The function is not being executed when using $scope.$apply()

Question

The function is not being executed when using $scope.$apply()

I am in need of a customized click directive that can execute the passed code using scope.$apply().

$(elem).on('click', function(){
    scope.$apply(attrs.wdClick);
});

Everything works smoothly when I pass something like wd-click="something = !something". However, I encountered an issue when trying to call a $rootScope function - it didn't work. Surprisingly, the default ng-click worked perfectly fine.

wd-click="$root.someFunction()" //the function doesn't get called but ng-click does

I attempted to update the directive to solve this problem:

$(elem).on('click', function(){
    $rootScope.$apply(attrs.wdClick);
});

Unfortunately, even after making this change, the issue persists. Any suggestions?

javascript angularjs

Answer 1

Answer №1

attrs.wdClick is a string type, therefore using $apply on it will not have any effect. Instead, you should pass the string to $eval in order to execute the function.

scope.$apply(function() {
  scope.$eval(attrs.wdClick)
});

Answer 2

attrs.wdClick is a string type, therefore using $apply on it will not have any effect. Instead, you should pass the string to $eval in order to execute the function.

scope.$apply(function() {
  scope.$eval(attrs.wdClick)
});

Answer 3

Answer №2

Always remember to enclose your code within a function(){}

scope.$apply(function(){
    attrs.wdClick() // seems like this is a custom function
});

Answer 4

Always remember to enclose your code within a function(){}

scope.$apply(function(){
    attrs.wdClick() // seems like this is a custom function
});

Answer 5

Answer №3

Do you need to access your rootscope method from another controller? To achieve this, you can follow these steps:

angular.module('app', [])
    .controller('Ctrl', function Ctrl1($scope,  $rootScope) {
        $rootScope.blah = 'Hello';
        $scope.yah = 'World'
    })
    .directive('myTemplate', function() {
        return {
            restrict: 'E',
            templateUrl: 'my-template.html',
            scope: {},
            controller: ["$scope", "$rootScope", function($scope, $rootScope) {
                console.log($rootScope.blah);
                console.log($scope.yah);
                
                $scope.test = function(arg) {
                    console.log(arg);
                }
            }]
        };
    });

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.22/angular.min.js"></script>
  <div ng-app="app">
    <div ng-controller="Ctrl">
        <my-template></my-template>
    </div>
    
    <!-- my-template.html -->
    <script type="text/ng-template" id="my-template.html">
        <label ng-click="test($root.blah)">Click</label>
    </script>
</div>

You can also test it out on jsfiddle, http://jsfiddle.net/mg74b/24/

Answer 6

Do you need to access your rootscope method from another controller? To achieve this, you can follow these steps:

angular.module('app', [])
    .controller('Ctrl', function Ctrl1($scope,  $rootScope) {
        $rootScope.blah = 'Hello';
        $scope.yah = 'World'
    })
    .directive('myTemplate', function() {
        return {
            restrict: 'E',
            templateUrl: 'my-template.html',
            scope: {},
            controller: ["$scope", "$rootScope", function($scope, $rootScope) {
                console.log($rootScope.blah);
                console.log($scope.yah);
                
                $scope.test = function(arg) {
                    console.log(arg);
                }
            }]
        };
    });

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.22/angular.min.js"></script>
  <div ng-app="app">
    <div ng-controller="Ctrl">
        <my-template></my-template>
    </div>
    
    <!-- my-template.html -->
    <script type="text/ng-template" id="my-template.html">
        <label ng-click="test($root.blah)">Click</label>
    </script>
</div>

You can also test it out on jsfiddle, http://jsfiddle.net/mg74b/24/

Answer 7

Answer №4

Have you considered using a scope property instead of attrs in this scenario? It may be more efficient. Additionally, it's recommended to utilize $timeout over $apply.

angular
        .module('app', [])
        .directive('myDirective', myDirective);

myDirective.$inject = ['$timeout'];
function myDirective($timeout) {
    return {
        restrict: 'E',
        templateUrl: 'my-template.html',
        scope: {
            wdClick: '='
        },
        link: linkFn
    };

    function linkFn(scope, element) {
        element.on('click', function () {
            $timeout(scope.wdClick);
        });
    }
}

Answer 8

Have you considered using a scope property instead of attrs in this scenario? It may be more efficient. Additionally, it's recommended to utilize $timeout over $apply.

angular
        .module('app', [])
        .directive('myDirective', myDirective);

myDirective.$inject = ['$timeout'];
function myDirective($timeout) {
    return {
        restrict: 'E',
        templateUrl: 'my-template.html',
        scope: {
            wdClick: '='
        },
        link: linkFn
    };

    function linkFn(scope, element) {
        element.on('click', function () {
            $timeout(scope.wdClick);
        });
    }
}

The function is not being executed when using $scope.$apply()

Answer №1

Answer №2

Answer №3

Answer №4

Similar questions

The pagination component in React with Material-ui functions properly on a local environment, but encounters issues when deployed

Question about Looping Concept

Customize Your Greasemonkey Script Timeout

Should a Service Worker be automatically installed on each page reload, or only when a user navigates to a new page?

Display modal within a React list

I'm having trouble displaying the X's and O's in my tic tac toe JavaScript game. Any suggestions on how to resolve this issue?

Switching players every two turns in a JavaScript AngularJS game

Access the specific scope I established in Angular console, excluding the entire scope

Definition of Stencil Component Method

The npm system is encountering difficulties in parsing the package.json file

Error message for Joi when validating a nested array of objects

Having issues with Google Maps API v3 not loading properly

Even with minify and uglify plugins implemented, the React App remains unminified

Creating variables in styled-components allows you to easily reuse values throughout

What is the best way to implement an AJAX request to update the page without having to refresh it?

Use jQuery to switch back and forth between the login and registration forms on a single

Having trouble persisting data with indexedDB

Displaying and Concealing Elements with AngularJS and Implementing Alternating Styles

Struggling with inserting a fresh form into every additional <div> section

Retrieve the current date and time in JSON format using moment.js for the local