What characters are valid for JavaScript variable names?

Question

Which characters can be used for naming a JavaScript variable?

I want to create a small \"extension library\" for my non-JavaScript users here at work (who all seem

Answer 1

Javascript Variables

You can start a variable with any letter, $, or _ character. As long as it doesn't start with a number, you can include numbers as well.

Start: [a-z], $, _

Contain: [a-z], [0-9], $, _

jQuery

You can use _ for your library so that it will stand side-by-side with jQuery. However, there is a configuration you can set so that jQuery will not use $. It will instead use jQuery. To do this, simply set:

jQuery.noConflict();

This page explains how to do this.