function getURLParameter(name) {
return decodeURIComponent((new RegExp(‘[?|&]‘ + name + ‘=‘ + ‘([^&;]+?)(&|#|;|$)‘).exec(location.search)||[,""])[1].replace(/\+/g, ‘%20‘))||null;
};
var token = getURLParameter("token");
原文：http://www.cnblogs.com/nihaorz/p/5332731.html