setInterval() test
by supertrue
HTML
<div id="box">Box content</div>
<a href="#">Stop timer</a>
<a href="#" id="test">Test</a>
JavaScript
var bla = setInterval(function(){ $('#box').html(function(){ return $('#box').html()+' .'; })}, 500);
$('a').click(function(){clearInterval(bla);});
$('#test').click(function(){$('#box').html('Does this stop the timer?')})