AngularJS ng-class if-else expression

3 Answers

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