Below is some of its advanced features: There is an important note that the input must be revalidated when the user choose another country from the drop list.Unfortunately, intl-tel-input doesn't provide an event or callback that is executed after choosing a country.
This example helps you validate an international phone number by using a different approach.
validate Email ( ) Next we want to see if the email address the user entered is real.
This means that the input data must contain at least an @ sign and a dot (.).
For the majority of your users, Java Script form validation will save a lot of time up front, but double-checking the data on the server remains necessary, in case the user has turned Java Script off.
Form data that typically are checked by a Java Script could be: validate Form On Submit ( ) This is a main function that calls a series of subfunctions, each of which checks a single form element for compliance.
If its not blank, the function returns an empty string.