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Doing AJAX with popular javascript libraries


| Basic | Prototype.js | Dojo Toolkit | Yahoo UI Library | ASP.NET | Rails |

Prototype.js

Most javascript lovers must already be knowing this. Prototype.js is the legendary collection of javascript gems in a single file. AJAX in one of many things it does. Once you add reference to prototype.js you can make AJAX request like this: 

new Ajax.Request(url,
  {
    method:'get',
    onSuccess: function(response){alert(response.responseText);},
    onFailure: function(){ alert('There was a problem.') }
  });

You can assign following callback methods (in addition to onSuccess and onFailure).

onUninitialized
onLoading
onLoaded
onInteractive
onComplete

That's not all, the library also has 'Ajax.Updater' which can be used to refresh a section of webpage with HTML coming from server 

var myAjax = new Ajax.Updater(
	placeholder_id,
	url,
    	{
    	 method: 'get',
    	 parameters: params
    	}
);

Here the contents of an element which whose id is 'placeholder_id' are replaced with response of the request. The AJAX request is made after appending the 'params' to the url.
Prototype is a very well written javascript library. It can do incredible things. Make sure you check out its website here:

http://www.prototypejs.org/learn/introduction-to-ajax
http://www.prototypejs.org/learn/json

  • Strongly recommended if you are doing complex stuff with javascript and AJAX.
  • Lightweight (about 46.3 Kb), compared to feature it provides.
  • Well designed, no matter what web development framework you use (ASP.NET,Rails,PHP…etc), you will find this very useful.



| Basic | Prototype.js | Dojo Toolkit | Yahoo UI Library | ASP.NET | Rails |

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