




. dojo est un. Kit Framework JavaScript (kit de composants logiciels) qui est en quelque sorte moins célèbre que. jQuery, Mais pourtant il possède presque les mêmes caractéristiques. Très facile à installer et léger, il vous permet de ( logiquement ) à organiser votre. code JavaScript à. classes JavaScript, Ainsi que des attributs et méthodes. Vous pouvez utiliser le. JavaScript héritage concepts et des inclusions de classes dans l'autre.
. dojo vient un autre cadre appelé : . dijit </b>. Il contient entre autres nombreux ( entièrement codé ). outils graphiques comme. calendriers, Fenêtres fondu ou même
You use Javascript to animate your website, but your code lacks of structure. Your JavaScript functions are scattered in <script> tags placed all around and you would like to clean this up? Then Dojo is for you.
The installation of Dojo is done in three steps: download, inclusion on the site and loading Dojo when the opening the site.
The best way to get Dojo is to go directly to download the latest stable version from the official website: http://dojotoolkit.org/download/
Once downloaded, you will have three folders: "dojo", "dijit" and "dojox" (the latter is in fact an extension of the basic framework).
Copy the three folders to the root of your website (or in a subfolder).
Last step, the most important: ask the user's browser to load the framework when loading the site. For this, simply place the following in the "head": a tag source in the "head"
<head> <script src=\"../../dojo/dojo.js\" type=\"text/javascript\"></script> </head>
Where "dojo.js" is the main page of the Javascript framework. Simply edit the path to the dojo folder according to your current installation!
That's it! Dojo is now ready for use on your site!
How to use the framework?
The dojo.addOnLoad() method: This method is called when the site us loaded. To end the session simply use the dojo.addOnUnload() method, upon closing the website.
Simply place in the home page of your site a JS script calling this method:
<script type="text/javascript"> dojo.addOnLoad( function() { // Place the code to be launch when site is loaded here } ); </script>
Here below, you will learn how to create a Javascript class via Dojo, using the "Application" class.
Start by creating a "Application.js" file.
To illustrate its use, let's pretend that this class is at the root of the site, in the "mysite" folder, and in the "javascript" subfolder: /mysite/javascript/
Ceating a JS class:
dojo.provide('mysite.javascript.Application'); dojo.declare('mysite.javascript.Application', null, { myFirstArgument: null, mySecondArgument: null, constructor: function(param1, param2) { myFirstArgument = param1; // Class constructor code. }, method1: function(param){ }, method2: function(){ } });
Here we see several things:
Each attribute and method is followed by a comma to separate it from other, except the last.
As example:
dojo.provide ('monsite.javascript.Application'); dojo.declare ('monsite.javascript.Application', null, { _user: null, constructor: function (userParam) { this._utilisateur = userParam; } start: function () { alert (this._utilisateur); } });
Specifically, here we will create the Application class with a string as parameter, pass the parameter attribute, and then call a method "start ()" which will display this string.
Back to dojo.addOnLoad. Here we will create an instance of our application class and display a specific string.
The code is as follows:
<script type="text/javascript"> dojo.addOnLoad( function() { dojo.require('monsite.javascript.Application'); var appli = new monsite.javascript.Application("Salut CommentCaMarche"); appli.start(); } ); </script>
The steps are: