获取地址栏中的参数

$(document).ready(function(){

    var type = getQueryString('type');  

});

function getQueryString(name) { 
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i"); 
    var r = window.location.search.substr(1).match(reg);    
    if (r != null) return decodeURIComponent(r[2]); return null;   
}