add alternating classes to existing jquery object -


i know can following:

$('#mytable').find('tr:odd').removeclass('even'); $('#mytable').find('tr:even').addclass('even');

what if have $('#mytable').find('tr'). how efficiently add alternating classes?

filter() works selector argument using function argument 

var $rows = $('#mytable tr');//cache rows // specific class of rows $rows.filter('.even').dosomething().dosomethingelse()

for specific case, do:

$(function() {   var $rows = $('table tr'); //cache rows   // specific class of rows   $rows.removeclass('even').filter(':even').addclass('even') })

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