Validate email with jQuery and my own hack

// validate email function, after function other code relative to its use
// 

function validateEmail(x)
{
var tld="";
console.log(x);
var splitAt = x.split("@");
if(!splitAt[1]) {return false;}
var username = splitAt[0];
var domainTLD = splitAt[1].split(".");
var domain=domainTLD[0];
for(var i=1;i<5;i++) {
   if(domainTLD[i]) { console.log(i +" "+ domainTLD[i]); tld=domainTLD[i] ;}
}
var usernameLength = username.length;
var domainLength = domain.length;
var tldLength = tld.length;
msg=username;
console.log(msg);
msg=domain;
console.log(msg);
msg=tld;
console.log(msg);
msg=usernameLength;
console.log(msg);
msg=domainLength;
console.log(msg);
msg=tldLength;
console.log(msg);
if ( tldLength < 3 || tldLength > 3 || domainLength < 2 || usernameLength < 1 || /\d/.test(tld) )
  {
  console.log(x + " not a valid e-mail address");
  return false;
  } 
else {
  return true;
     }
}

// just some vars not pertinent to email validation
var timedFade = 1000;
var msg="";

// document ready code block below
 
$(document).ready(function(){
msg="document.ready"; console.log(msg); msg="";

$( "#email" ).blur(function() {
var email=$( "#email" ).val();
console.log(email);
 if (validateEmail(email)) { 
  console.log("good email");  
  $("#email-status-message").text("");
  $("#email-status-message").fadeOut(timedFade); 
       } 
else { 
  console.log("bad email"); 
  $("#email-status-message").text("please enter valid email");  
  $("#email-status-message").fadeIn(timedFade); 
 }
});


})