JavaScript and AJAX

Here is what the explode and implode functions do:

Let's say I have a string:

$some_string = '13:42:43:56';

I want to break down each number into an array called $num_array. in PHP I could just do this:

$num_array = explode(':',$some_string);

The PHP implode function would produce the following:

$num_array[0] = 13
$num_array[1] = 42
$num_array[2] = 43
$num_array[3] = 56

Then let's say I wanted to piece it back into the original string. I could just do this in php:

$some_string = implode(':',$num_array);

Any idea how to accomplish this in javascript? Thanks a lot for your help and time. I really appreciate it.

function explodeArray(item,delimiter) {
tempArray=new Array(1);
var Count=0;
var tempString=new String(item);

while (tempString.indexOf(delimiter)>0) {
tempArray[Count]=tempString.substr(0,tempString.indexOf(delimiter));
tempString=tempString.substr(tempString.indexOf(delimiter)+1,tempString.length-tempString.indexOf(delimiter)+1);
Count=Count+1
}

tempArray[Count]=tempString;
return tempArray;
}

or you could do this

var myString = new String('red,green,blue');
var myArray = myString.split(',');

I still can't seem to figure out how to implode though.

myarray.join(';')
would join elements aof array into string with ; separator

There's no need to explicitly create a String object. This is done automatically.

var myArray = 'red,green,blue'.split(',');