jQuery validate bug with required validation on IE10 in compatibility mode to IE7/IE8

Question

there is a Confirmed bug in IE10 compatibility mode that won\'t be fixed for IE10:

In IE10 in compatibility to IE8
$element.get(0).getAttribute(

Answer 1

In IE10 in compatibility to IE8
element.attributes["required"] is null if the required attribute is missing

In IE10 in compatibility to IE7
element.attributes["required"].value returns "-1" if required attribute exists and "null" otherwise

so updated my fork to the jQuery validate plugin for this fix all details here https://github.com/avipinto/jquery-validation/commit/a22d4c37c3047199bf17a4943e3be352d88d8158