Sử dụng innerHTML trong JavaScript
http://sinhviencntt.net/hoc-javascript-bai-6-cac-ham-xuat-du-lieu-trong-javascript/
by sinhviencntt
HTML
<!DOCTYPE html>
<html>
<body>
<h1>Hello JavaScript</h1>
<p id="webInfo"></p>
<script>
document.getElementById("webInfo").innerHTML = "SinhVienCNTT.Net";
</script>
</body>
</html>