AngularJS | ng-readonly Directive

The ng-readonly Directive in AngularJS is used to specify the readonly attribute of an HTML element. The HTML element will be readonly only if the expression inside ng-readonly directive returns true.

Syntax:

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

Example 1: This example uses ng-readonly Directive to enable readonly property.

<!DOCTYPE html> 
<html> 
    <head> 
        <title>ng-readonly Directive</title> 
          
        <script src= 
"https://ajax.googleapis.com/ajax/libs/angularjs/1.4.2/angular.min.js"> 
        </script> 
    </head> 
      
    <body ng-app style="text-align:center"> 
        <h1 style="color:green">GeeksforGeeks</h1> 
        <h2>ng-readonly Directive</h2> 
          
        <div> 
            <label>Check to make month readonly: <input type="checkbox"
            ng-model="open"></label> 
              
            <br><br> 
              
            Input Month:<input ng-readonly="open" type="month"
                    ng-model="month"> 
        </div> 
    </body> 
</html>                     

Output:
Before checked the checkbox:
ngreadonly
After checked the checkbox:

Example 2: This example uses ng-readonly Directive to enable the readonly property in option list.

<!DOCTYPE html> 
<html> 
    <head> 
        <title>ng-readonly Directive</title> 
          
        <script src= 
"https://ajax.googleapis.com/ajax/libs/angularjs/1.4.2/angular.min.js"> 
        </script> 
    </head> 
      
    <body ng-app="app" style="text-align:center"> 
        <h1 style="color:green">GeeksforGeeks</h1> 
        <h2>ng-readonly Directive</h2> 
        <div ng-controller="geek"> 
            <div > 
                <button ng-click="edit=true">Edit</button> 
                <button ng-init="edit=false" ng-click="edit=false"> 
                    Update 
                </button>                  
            </div> 
            <br> 
              
            <div>Select sorting algorithm</div><br> 
              
            <div><select class="form-control" ng-disabled="!edit"
                    ng-init="status=1" ng-model="status"
                    ng-options="s.id as s.set for s in set"> 
                </select> 
            </div> 
        </div> 
          
        <script> 
            var app = angular.module("app", []); 
            app.controller('geek', ['$scope', function ($scope) { 
                $scope.set = [{ id: 1, set: 'Merge sort' }, 
                    { id: 2, set: 'Quick sort' }, 
                    { id: 3, set: 'Bubble sort' }]; 
            }]); 
        </script> 
    </body> 
</html>                     

Output:
Clicking the Edit button:
ngreadonly
Clicking the Update button:

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