Prototype ¬ Detail

author: black [+], Submitted: 07.16.03 3a

/******************************** Array.prototype.join_2 *************************************

				Flashed by black
									
Description:	This function could be regarded as extension of built-in join method.
		It also returns a string which contains all elements with a delimiter
		between every two of them. 
		Unlike join method you could set an omission option which will cause
		omitting the delimiter when an element found to be equal with it.

**********************************************************************************************/
Array.prototype.join_2 = function(delimiter, omission)
{
	var len = this.length;
	var result = "";
	for (var i=0; i<len; i++)
	{
		result += (this[i] != omission) ? this[i] + ((i != len - 1) ? delimiter : "") : "";
	}
	return result;
}

usage

[b]
you could set an omission option which will cause omitting 
the delimiter when an element found to be equal with it.
[/b]
for example:
// omitting inserting the delimiter if any element is empty~
arr = ["a", "b", "", "d"];
var result = arr.join_2("-", "");
trace(result);