如何从用户输入的电子邮件地址中获取域名，并将其链接到邮箱？

function getEmailDomainLink(email) {
  // 使用正则表达式提取域名部分
  var domain = email.match(/@(.+)/)[1];

  // 根据域名匹配邮箱服务商
  var emailProvider = "";
  if (domain.includes("qq.com")) {
    emailProvider = "https://exmail.qq.com/";
  } else if (domain.includes("163.com")) {
    emailProvider = "https://mail.163.com/";
  } else if (domain.includes("gmail.com")) {
    emailProvider = "https://mail.google.com/";
  }
  // 可以根据需要添加更多的邮箱服务商匹配逻辑

  // 生成邮箱链接
  var emailLink = emailProvider + "cgi-bin/loginpage";

  return emailLink;
}

// 示例用法
var userEmail = "example@qq.com";
var emailLink = getEmailDomainLink(userEmail);
console.log(emailLink);