Function for removing duplicate values from a javascript array

removeDupes.js

// This is a simple javascript function for removing duplicate values from an array.
function removeDupes(arr) {
    var nonDupes = [];
    arr.forEach(function(value) {
        if (nonDupes.indexOf(value) == -1) {
            nonDupes.push(value);
        }
    });
    
    return nonDupes;
}