Imrpoving Array Compare

programming flash
1

I’m trying to figure out how to determine if the 2nd array contains the same number of items, and all correct, as the first array:


//For my purposes, if the user selects answer "B" they get an incorrect response
//but if they don't select "A", "C" and "D" together, they also get an incorrect response
// Need to know which item of arrayA is missing from arrayB

Array.prototype.filter = function(arr) {
    var incorrect:String = "B";
    var mismatchArray:Array = [];
    var tempArray = arr.concat();
    if (arrayA == tempArray) {
        //trace(tempArray); // not working
    }
    for (var i:Number = 0; i < arr.length; i++) {
        var exists:Boolean = false;
        for (var ii = 0; ii < this.length; ii++) {
            if (arr* == this[ii]) {
                trace(arr* + " choice is correct");
                exists = true;
                break;
            }
            if (arrayA.length == arr.length) {
                trace("Same number of answers");
                // Need to know if they are also all correct choices
            }
        }
        if (exists == false) {
            mismatchArray.push(arr*);
            trace(mismatchArray + " is the item not in arrayA");
        }
    }
    return mismatchArray;
};

var arrayA = ["A", "C", "D"];
var arrayB = ["B", "C"];

var difference:String = arrayA.filter(arrayB);
//trace(difference);