10.24
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<p id="demo">ppp</p>
<script>
document.getElementsByid("demo").innerHTML = Date();
</script>
<button type="button"onclick=window.alert('number')>press</button>
</body>
</html>
