Function: array_diff_uassoc version 9

Function:
Description: Returns the entries of arr1 that have values which are not present in any of the others arguments but do additional checks whether the keys are equal. Elements are compared by user supplied function.
Version:
Status: latest
Date: 2011-12-20 04:32
Summary: Import from phpjs.
Programmer: jj5
Code
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function array_diff_uassoc (arr1) {
    // http://jsphp.co/jsphp/fn/view/array_diff_uassoc
    // +   original by: Brett Zamir (http://brett-zamir.me)
    // *     example 1: $array1 = {a: 'green', b: 'brown', c: 'blue', 0: 'red'}
    // *     example 1: $array2 = {a: 'GREEN', B: 'brown', 0: 'yellow', 1: 'red'}
    // *     example 1: array_diff_uassoc($array1, $array2, function (key1, key2){ return (key1 == key2 ? 0 : (key1 > key2 ? 1 : -1)); });
    // *     returns 1: {b: 'brown', c: 'blue', 0: 'red'}
    var retArr = {},
        arglm1 = arguments.length - 1,
        cb = arguments[arglm1],
        arr = {},
        i = 1,
        k1 = '',
        k = '';
    cb = (typeof cb === 'string') ? this.window[cb] : (Object.prototype.toString.call(cb) === '[object Array]') ? this.window[cb[0]][cb[1]] : cb;

    arr1keys: for (k1 in arr1) {
        for (i = 1; i < arglm1; i++) {
            arr = arguments[i];
            for (k in arr) {
                if (arr[k] === arr1[k1] && cb(k, k1) === 0) {
                    // If it reaches here, it was found in at least one array, so try next value
                    continue arr1keys;
                }
            }
            retArr[k1] = arr1[k1];
        }
    }

    return retArr;
}
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