JS_百度,Google,soso,sogou关键词获取

/*可获取用户,通过哪个关键词访问该页,可自行添加SOGOU,SOSO,有道等搜索引擎*/

var refer=document.referrer; 

var sosuo=refer.split(".")[1];

var grep=null;

var str=null;

var keyword=null;

switch(sosuo){



  case "baidu":

    grep=/wd\=.*\&/i;

    str=refer.match(grep)

    keyword=str.toString().split("=")[1].split("&")[0];

    console.log(decodeURIComponent(keyword));

  break;

  

  case "google":

    grep=/&q\=.*\&/i;

    str=refer.match(grep)

    keyword=str.toString().split("&")[1].split("=")[1];

    console.log(decodeURIComponent(keyword));

  break;



}