Untitled

<html>
<title> Age calculator</title>
<body>
<h1>agecalculator</h1>
<input type="text"   name="age" id="age">

<input type="button"    value="submit"    id="age"      onClick =agecalculator(document.getElementByID('age').value)>
< script>
function agecalculator(age){
var age = 28;
var maxAge = 100;
var numPerDay = 2;
var totalNeeded = (numPerDay * 365) * (maxAge - age);
var message = 'You will need ' + totalNeeded + ' cups of tea to last you until the ripe old age of ' + maxAge;
console.log(message);
}
</script>


</body>
</html?