<form action="https://wa.me/79001234567" method="get" target="_blank">
<input type="text" name="text" placeholder="Ваше имя" required>
<input type="tel" name="phone" placeholder="Телефон" required>
<textarea name="message" placeholder="Сообщение"></textarea>
<button type="submit">Отправить в WhatsApp</button>
</form>
function BXIBlockAfterSave($arFields) {
IBlockElementAfterSaveHandler($arFields);
ваш код...
}
$(‘.pass1’).bind(‘input’, function(){
var pass = $(this).val();
$(‘.pass2’).val(pass);
});