@H_301_0@本文实例讲述了javascript验证邮件地址和MX记录的方法。分享给大家供大家参考。具体如下：

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// Tests for a valid email address and optionally tests for valid MX records,too.
function is_valid_email($email,$test_mx = false)
{
if(eregi("^([_a-z0-9-]+)(.[_a-z0-9-]+)@([a-z0-9-]+)(.[a-z0-9-]+)(.[a-z]{2,4})$",$email))
if($test_mx)
{
list($username,$domain) = split("@",$email);
return getmxrr($domain,$mxrecords);
}
else
return true;
else
return false;
}