[mochikit] Re: index of a value in an array?

[Bob Ippolito]

On Jan 10, 2006, at 6:52 PM, sergio wrote:

looking to do something like this, but i am not sure if there is  
anything like it in javascript.. it does seem pretty mochikit-ish..

var array = new Array (dog, cat, hamster, horse, monkey);

positionAnimal(hamster) = 2; <- this type of functionality..

if value exists in the array, return the index, otherwise, returns  
something else..

It doesn't currently exist in MochiKit.  What you would want is  
something like this (written in just plain javascript):

var find = function (lst, value, start/* = 0 */, /* optional */end) {
        if (typeof(end) == "undefined" || end == null) {
                end = lst.length;
        }
        for (var i = (start || 0); i < end; i++) {
                if (lst[i] == value) {
                        return i;
                }
        }
        return -1;
};

I'll go ahead and make sure this gets into MochiKit 1.2.

-bob