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Free JavaScript Source Code

100 Best Free jQuery Image and Content Slider Plugins
Demos and source available

sourcecodester.com
JavaScript projects with free source code. Includes dynamic examples with jQuery.

A1 JavaScripts
More free scripts than you can shake a stick at.

Free Scripts
Free cut and paste JavaScript examples for your web pages.

DevScripts
JavaScript Scripts, Code Snippets and Code Samples

Source Code Snippets - JavaScript
The first category of consists of mini-tutorials for the language, followed by categories of source code snippets. Click on a title to see the source code.

jsCode.com
Index of JavaScripts with categories including Alerts and Prompts, Background Effects, Email Related, Form Related, Images and Slide Shows, Links and Buttons, Menus and Navigation, Mouse Tricks and many more.

JavaScript for the World Wide Web Script Examples
This page gives you access to all of the scripts in the book, listed by chapter and task names.