Is there an indexOf in javascript to search an array with custom compare function

Question

I need the index of the first value in the array, that matches a custom compare function.

The very nice underscorej has a \"find\" function that returns the

Answer 1

using underscore I came up with something copied from their find implementation using _.any:

findIndex = function (obj, iterator, context) {
    var idx;
    _.any(obj, function (value, index, list) {
        if (iterator.call(context, value, index, list)) {
            idx = index;
            return true;
        }
    });
    return idx;
};

What do you think - do you have any better solutions?