In the case of data security requirements are not very high, we can directly use js to read and write cookie, which is more convenient.

The code is as follows:

/*
  Function: Save cookies Function
  Parameters: name , cookie Name; value , value
 */
 function SetCookie(name,value){
   var Days = 30*12;  //cookie  Will be saved 1 Year
   var exp = new Date(); // Get the current time
   exp.setTime(exp.getTime() + Days*24*60*60*1000); // Change to milliseconds
   document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
 }
 /*
  Function: Get cookies Function
  Parameters: name , cookie Name
 */
 function getCookie(name){
   var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
   if(arr != null){
  	 return unescape(arr[2]);
   }else{
  	 return null;
   }
 }
 /*
  Function: Delete cookies Function
  Parameters: name , cookie Name
 */

 function delCookie(name){
   var exp = new Date(); // Current time
   exp.setTime(exp.getTime() - 1);
   var cval=getCookie(name);
   if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();
 }