The basic framework of an Ajax-enabled web page. The following JavaScript shows how to send a request for an XML file and how to receive that request. Of course, in a real life scenario, you'll have to implement better error trapping and actually do something with the XML that gets returned.

If you're an IE user you may have noticed that when you hover on a medium to large sized image, a toolbar appears in the corner of the image. It's basically useless as it accomplishes nothing that can't be done with a right-click.

Luckily, Microsoft has included a way for webmasters to disable this function.

Gets the rightmost substring, of the specified length, from a String object.

Gets a regular expression that'll search for any regexp pattern specified in the parameters.

Gives you the ability to dynamically include a CSS file at any time in your HTML page using Javascript.

Here's a library to manage CSS class names on DOM elements.

This code will remove specified no of elements in an js array , from the beggining of it.

This code snippet will validate an IP Address (IP v4).
return true if the ip address is valid. Else false.

Alternate row coloring using javascript

check if a function exists in your code using javascript before calling it.