On the use of Axios - Codes Helper - Programming Question Answer

On the use of Axios

Today, I submitted the JS using the AJAX that Axios writes and registers. It can send requests normally, but I find that the backend can not accept the username and password information from the frontend at all. How should I fix this BUG? Thank you.
part of the JS code (jQuery):

var captcha_res_ticket = $.cookie("captcha.res.ticket");
var captcha_res_randstr = $.cookie("captcha.res.randstr");
var username = $("-sharpinputUsername").val();
var email = $("-sharpinputEmail").val();
var password = $("-sharpinputPassword").val();
var repassword = $("-sharpinputRepassword").val();
var agree_user_agreement = $("-sharpagree_user_agreement").is(":checked");
var participate_in_the_user_experience_program = $("-sharpparticipate_in_the_user_experience_program").is(":checked");

Axios partial code:

axios({
            url: "/user/user_registration/php/registration.php",
            method: "post",
            timeout: 3000,
            data: {
                captcha_res_ticket: captcha_res_ticket,
                captcha_res_randstr: captcha_res_randstr,
                username: username,
                email: email,
                password: password
            }
        })

Captcha comes from my CAPTCHA API.

const params = new URLSearchParams(); params.append('captcha_res_ticket', captcha_res_ticket); params.append('captcha_res_randstr', captcha_res_randstr); params.append('username', username); params.append('password', password); axios({ url: '/user/user_login/php/login.php', method: 'post', timeout: 1000, data: params })