AngularJS | ng-checked Directive

The ng-checked Directive in AngularJS is used to read the checked or unchecked state of the checkbox or radiobutton to true or false. If the expression inside the ng-checked attribute returns true then the checkbox/radiobutton will be checked otherwise it will be unchecked.

Syntax:

<input type="checkbox|radio" ng-checked="expression"> Contents... </input>

If expression returns true then the element’s checked attribute will be checked.

Example: This example uses ng-checked Directive to select checkbox and return the all selected checkbox value.

<!DOCTYPE html> 
<html> 
      
<head> 
    <title>ng-checked Directive</title> 
  
    <script src= 
"https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"> 
    </script> 
</head> 
  
<body ng-app="app"> 
    <div ng-controller="geek"> 
        <h1 style="color:green">GeeksforGeeks</h1> 
        <h2>ng-checked Directive</h2> 
   
        <input type="checkbox" ng-checked="check1 && 
                check2 && check3 && check4 && check5" 
                ng-model="isChecked" /><b>Select All</b><br> 
              
        <input type="checkbox" ng-model="check1" 
            ng-checked="isChecked" />First<br> 
          
        <input type="checkbox" ng-model="check2" 
            ng-checked="isChecked" />Second<br> 
              
        <input type="checkbox" ng-model="check3"
            ng-checked="isChecked" />Three<br> 
          
        <input type="checkbox" ng-model="check4" 
            ng-checked="isChecked" /> Four<br> 
              
        <input type="checkbox" ng-model="check5"
            ng-checked="isChecked" />Five<br><br> 
          
        <b>isAllSelected = {{isChecked}}</b> 
    </div> 
      
    <script> 
        var app = angular.module("app", []); 
        app.controller('geek', ['$scope', function ($scope) { 
        }]); 
    </script> 
</body> 
  
</html> 

Output:
Before clicking the checkbox:
ng-checked
After clicking the checkbox (select all):

My Personal Notes

Recommended Posts: