Sort an array by a key value

sortArrayByKey.js

/**
 *  Sort an array by a key value
 *
 *  @param   array   array  The array that needs to be sorted
 *  @param   string  key    The value of the key to sort by
 *  @return  array          The sorted array
 */
function sortArrayByKey(array, key) {
    return array.sort(function(a, b) {
        var x = a[key];
        var y = b[key];
        return ((x < y) ? -1 : ((x > y) ? 1 : 0));
    });
}