html phone number validation pattern
<input type="text" name="Phone Number" pattern="[7-9]{1}[0-9]{9}" title="Phone number with 7-9 and remaing 9 digit with 0-9">
Source: stackoverflow.com
html form validation for phone numbers
<label for="phone">Enter your phone number:</label> <input type="tel" id="phone" name="phone" pattern="[0-9]{3}-[0-9]{2}-[0-9]{3}">
phone number validation html
How about this? /(7|8|9)\d{9}/ It starts by either looking for 7 or 8 or 9, and then followed by 9 digits.