<script>

//添加 cookie

function cp_add_cookie(num){

setCookie("cp_keynum",num,2);

}

//查找

function cp_seek_cookie(){

var cp_keynum=getCookie("cp_keynum");

var find_result = document.getElementById("find_result2");

find_result.innerHTML = "cp_keynum == " + cp_keynum;

}

//设置 cookie 值的函数,创建一个函数用于存储访问者的名字

function setCookie(cname,cvalue,exdays){

    var d = new Date();

    d.setTime(d.getTime()+(exdays*24*60*60*1000));

    var expires = "expires="+d.toGMTString();

    document.cookie = cname+"="+cvalue+"; "+expires;

}

//获取 cookie 值的函数,创建一个函数用户返回指定 cookie 的值

function getCookie(cname){

    var name = cname + "=";

    var ca = document.cookie.split(';');

    for(var i=0; i<ca.length; i++) {

        var c = ca[i].trim();

        if (c.indexOf(name)==0) return c.substring(name.length,c.length);

    }

    return "";

}

</script>

if(typeof(Storage)=="undefined")

{

  document.getElementById("result").innerHTML="对不起，您的浏览器不支持 web 存储。";

}

//保存数据

function save(cp_value){

    var num = new Object;

    num.cp_keynum ="key_num";

    num.cp_num_value = cp_value;

    var str = JSON.stringify(num); // 将对象转换为字符串

    localStorage.setItem(num.cp_keynum,str);

    alert("添加成功");

}

 //查找数据

function find(){

    var cp_keynum = "key_num";

    var str = localStorage.getItem(cp_keynum);

    var find_result = document.getElementById("find_result");

    var num = JSON.parse(str);

    find_result.innerHTML = cp_keynum + "==" + num.cp_num_value;

}  

    function getUrlParam(name){

        //正则表达式过滤

        var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i"); 

        console.log("location.search==="+location.search);

        //substr（1）：从字符串第一个位置中提取一些字符

        console.log("location.search.substr(1)==="+location.search.substr(1));

        //match（）：在字符串内检索与正则表达式匹配的指定值，返回一个数组给r

        console.log("window.location.search.substr(1).match(reg)==="+window.location.search.substr(1).match(reg));

        var r = window.location.search.substr(1).match(reg);

        //获取r数组中下标为2的值；（下标从0开始），用decodeURI（）进行解码

        console.log("decodeURI(r[2])==="+decodeURI(r[2]));

       if (r != null) return decodeURI(r[2]); return null; 

}