Septdir

[input-number] input,
[input-number] input:focus,
[input-number] input:hover,
[input-number] input:active {
	-webkit-appearance: textfield;
	-moz-appearance: textfield;
	appearance: textfield;
	padding-right: 42px;
	box-sizing: border-box;
}

Septdir

let request = new XMLHttpRequest(),
	requestUrl = '', // Указываем url запроса
	formData = new FormData(); // Перадаем <form> или просто добавляем ниже через append что нужно

request.open('POST', requestUrl);
request.send(formData);
request.onreadystatechange = function () {
	if (this.readyState === 4 && this.status === 200) {
		let response = false;
		try {

AlekVolsk

<?php

function vd(...$args)
{
    print_r('<pre style="margin:0;padding:20px;font:14px/1.6 Consolas,monospace;' . 
        'background-color:#eee;color:#333">===<br>');
    foreach ($args as $i => $context) {
        if ($i > 0) {
            print_r('<br>===<br><br>');
        }