Authenticate Phone Number Field For Free

Mobile Number validation criteria: The first digit should contain numbers between 6 to 9. The rest 9 digit can contain any number between 0 to 9. The mobile number can have 11 digits also by including 0 at the starting. The mobile number can be of 12 digits also by including 91 at the starting.

Phone authentication allows users to sign in to Firebase using their phone as the authenticator. An SMS message is sent to the user (using the provided phone number) containing a unique code. Once the code has been authorized, the user is able to sign into Firebase.

As you can see, the type attribute has been set to ?tel.? Also, it has a pattern attribute, which takes a regular expression: "[0-9]{3}-[0-9]{3}-[0-9]{4}". It will be used during the phone number validation. By using the HTML5 ?tel? input, you can do phone number validation with shorter code.

What is phone validation and how does it work? Phone number validation is the process of checking if a phone number is accurate. It lets you find out if the phone number you have for a business contact or customer is active and able to receive calls.

Validation rules The number should start with + followed by the country code and then the full number to call. A maximum of 15 digits can be used. For example: +18884628462.

Try it <label for="phone">Enter your phone number:</label> <input type="tel" id="phone" name="phone" pattern="[0-9]{3}-[0-9]{3}-[0-9]{4}" required /> <small>Format: 123-456-7890</small>

HTML Demo: <input type="tel"> <label for="phone">Enter your phone number:</label> <input type="tel" id="phone" name="phone" pattern="[0-9]{3}-[0-9]{3}-[0-9]{4}" required /> <small>Format: 123-456-7890</small>

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