How to set id attribute of an element dynamically using AngularJS ?

Last Updated : 01 Aug, 2024

In this article, we will see how to change the ID of any element dynamically using AngularJS, along with understanding its implementation through examples.

Approach 1: In this approach, a function is called when the button is clicked, which changes the ID of the element to id-5. We are calling a function on the scope variable and changing the ID from id-1 to id-5.

Example 1: This example describes setting the element's id attribute dynamically in AngularJS.

HTML

<!DOCTYPE HTML> 
<html>  

<head>
    <script src=
"https://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.id = 1;
            $scope.IdChange = function() {
                $scope.id = 5;
            };
        });
    </script> 

    <style>
        #id-1{ 
            color: red;
        }
        #id-5{
            color: green;
        }
    </style>
</head>   

<body style="text-align:center;">
    <h1 style="color:green;">  
        GeeksForGeeks  
    </h1>    
    <p>
        Change ID dynamically
    </p>
    <div ng-app="app">  
        <div ng-controller="controller">  
            <div id="id-{{id}}">
                Id of element is "id-{{id}}" 
            </div>
            <br>
            <button ng-click="IdChange()">
                Click to Change ID
            </button>  
        </div>  
    </div> 
</body>   
</html>

Output:

Approach 2: In this approach, a function is called when the button is clicked, which changes the ID from one to another. We are calling a function on the scope variable and changing the ID from id-0 to id-1, id-1 to id-2, and id-2 to id-0.

Example 2: In this example, the element's id attribute is utilized to change the styling property.

HTML

<!DOCTYPE HTML> 
<html>  

<head>
    <script src=
"https://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.id = 1;
            $scope.IdChange = function() {
                 $scope.id = ($scope.id + 1)%3;
            };
        });
    </script> 
    <style>
        #id-0 { 
          color: white;
          background: blue;
        }
        #id-1 {
          color: white;
          background: green;
        }
        #id-2 {
          color: white;
          background: red;
        }
    </style>
</head>   

<body style="text-align:center;">
    <h1 style="color:green;">  
        GeeksForGeeks  
    </h1> 
    <p>
    Change ID dynamically
    </p>
    <div ng-app="app">  
        <div ng-controller="controller">  
            <div id="id-{{id}}">
                Id of element is "id-{{id}}" 
            </div>
            <br>
            <button ng-click="IdChange()">
                Click to Change ID
            </button>  
        </div>  
    </div> 
</body>   
</html>

Output:

Approach 3: In this approach, the ID of the element is set by an <input> element.

Example 3: In this example, the <input> element is used to enter the id value that will be changed dynamically by clicking the button.