The JavaScript cheat sheet is designed to act as a reminder and reference sheet, listing methods and functions of JavaScript. It includes reference material for regular expressions in JavaScript, as well as a short guide to the XMLHttpRequest object. A description of what is on the cheat sheet follows, or if you are impatient, you can go straight to the full size JavaScript cheat sheet.i think is very useful for web designers and web developers. Enjot it !

JavaScript Cheat Sheet

The JavaScript cheat sheet is designed to act as a reminder and reference sheet, listing methods and functions of JavaScript. It includes reference material for regular expressions in JavaScript, as well as a short guide to the XMLHttpRequest object. A description of what is on the cheat sheet follows, or if you are impatient, you can go straight to the full size JavaScript cheat sheet.

jQuery 1.3 Cheat Sheet
This cheat sheet is a quick reference to functions and properties in the jQuery 1.3 library.

jQuery Selectors Cheat Sheet

jQuery selectors are one of the most important aspects of the jQuery library. These selectors use familiar CSS syntax to allow page authors to quickly and easily identify any set of page elements to operate upon with the jQuery library methods. Understanding jQuery selectors is the key to using the jQuery library most effectively. This reference card puts the power of jQuery selectors at your very fingertips.

MooTools 1.2 Cheat Sheet

It includes cheat sheet like documentation for Core, Native, Class, Element, Utilities and Request.

JavaScript Quick Reference Card

This quick reference card summarizes the core features of JavaScript – naming conventions, variable types, control structures, intrinsic functions etc. We have deliberately chosen not to discuss features that are not supported by all three browsers – Firefox 1.5+,Opera 9.1+ and IE6+.

Dojo 1.3 Base API Cheat Sheet

Prototype 1.6.0.2 Cheat Sheet