It uses css selectors to access and manipulate html elements (DOM Objects) on a web page.
jQuery provides both a companion UI (user interface) and plugins.
Many large companies use jQuery on their websites:
For a more in-depth look at jQuery, visit our jQuery tutorial.
Prototype is a library that provides simple APIs for performing common web tasks.
API is an abbreviation for Application Programming Interface. It is a library of properties and methods for manipulating the HTML DOM.
MooTools also includes some lightweight effects and animation functions.
Here are some other frameworks that were not covered above:
Ext JS - Customizable widget for building rich Internet applications.
Dojo - Toolkit for DOM operations, events, widgets, and so on.
UIZE - Widgets, AJAX, DOM, templates, etc.
CDN - Content Delivery Network
You always want the web page to be as fast as possible. you want the page to be as small as possible, and you want the browser to cache as much as possible.
CDN (Content Delivery Network) solves this problem. A CDN is a network of servers that contain a code base that can be shared.
FREE CDN RESOURCES ARE:
usually you only need to reference a library file from a web page.
In the next chapter of this tutorial, we'll walk you through the testing process for jQuery in its entirety.