JQuery片断：
获取URL参数
（by name :如：?id=123: var id = $.getUrlVar('id');）:
?
/*
$.extend({
?getUrlVars: function(){
? ?var vars = [], hash;
? ?var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
? ?for(var i = 0; i < hashes.length; i++)
? ?{
? ? ?hash = hashes[i].split('=');
? ? ?vars.push(hash[0]);
? ? ?vars[hash[0]] = hash[1];
? ?}
? ?return vars;
?},
?getUrlVar: function(name){
? ?return $.getUrlVars()[name];
?}
});*/