https://www.sbiresta.co.jp/resta/_shared/js/paramquery.js

1$(function(){
2	  var url = new URL(window.location.href);
3	  var urlprmstr = url.searchParams;
4	  var agta ;
5	  var mode ;
6	  var cok ;
7	  if(urlprmstr.get('agta')){
8	       agta = urlprmstr.get('agta');
9	       if( agta.length !== 4){
10	       	agta = '0000';
11	       }
12	  
13		    if(urlprmstr.get('mode')){
14		       mode = urlprmstr.get('mode');
15		    }
16		    cok = "query=agta="+agta;
17	  	    var result = document.cookie.indexOf('ck');
18			if(result !== -1 ){
19			  document.cookie = 'ck=;max-age=0';
20			}
21			document.cookie='ck='+ encodeURIComponent(cok)+';path=/;max-age='+3600*24*30+';';
22	  }
23});