Jquery check if array contains duplicate string

Question

How to check if array contains a duplicate string , i have validateArray = [\'sa\',\'sa\',\'yu\'] i have used the following function from SO but same not working for me.

Answer 1

Take a look at this:

function getDistinctArray(arr) {
    var compareArray = new Array();
    if (arr.length > 1) {
        for (i = 0;i < arr.length;i++) {
            if (compareArray.indexOf(arr[i]) == -1) {
                compareArray.push(arr[i]);
            }
        }
    }
    return compareArray;
}

And here is a working fiddle