Adding Randomly chosen class to HTML tag using jQuery

Question

Whet I need to do is in my menu I would like to add one of the classes (listed below) with completely random order every time when function starts (page load)

This is my HTML

<div id="menu">
    <ul>
        <li><a href="#">Home</a></li>
        <li><a href="#">About Us</a></li>
        <li><a href="#">Portfolio</a></li>
        <li><a href="#">Why Us</a></li>
        <li><a href="#">Contact Us</a></li>
    </ul>
</div>

And this is what I would like to have as the result with every time different order of added classes

<div id="menu">
    <ul>
        <li><a href="#" class="li-one" >Home</a></li>
        <li><a href="#" class="li-five">About Us</a></li>
        <li><a href="#" class="li-three">Portfolio</a></li>
        <li><a href="#" class="li-two">Why Us</a></li>
        <li><a href="#" class="li-four">Contact Us</a></li>
    </ul>
 </div>

Below I have listed all the classes.

.li-one .li-two .li-three .li-four .li-five

I have spent lost hour trying to figure that out with no results

Thank you very much for your help in advance

Answer 1

Something like the following:

function randOrd() {
    return (Math.round(Math.random())-0.5); 
}

$(document).ready(function() {
    var klasses = [ 'li-one', 'li-two', 'li-three', 'li-four', 'li-five' ];
    klasses.sort( randOrd );
    $('#menu ul li a').each(function(i, val) {
        $(this).addClass(klasses[i]);
    });
});