JavaScript/time_spent.html at master · eliCoding/JavaScript · GitHub

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<!DOCTYPE html>

<htmllang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<metacharset="utf-8" />
<title>Time Spent</title>
<style>
body {
background-color:white;

 }
</style>
<scripttype="text/javascript">
varseconds;
seconds=0;
//create the updateTime() function
functionupdateTime(){
seconds++;
soFar.innerHTML=seconds;
}
//create the startTimer() function
functionstartTimer(){
window.setInterval('updateTime()',1000);
}

functionchangeBG(){
varinputColor=window.prompt("please choose a color: ");
document.body.style.backgroundColor=inputColor;
}

</script>
</head>
<bodyonload="startTimer();changeBG()" >
<p>
 Seconds you have spent viewing this page so far:
<aid="soFar" style="color:#f00; font-size:2em">0</a>
</p>

</body>
</html>