How to set radio button checked by button click in AngularJS ?

In this article, we will see how to set the radio button checked by button click in AngularJS.

Approach: The approach is to use the ng-checked to check the radio button in the DOM. In the first example, a single radio button is checked by the button and In the second example, multiple radio button are checked by button. ng-model is used to bind the radio buttons.

Example 1:

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<!DOCTYPE HTML>
<html>
  
<head>
    <script src=
"//ajax.googleapis.com/ajax/libs/angularjs/1.2.13/angular.min.js">
    </script>
  
    <script>
        var myApp = angular.module("app", []);
        myApp.controller("controller", function ($scope) {
            $scope.radioCh = function () {
                if (!$scope.radio) {
                    $scope.radio = true;
                } else {
                    $scope.radio = false;
                }
            }
        });
    </script>
</head>
  
<body style="text-align:center;">
    <h1 style="color:green;">
        GeeksForGeeks
    </h1>
    <p>
        How to set radio button checked
        by button click in AngularJS
    </p>
  
    <div ng-app="app">
        <div ng-controller="controller">
            Radio button: <input type="radio" 
                    ng-checked="radio">
            <br><br>
            <button ng-click="radioCh()" 
                    ng-model='radio'>
                Click here
            </button>
            <br><br>
        </div>
    </div>
</body>
  
</html>

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Output:



Example 2:

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<!DOCTYPE HTML>
<html>
  
<head>
    <script src=
"//ajax.googleapis.com/ajax/libs/angularjs/1.2.13/angular.min.js">
    </script>
  
    <script>
        var myApp = angular.module("app", []);
        myApp.controller("controller", function ($scope) {
            $scope.radioCh = function () {
                if (!$scope.radio) {
                    $scope.radio = true;
                } else {
                    $scope.radio = false;
                }
            }
        });
    </script>
</head>
  
<body style="text-align:center;">
    <h1 style="color:green;">
        GeeksForGeeks
    </h1>
    <p>
        How to set radio button checked
        by button click in AngularJS
    </p>
    <div ng-app="app">
        <div ng-controller="controller">
            Radio button 1: <input type="radio" 
                ng-checked="radio">
            <br><br>
  
            Radio button 2: <input type="radio" 
                    ng-checked="radio">
            <br><br>
  
            Radio button 3: <input type="radio" 
                    ng-checked="radio">
            <br><br>
  
            <button ng-click="radioCh()" 
                    ng-model='radio'>
                Click here
            </button>
            <br><br>
        </div>
    </div>
</body>
  
</html>       

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Output:

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