make array from "difference" between two arrays

Posted on 2012-03-22
Medium Priority
Last Modified: 2012-03-22
I have two arrays. One has many number. One has only ten. All the numbers that exist in the smaller array also exist in the smaller array. I'm trying to make an array of the numbers that do not exist in the smaller array.

var unusedArr = [];
for (x in idsToFade) {

    for (y in cleanIdArray) {

        if (idsToFade[x] != cleanIdArray[y]) {



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My problem is that unusedArr gets filled with the values 10 times, because that is the length of the array i'm basing the first for in loop on (idsToFade).

I feel I am missing something pretty basic. Much appreciative for any help!
Question by:hibbsusan
LVL 83

Accepted Solution

leakim971 earned 2000 total points
ID: 37755130

Author Closing Comment

ID: 37755167
i looked for so long for something exactly like that. Thank you!

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