js获取url后面的参数

$(function () {
    //window.location.search.substring(1)   截取问号之后的字符串

    //比如有如下链接"./page2.html?name=" + name + "&age=" + age
    //截取之后  name=lucy&age=20
 
   var str = window.location.search.substring(1);
    var array = str.split("&");
    var params = {};
    for (var i =0; i < array.length; i++) {
        var tmp = array[i].split("=");
        params[tmp[0]] = tmp[1];
    }
})