finding the position of an array index

[brendanb]

i was wondering if you have an array value, can you find what number it is in the array's order. For example,

letters=new Array("a","b","c","d");
cnumber=letters.position["c"]
trace(cnumber);

so that cnumber=2. How would I go about doing something like this?

-Brendan

[tg]

this code was from our library section. its by Roland Levy.

Array.prototype.getPos = function(item){
        for(i=0; i<this.length; ++i) {
                if (this[i] == item) { return i; }
        }
        return null;
};

[tg]

useage would be:
trace(letters.getPos("c"));

[BluegillMedia]

This doesn't work for me in CS2, neither did indexOf. I am sure it is easy to just have it tell you what position a string is within an array, but none of these seem to work. Any ideas?

Originally Posted by brendanb

i was wondering if you have an array value, can you find what number it is in the array's order. For example,

letters=new Array("a","b","c","d");
cnumber=letters.position["c"]
trace(cnumber);

so that cnumber=2. How would I go about doing something like this?

-Brendan

[CyanBlue]

So, you are saying that the above code does not work on CS2/AS2???

What do you get when you create a new FLA, paste the code and test movie???

//
Array.prototype.getPos = function (item)
{
    for (i = 0; i < this.length; ++i)
    {
        if (this[i] == item)
        {
            return i;
        }
    }
    return null;
};

letters = new Array("a", "b", "c", "d");
trace(letters.getPos("c"));

[tacos]

Works fine with MX2004, as I guess it would with FlashMX.

[BluegillMedia]

sorry i meant to say AS2

[BluegillMedia]

I ended up having to use this (which i found on here, but added the 'whicharray' being passed):

_root.findPos = function(value, whicharray) {
	var pos;
	for (var i = 0; i < ArrayName.length; i++) {
		if (ArrayName[i].toUpperCase() == value.toUpperCase()) {
			pos = i;
			break;
		} else {
			pos = false;
		}
	}
	return pos;
}

[tacos]

MX & MX2004 are only AS2.0.