What would you call that pattern for entering phone numbers?

1. Which type of input validation applies to a phone number?
2. What is the format of a phone number?
3. How to use pattern for phone number in HTML?
4. What is the input type for phone number in HTML?

Which type of input validation applies to a phone number?

<input> elements of type tel are used to let the user enter and edit a telephone number.

What is the format of a phone number?

North American phone numbers

To format phone numbers in the US, Canada, and other NANP (North American Numbering Plan) countries, enclose the area code in parentheses followed by a nonbreaking space, and then hyphenate the three-digit exchange code with the four-digit number.

How to use pattern for phone number in HTML?

^[789]\d9,9$

What is the input type for phone number in HTML?

The <input type="tel"> defines a field for entering a telephone number.