Find and replace a string or character(s) inside another string

simple find and replace string

Find min and max of an array

This will convert the time from number of seconds to HH:MM format

This function will add all the elements in an array and return total(sum)

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.