How to use E-mail authentication

This article mainly introduces "how to use E-mail verification". In daily operation, I believe many people have doubts about how to use E-mail verification. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts of "how to use E-mail verification". Next, please follow the editor to study!

E-mail verification

The following function checks whether the data entered conforms to the basic syntax of the e-mail address.

This means that the input data must contain the @ symbol and the period (.). At the same time, @ cannot be the first character of an email address, and at least a period is required after @:

Function validateForm () {

Var x=document.forms ["myForm"] ["email"] .value

Var atpos=x.indexOf ("@")

Var dotpos=x.lastIndexOf (.)

If (atpos