AngularJS Checkbox Not Working

If you are facing issues with AngularJS checkbox not working, it could be due to multiple reasons. In this article, we will discuss some of the common causes and solutions for checkboxes not working in AngularJS.

Common Causes and Solutions

Issue with ng-model

One of the most common causes of AngularJS checkbox not working is an issue with ng-model. Make sure that ng-model is properly defined and assigned to the checkbox. Also, check if the ng-model value is getting updated properly when you select or deselect the checkbox.

<input type="checkbox" ng-model="isChecked"> 

$scope.isChecked = false; // default value

Issue with ng-checked

Another common issue with AngularJS checkbox is related to ng-checked. Make sure that ng-checked is used only when ng-model is not defined. If both ng-checked and ng-model are used together, it can cause unexpected behavior.

<input type="checkbox" ng-checked="isChecked">

$scope.isChecked = false; // default value

Issue with ng-true-value and ng-false-value

Sometimes, issues with AngularJS checkbox can also occur due to improper usage of ng-true-value and ng-false-value attributes. Make sure that these attributes are defined and assigned with the correct values.

<input type="checkbox" ng-model="isChecked" ng-true-value="yes" ng-false-value="no">

$scope.isChecked = 'no'; // default value

Issue with Controller Scope

Make sure that the controller scope is properly defined and referenced in the HTML code. If the controller scope is not defined, it can cause issues with AngularJS checkbox.

<div ng-controller="MyController">
  <input type="checkbox" ng-model="isChecked">
</div>

angular.module('myApp', [])
  .controller('MyController', function($scope) {
    $scope.isChecked = false; // default value
  });

Conclusion

There are many reasons why AngularJS checkbox may not be working as expected. By following the above solutions, you can easily fix most of the issues related to AngularJS checkbox. Additionally, make sure that you are using the latest version of AngularJS and best coding practices.