jquery-tools

You can check out this solution by AJ. It’s pretty straightforward, just copy and paste the following lines of code. jQuery.browser = {}; (function () { jQuery.browser.msie = false; jQuery.browser.version = 0; if (navigator.userAgent.match(/MSIE ([0-9]+)\./)) { jQuery.browser.msie = true; jQuery.browser.version = RegExp.$1; } })(); Reference: $.browser on jQuery 1.9.x for legacy IE detection