Pattern for phone input form?

Question

Design patterns

Hello.
There is a form:

<input maxlength="30" type="text" placeholder="[phone]" name="phone" eform="Телефон::1" class="form-control" id="exampleInputEmail1" />

How can I add a pattern to it so that only numbers, spaces and +)(- symbols can be entered
without rigid reference to the number of characters, their location and order?

Answer 1

pattern="\+?[0-9\s\-\(\)]+"

Answer 2

https://codepen.io/vitaly-zdanevich/pen/VLVXaL

Answer 3

There are 4 opening brackets, 5 closing brackets.
On the next line, the same thing.
Remove one closing parenthesis on these lines.