JS implementation of methods to obtain keywords from Baidu, Google, soso, sogou

The example in this article describes the method of JS implementation to obtain keywords from Baidu, Google, soso, and sogou. Share it with everyone for your reference, the details are as follows:

 /*Get the user, which keyword is used to access the page, and you can add SOGOU, SOSO, Youdao and other search engines by yourself*/
 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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