multidimensional arrays in javascript (resolved)

**tr0n** · Jul 26th, 2002, 07:32 AM

i know that to create multidimensional arrays in javascript you have to create an array of arrays, seeing as it doesn't support them properly. so, if i wanted to create a 4x500 array like this:

Code:

Col0    Col1    Col2    Col3
Row0    Row0    Row0    Row0
Row1    Row1    Row1    Row1
Row2    Row2    Row2    Row2
....    ....    ....    ....
Row499  Row499  Row499  Row499

would i have to do this:

Code:

var arrStuff = new Array(new Array(3), new Array(3), new Array(3), new Array(3)...500 times)

if so, bugger that!

**bsw2112** · Jul 26th, 2002, 02:14 PM

maybe you can do something like this

Code:

<html><head>

<script>

function createArray() 
{
	var arrStuff = new Array();
	for (i=0;i<500;i++)
	{
		arrStuff[i] = new Array();
	}
	//populate
	
	for (i=0;i<500;i++)
	{
		for (x=0;x<4;x++)
		{
			arrStuff[i][x] = "hello"
		}
	}
	alert(arrStuff[50][3]);
}
</script>
</head>
<body>
<a href ="#" onClick="createArray()">click</a>
</body>
</html>

i am not sure if the logic is correct

regards

bsw2112

**tr0n** · Jul 29th, 2002, 03:24 AM

thanks, i'll try playing around with that

**progressive** · Jul 29th, 2002, 07:46 AM

Why can't you have an array
like:-

my_array = new Array(new Array(499), new Array(499), new Array(499), new Array(499))

visualised like:

row0, 0 - 499
row1, 0 - 499
row2, 0 - 499
row3, 0-499

**tr0n** · Jul 29th, 2002, 10:34 AM

yeah, i tried that, but that ended up creating an array like this:

row0,0 row0,1 row0,2 row0,3.....row0,499
row1,0 row1,1 row1,2 row1,3.....row1,499

rather than

row0,0 row0,1 row0,2 row0,3
row1,0 row1,1 row1,2 row1,3
...
row499,0 row499,1 row499,2 row499 3

**progressive** · Jul 29th, 2002, 10:38 AM

Ok, I undertsand now what you where trying to do, after helping you with your other thread !

How did you get on with Math.round ?

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