Prototype:
var reportId = event.findElement('tr').identify().match(/\d+/);

jQuery:
var reportId = $(this).closest('tr').attr('id').is(/\d+/);

You can see what I have above. However, in prototype reportId = the closest tr element with an id of digits. In jQuery it returns false.

I realize the .is() returns true or false, my questions is... what can I do to replicate the what Prototype performs.

Thanks