AngularJS | ng-disabled Directive

The ng-disabled Directive in AngularJS is used to enable or disable HTML elements. If the expression inside the ng-disabled attribute returns true then the form field will be disabled or vice versa. It is usually applied on form field (input, select, button, etc).

Syntax:

<element ng-disabled="expression"> Contents... </element>

Example 1: This example uses ng-disabled Directive to disable the button.

<!DOCTYPE html> 
<html> 
      
<head> 
    <title>ng-disabled Directive</title> 
  
    <script src= 
"https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"> 
    </script> 
</head> 
  
<body ng-app="app" style="text-align:center"> 
      
    <h1 style="color:green">GeeksforGeeks</h1> 
      
    <h2>ng-disabled Directive</h2> 
      
    <div ng-controller="app" ng-init="disable=false"> 
        <button ng-click="geek(disable)" ng-disabled="disable"> 
            Click to Disable 
        </button> 
          
        <button ng-click="geek(disable)" ng-show="disable"> 
            Click to Enable 
        </button> 
    </div> 
      
    <script> 
        var app = angular.module("app", []); 
        app.controller('app', ['$scope', function ($app) { 
            $app.geek = function (disable) { 
                $app.disable = !disable; 
            } 
        }]); 
    </script> 
</body> 
  
</html> 

Output:
Before clicking the button:
ngdisabled
After clicking the button:

Example 2: This example uses ng-disabled Directive to enable and disable button using checkbox.

<!DOCTYPE html> 
<html> 
      
<head> 
    <title>ng-disabled Directive</title> 
  
    <script src= 
"https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"> 
    </script> 
</head> 
  
<body ng-app="app" style="text-align:center"> 
      
    <h1 style="color:green">GeeksforGeeks</h1> 
      
    <h2>ng-disabled Directive</h2> 
      
    <div ng-controller="geek"> 
        <h4> 
            Check it  
            <input type="checkbox" ng-model="check" /> 
        </h4> 
          
        <button type="button" ng-disabled="!(check)"> 
            Click to submit 
        </button> 
    </div> 
      
    <script> 
        var app = angular.module("app", []); 
        app.controller('geek', ['$scope', function ($scope) { 
            $scope.disableClick = function (isDisabled) { 
            $scope.isDisabled = !isDisabled; 
            } 
        }]); 
    </script> 
</body> 
  
</html> 

Output:
Before clicking the button:
ngdisabled
After clicking the button:

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