How to check the phone number field on 1c bitrix?

Question

PHP

Good afternoon!
The site has a registration form, the phone field is formed using type="text"

<input size="30" type="text" name="REGISTER[<?=$FIELD?>]" value="<?=$arResult["VALUES"][$FIELD]?>" class="bx-auth-input"/>

How to check for a phone number in the correct format, I did it through jquery.maskedinput
, it sometimes works, sometimes it doesn’t
.

Answer 1

1) Register js-extension in Bitrix
2) Declare your authorization and registration
components 3) Connect your js-ext to component_epilog.php
4) Add validation code to script.js