JQuery 'on' vs. 'live'

Question

I have a scenario where JQuery \'on\' & \'live\' do not perform the same. Perhaps someone can point out why. I am using JQuery 1.7.2 with my project and in this build,

Answer 1

One does not simply replace .live with .on.

$("a.listajax").live('click', function(e))

Is equivalent to:

$(document).on('click', 'a.listajax', function(e))

Important

If there's a common ancestor for all your .listajax anchors that will not be removed from the DOM, you should use that (the deepest one possible) instead of document; this will improve performance.