how to apply class in DOM using value returned from a function in angularJS?

Question

I have my DOM element as :

<i id= class="icon clr-org fleft ion-bookmark" ng-class="{business.class : setFavouriteBusinessIcon(business.ID, $index)}"></i>

now I want to apply business.class which is a variable in my scope as the element's class whenever setFavouriteBusinessIcon(business.ID, $index) returns true.

but the current ng-class condition is not working.

class="{{className}}" this works fine

Mohsin Muzawar
– Mohsin Muzawar

2017-04-19 10:41:30 +00:00
Commented Apr 19, 2017 at 10:41 — Mohsin Muzawar
– Mohsin Muzawar, Commented Apr 19, 2017 at 10:41

tanmay · Accepted Answer · 2017-04-19 10:43:34Z

1

You can do so by having single quotes and {{...}} around it. Like this:

<i ng-class="{'{{business.class}}' : setFavouriteBusinessIcon(business.ID, $index)}"></i>

Here's a working example: (notice that world class has been applied and so is its CSS)

var app = angular.module('plunker', []);

app.controller('MainCtrl', function($scope) {
  $scope.name = 'world';
});

.world {
  background-color: red;
}

<!DOCTYPE html>
<html ng-app="plunker">

<head>
  <meta charset="utf-8" />
  <title>AngularJS Plunker</title>
  <script>
    document.write('<base href="' + document.location + '" />');
  </script>
  <script data-require="[email protected]" src="https://code.angularjs.org/1.4.12/angular.js" data-semver="1.4.9"></script>
</head>

<body ng-controller="MainCtrl">
  <p ng-class="{'{{name}}': true}">Hello {{name}}!</p>
</body>

</html>

answered Apr 19, 2017 at 10:43

tanmay

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