Fun Title Changer

titlechanger.html

<script>
var title = document.title;
var blurMessage = [
  "Please come back! :-( ", 
  "Don't you love me anymore? :-(", 
  "Fancy a cookie? ", 
  "I'm feeling lonely :-( ",
  "I need a hug... ",
  "Just checking my email...",
  "Let's have a pizza party!",
  "Doing a quick FB Live!",
  "Are you Seriously Social?",
  "In Space, no one can hear you scream...",
  "Researching the Meaning of Life",
  "Just connecting to Skynet...",
  "2468 Who do you appreciate?",
  "Fancy a cup of tea?",
  "Nice weather we're having!",
  "Checking my Twitter...",
  "Just updating my tool list",
  "Drinking a cup of coffee...",
  "Was it something I said?",
  "Busy procrastinating..."
];

var intervalTimer = null;
var timeoutTimer = null;

window.addEventListener("blur", function () { 
   intervalTimer = setInterval(function() {
     var rand = Math.floor((Math.random() * blurMessage.length));
     document.title = blurMessage[rand];
     timeoutTimer = setTimeout(function() {
       document.title = title;
     },5000);
   },12000);
});

window.addEventListener("focus", function(){ 
  clearInterval(intervalTimer);
  clearTimeout(timeoutTimer);
  document.title = title; 
});
</script>