in Javascript
The Javascript email validation function below will return true if email is correct, false – otherwise.
There is only one argument to this validation function its email address.
Source code for webtoolkit.emailvalidation.js
function validEmail(email){ var emailReg = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/; return emailReg.test(email); }