电子邮件 ID 的 JavaScript 验证

function validateEmail(email) {
  const re = /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
  return re.test(String(email).toLowerCase());
}

const email = "example@example.com";
if (validateEmail(email)) {
  console.log("Valid email address");
} else {
  console.log("Invalid email address");
}