JS代码获取搜索引擎来路关键词

共两款代码：

第一款代码：

var str1="";
var str2= "";
var refer=document.referrer;
var sosuo=refer.split(".")[1];
var grep=null;
var str=null;
var keyword=null;
var skey="xx";
var ykey="";
switch(sosuo){
  case "baidu":
    grep=/wd\=.*\&/i;
    str=refer.match(grep)
    keyword=str.toString().split("=")[1].split("&")[0];
    //console.log(decodeURIComponent(keyword));
 ykey=decodeURIComponent(keyword);
    addCookie('key',decodeURIComponent(keyword),1);
 //alert(decodeURIComponent(keyword));
  break;
  case "google":
    grep=/&q\=.*\&/i;
    str=refer.match(grep)
    keyword=str.toString().split("&")[1].split("=")[1];
    //console.log(decodeURIComponent(keyword));
 ykey=decodeURIComponent(keyword);
    addCookie('key',decodeURIComponent(keyword),1);
  break;
  case "sogou":
    grep=/query\=.*\&/i;
    str=refer.match(grep)
    keyword=str.toString().split("&")[1].split("&")[2];
    //console.log(decodeURIComponent(keyword));
 ykey=decodeURIComponent(keyword);
    addCookie('key',decodeURIComponent(keyword),1);
 //alert(decodeURIComponent(keyword));
  break;
  default:
  addCookie('key','',1);
}
var ckey=(getCookie('key'))
//alert(ckey);
if(ykey.indexOf(skey)>-1)
{
}else
{
}
function deleteCookie(name){
var date=new Date();
date.setTime(date.getTime()-10000);
document.cookie=name+"=v; expires="+date.toGMTString();
}
function getCookie(name){
var strCookie=document.cookie;
var arrCookie=strCookie.split("; ");
for(var i=0;i < arrCookie.length;i++){
var arr=arrCookie[i].split("=");
if(arr[0]==name)return arr[1];
}
return "";
}
function addCookie(name,value,expiresHours){
var cookieString=name+"="+escape(value);
//判断是否设置过期时间
if(expiresHours>0){
var date=new Date();
date.setTime(date.getTime+expiresHours*3600*1000);
cookieString=cookieString+"; expires="+date.toGMTString();
}
document.cookie=cookieString;
}
document.write(ykey);
if(ykey=="")
{}
else
{
 document.write("");
}

 

第二款代码：

function getDomainQuery(url) {
    var d = [];
    var st = url.indexOf('//', 1);
    var _domain = url.substring(st + 1, url.length);
    var et = _domain.indexOf('/', 1);
    d.push(_domain.substring(1, et));
    d.push(_domain.substring(et + 1, url.length));
    return d
}

function route() {
    var eg = [];
    eg.push(['baidu', 'wd']);
    eg.push(['google', 'q']);
    eg.push(['soso', 'w']);
    eg.push(['yodao', 'q']);
    eg.push(['bing', 'q']);
    eg.push(['yahoo', 'q']);
    eg.push(['sogou', 'query']);
    eg.push(['gougou', 'search']);
    eg.push(['360', 'q']);

    var dq = getDomainQuery(document.referrer);

    var keyword=null;
    var grep=null;
    var str=null;

    for(var el in eg){
        var s = eg[el];
        var DandQ=String(s).split(","); //字符分割
        if (dq[0].indexOf(DandQ[0])>0){
            eval("grep=/"+DandQ[1]+"\=.*\&/i;");
            str = dq[1].match(grep);
            keyword = str.toString().split("=")[1].split("&")[0];
            keyword = decodeURIComponent(keyword);
            alert(keyword);
            return false;
        }
    }

}

route();