Get computed Height of an HTML Element

Get computed Width of an HTML Element

check if your browser/javascript supports Ajax.
For this we can use prototype's getTransport method.

Format fractional digits in a numbe

To debug javascript code we use alert() whereever needed and it irritates you while alerts values inside a loop and other places where more alerts are being shown and you have to press the ok button to pass / proceed on.
here is a simple way to get rid of the alerts dialogs and get the values outputed into another debug window.

Trim , Left trim (ltrim) and Right Trim (rtrim) in javascript

A simple Tooltip for you web pages with minimal code.
Images , Text and HTML code can be shown inside the tootip

Add dragging to your div elements. just adding class="drag" to the div element will make it draggable.

Here i'm adding an example for a draggable dialog box

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.