does this jQuery code snippet cause any memory leak?

Question

I am wondering if the following jquery code causes any memory leak:

$( function() {           
  var parent=$('table#mytable tbody').get(0);
  $('tr:last', parent).click(function(){...});
});

For my understanding, $('tr:last', parent) is the last row which is the DOM object, but in the anonymous function, the closure has this DOM object in scope, so there is a circular reference between DOM and js objects.

But if it really has leak, then I can see there are many such kind of code in the popular book "jQuery in Action" published by Manning. It is harmful "best practice" in jQuery coding?

But i don't know if my understanding is correct. I hope your comments and corrections. Thanks!

Answer 1

This code will cause memory leak in internet explorer 6 and internet explorer 7 not in other browser please refer these aritcles by Douglas Crockford and IBM Devloper Site

Answer 2

IE is leak prone. You can test your code for leaks in IE with Microsofts javascript memory leak detector.

Firefox can leak too. This article explains why. There is also a leak detector plugin for Firefox (haven't tested it yet).