RequireJS - Loading jQuery from CDN

jQuery uses CDN (Content Delivery Network) to define the dependencies for jQuery plugins by calling the define() function.

Loading jQuery

define(["jquery", "jquery.load_js1", "jquery.load_js2"], function($) {
   $(function() {
      //code here
   });
});

Example

The following example uses CDN to define the dependencies for jQuery plugins. Create a html file with the name index.html and place the following code in it −

<!DOCTYPE html>
<html>
   <head>
      <title>Load jQuery from a CDN</title>
      <script data-main = "app" src = "lib/require.js"></script>
   </head>
   
   <body>
      <h2>Load jQuery from a CDN</h2>
      <p>Welcome to Tutorialspoint!!!</p>
   </body>
</html>

Create a js file with the name app.js and add the following code in it −

// you can configure loading modules from the lib directory
requirejs.config ({
   "baseUrl": "lib",
   
   "paths": {
      "app": "../app",
	  
      //loading jquery from CDN
      "jquery": "//ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min"
   }
});

//to start the application, load the main module from app folder
requirejs(["app/main"]);

Create a folder called app and load the main.js module from this folder −

define(["jquery", "jquery.load_js1", "jquery.load_js2"], function($) {
   
   //loading the jquery.load_js1.js and jquery.load_js2.js plugins 
   $(function() {
      $('body').load_js1().load_js2();
   });
});

Create one more folder called lib to store the require.js file and other js files as shown below −

lib/jquery.load_js1.js

define(["jquery"], function($) {
   
   $.fn.load_js1 = function() {
      return this.append('<p>Loading from first js file!</p>');
   };
});

lib/jquery.load_js2.js

define(["jquery"], function($) {
   
   $.fn.load_js2 = function() {
      return this.append('<p>Loading from second js file!</p>');
   };
});

Output

Open the HTML file in a browser; you will receive the following output −

requirejs_jquery.htm