JS implementation to obtain from Baidu, Google,soso,sogou keyword methods _javascript skills

This article describes the JS implementation of the acquisition from Baidu, Google,soso,sogou keyword methods. Share to everyone for your reference, specific as follows:

* Can get users, through which keyword access to the page, you can add Sogou,soso, Youdao search engine
/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;

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