three handy Array functions: pull(), insert(), replace() 2

[jemminger]

i don't think equivalent functions exist in core js, so i created these for convenience:

Array.prototype.pull = function (arg) {
	//  pulls an element out of an array, returns the single element.
	//  array.length becomes one less.
	//  may pass the index or value of element to remove
	var oEl, tmp;

	if (typeof arg == "number") {
		oEl = this[arg];
		tmp = this.slice(0,arg).concat(this.slice(arg + 1));
	}
	else if (typeof arg == "string") {
		for (var x = 0; x < this.length; x++) {
			if (this[x] == arg) {
				oEl = this[x];
				tmp = this.slice(0,x).concat(this.slice(x + 1));
				break;
			}
		}
	}
	if (typeof oEl != &quot;undefined&quot;) {
		this.length = 0;
		for (var x = 0; x < tmp.length; x++) 
			this[x] = tmp[x];
		return oEl;
	}
	else return null;
}

Array.prototype.replace = function (id, val) {
	//  replaces the element in Array at index &quot;id&quot; with value &quot;val&quot;
	var tmp = this.slice(0,id).concat(val, this.slice(id+1));
	this.length = 0;
	for (var x = 0; x < tmp.length; x++) {
		this[x] = tmp[x];
	}
	return this;
}

Array.prototype.insert = function (id, val) {
	//  inserts value &quot;val&quot; into Array at index &quot;id&quot;
	//  Array.length increases by one
	tmp = this.slice(0,id).concat(val,this.slice(id));
	this.length = 0;
	for (var x = 0; x < tmp.length; x++) {
		this[x] = tmp[x];
	}
	return this;
}

use them like so:
[tt]
var array1 = [0,1,2,3,4];
alert("pull(2) returns: " + array1.pull(2));
alert("array1 now == [" + array1 + "]"
alert("insert(2,2) returns: " + array1.insert(2,2));
alert("replace(2, \"two\&quot returns: " + array1.replace(2, "two&quot);
[/tt]
=========================================================
while (!succeed) try();
-jeff

 

[gph1]

hey those are real handy, thanks jemminger

 

[xutopia]

deserves a star!

Gary

http://www.xutopia.com

Haran
==========================

 

[gph1]

oops, forgot the star.