Атрибут formnovalidate

<button formnovalidate>...</button>

<!DOCTYPE html>
<html lang='ru'>
<head>
<meta charset='UTF-8'>
<meta name='viewport' content='width=device-width, initial-scale=1.0'>
<title>Document</title>
</head>
<body>
<form id='one-form'><input type='text' placeholder='Имя' name='info'></form>
<button form='one-form' formaction='/html/result-send' formmethod='get' formenctype='application/x-www-form-urlencoded' formnovalidate>Отправить</button>
</body>
</html>