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javascriptangularjsng-classng-style

How to conditionally set specific class property with angular js?

I have 1 div in which I want to conditionally set background color property of this class. I am using boostrap progress bar and I want to use below class only because it contains some custom settings for progress bar.

Below is my div:

.statistics .progress-bar {
    background-color: black;
    border-radius: 10px;
    line-height: 20px;
    text-align: center;
    transition: width 0.6s ease 0s;
    width: 0;
}




 <div class="statistics" ng-repeat="item in data">
    <div class="progress-bar" role="progressbar" aria-valuenow="70"
                                    aria-valuemin="0" aria-valuemax="100" ng-style="{'width' : ( item.statistics + '%' )}">
     </div>
  </div>

Condition is like below :

If statistics > 100
    backgroundcolor=red;
else 
    backgroundcolor=black;
Solution

  • You can do it using simple expression

    ng-style="<condition> ? { <true-value> } : { <false-value> }"

    Output

    Updated Output

    Code:

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

    <head>
        <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.8/angular.min.js"></script>
    </head>

    <body ng-controller="myCtrl">

        <div ng-style="item.statistics > 100 ? { 'background-color':'red', 'width': item.statistics + '%' }: { 'background-color':'yellow', 'width': item.statistics + '%'}">
            <h2>$scope.statistics = {{statistics}}</h2>
        </div>

        <div ng-style="item.statistics2 > 100 ? { 'background-color':'red', 'width': item.statistics2 + '%' } : { 'background-color':'yellow', 'width': item.statistics2 + '%'}">
            <h2>$scope.statistics2 = {{statistics2}}</h2>
        </div>

        <script>
            var myApp = angular.module("myApp", []);

            myApp.controller("myCtrl", ['$scope', function($scope) {
                $scope.item = {};
                $scope.item.statistics = 30;
                $scope.item.statistics2 = 101;
            }]);
        </script>
    </body>

    </html>