Loop through associative array in reverse

Question

I\'m using a javascript associative array (arr) and am using this method to loop through it.

for(var i in arr) {
    var value = arr[i];
    alert(i =\") \"+         


        

Answer 1

Warning: this answer is ancient.

If you're here for a quick fix, kindly refer to the much better answer below.

^{Original answer retained, because reasons. See comments.}

---

Using a temporary array holding the keys in reverse order:

var keys = new Array();

for (var k in arr) {
    keys.unshift(k);
}

for (var c = keys.length, n = 0; n < c; n++) {
   alert(arr[keys[n]]);
}