Skip to main content

angularjs difference between link and controller

Hello everyone, I am going to share the code sample for differentiate to link and controller.

Link : The link is a function and use to attached handlers and also use for DOM elements modification.

Controller : The controller is use to share the $scope data within the scope and also provide the ways of linking the DOM elements.

Table of Contents          
  1. HTML code sample for link vs. controller            
  2. AngularJs code sample for link vs. controller
  3. Full (HTML+ AngularJs) code sample for link vs. controller
  4. Live demo link  http://embed.plnkr.co/cbsRod/preview
HTML code sample for link vs. controller

<div ng-app="linkApp">
    <div ng-controller="linkCtrl">
        <link-directive></link-directive>
    </div>
</div>

AngularJs code sample for link vs. controller

var app = angular.module('linkApp', []);

//This is controller section.
app.controller('linkCtrl', ["$scope", function ($scope) {
    $scope.count = 'One ';
}]);

//This is directive section.
app.directive('linkDirective', function () {
    return {
        restrict: 'E',
        template: '<span>This is {{count}}!</span>',
        controller: function ($scope, $element) {
            $scope.count = $scope.count + ", Two";
        },
        link: function (scope, el, attr) {
            scope.count = scope.count + ", Three";
        }
    }
});

Full (HTML+ AngularJs) code sample for link vs. controller.

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title>AngularJS directive controller vs. link</title>
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.7/angular.js"></script>
    <script>
        var app = angular.module('linkApp', []);

        //This is controller section.
        app.controller('linkCtrl', ["$scope", function ($scope) {
            $scope.count = 'One ';
        }]);

        //This is directive section.
        app.directive('linkDirective', function () {
            return {
                restrict: 'E',
                template: '<span>This is {{count}}!</span>',
                controller: function ($scope, $element) {
                    $scope.count = $scope.count + ", Two";
                },
                link: function (scope, el, attr) {
                    scope.count = scope.count + ", Three";
                }
            }
        })
    </script>
</head>
<body ng-app="linkApp">
    <div ng-controller="linkCtrl">
        <link-directive></link-directive>
    </div>
</body>
</html>









For more detail you can go links



By Anil Singh | Rating of this article (*****)

Popular posts from this blog

List of Countries, Nationalities and their Code In Excel File

Download JSON file for this List - Click on JSON file    Countries List, Nationalities and Code Excel ID Country Country Code Nationality Person 1 UNITED KINGDOM GB British a Briton 2 ARGENTINA AR Argentinian an Argentinian 3 AUSTRALIA AU Australian an Australian 4 BAHAMAS BS Bahamian a Bahamian 5 BELGIUM BE Belgian a Belgian 6 BRAZIL BR Brazilian a Brazilian 7 CANADA CA Canadian a Canadian 8 CHINA CN Chinese a Chinese 9 COLOMBIA CO Colombian a Colombian 10 CUBA CU Cuban a Cuban 11 DOMINICAN REPUBLIC DO Dominican a Dominican 12 ECUADOR EC Ecuadorean an Ecuadorean 13 EL SALVA...

nullinjectorerror no provider for httpclient angular 17

In Angular 17 where the standalone true option is set by default, the app.config.ts file is generated in src/app/ and provideHttpClient(). We can be added to the list of providers in app.config.ts Step 1:   To provide HttpClient in a standalone app we could do this in the app.config.ts file, app.config.ts: import { ApplicationConfig } from '@angular/core'; import { provideRouter } from '@angular/router'; import { routes } from './app.routes'; import { provideClientHydration } from '@angular/platform-browser'; //This (provideHttpClient) will help us to resolve the issue  import {provideHttpClient} from '@angular/common/http'; export const appConfig: ApplicationConfig = {   providers: [ provideRouter(routes),  provideClientHydration(), provideHttpClient ()      ] }; The appConfig const is used in the main.ts file, see the code, main.ts : import { bootstrapApplication } from '@angular/platform-browser'; import { appConfig } from ...

React | Encryption and Decryption Data/Text using CryptoJs

To encrypt and decrypt data, simply use encrypt () and decrypt () function from an instance of crypto-js. Node.js (Install) Requirements: 1.       Node.js 2.       npm (Node.js package manager) 3.       npm install crypto-js npm   install   crypto - js Usage - Step 1 - Import var   CryptoJS  =  require ( "crypto-js" ); Step 2 - Encrypt    // Encrypt    var   ciphertext  =  CryptoJS . AES . encrypt ( JSON . stringify ( data ),  'my-secret-key@123' ). toString (); Step 3 -Decrypt    // Decrypt    var   bytes  =  CryptoJS . AES . decrypt ( ciphertext ,  'my-secret-key@123' );    var   decryptedData  =  JSON . parse ( bytes . toString ( CryptoJS . enc . Utf8 )); As an Example,   import   React   from ...

39 Best Object Oriented JavaScript Interview Questions and Answers

Most Popular 37 Key Questions for JavaScript Interviews. What is Object in JavaScript? What is the Prototype object in JavaScript and how it is used? What is "this"? What is its value? Explain why "self" is needed instead of "this". What is a Closure and why are they so useful to us? Explain how to write class methods vs. instance methods. Can you explain the difference between == and ===? Can you explain the difference between call and apply? Explain why Asynchronous code is important in JavaScript? Can you please tell me a story about JavaScript performance problems? Tell me your JavaScript Naming Convention? How do you define a class and its constructor? What is Hoisted in JavaScript? What is function overloadin...

SQL Server 2016 - OPENJSON read nested JSON and Insert INTO Tables

Insert multiple level JSON data into SQL Server 2016 - Now Native JSON support in SQL Server 2016 and it provides you some functions to read and parse your JSON object to table format. 1.       The OPENJSON ()   table value function transforms JSON object to one or many rows. It  will not execute any command. It just returns a table row if JSON text is properly formatted. OPENJSON function will also work with JSON arrays and this function can also open nested/hierarchical JSON objects.  OPENJSON will just return set of rows instead of single row. 2.       The JSON_Value () is a scalar function and used to returns a value from JSON on the specified path. There are some specific examples for OPENJSON read nested JSON – Example 1 –  OPENJSON AND JSON INPUT DECLARE @json NVARCHAR ( MAX ) SET @json = N'{             "Name":"An...