Simple Loop through array
Loop through array to infinity using javascript modulus
by blowsie
HTML
<div id="btn">Go</div>
CSS
#btn {width:100px; height:30px; background:#000; color:#fff; font: 'Arial' 30px; line-height:30px; text-align:center; margin:30px;}
JavaScript
var i = 0,
abc = ['a', 'b', 'c'];
$("#btn").click(function(){
$(this).text(abc[i % 3]);
i++;
});