How to pass a value from form or input on one page to form or input? on another page

problem description

I want to add the values of these fields from page a, click the jump button to page b, and fill in the values into the input of the three same fields on page b and page a. The three fields on page a have fields in the database table a, while the three fields on page b have no fields in database b, just to show the front end how to operate them, using EASYUI MVC

the environmental background of the problems and what methods you have tried

related codes

/ / Please paste the code text below (do not replace the code with pictures)

what result do you expect? What is the error message actually seen?

Form mvc ajax easyui javascript

Mar.31,2021

1. Pass
2 through the address bar parameter. Through localstorage,sessionStorage and other technologies
remember to carry parameters before jumping

//https://mail.qq.com/cgi-bin/frame_html?sid=EJs87usyg4jSZy51&t=newwin_frame&url=%2fcgi-bin%2freadmail%3fmailid%3dZC1927-zkXnZWC5bWY8MnsgobyyP87%26need_textcontent%3dtrue%26s%3dnotify%26newwin%3Dtrue%26t%3dreadmail&r=9f2c2de4f4d1a5acaa0109db8fadf7cd

function getQueryString(name) {
var reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)', 'i');
var r = window.location.search.substr(1).match(reg);
if (r != null) {
return unescape(r[2]);
}
return null;
}

getQueryString('sid')
"EJs87usyg4jSZy51"

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e3f1b9-432e6.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e3f1b9-432e6.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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