1<!DOCTYPE html>
2<html lang="en">
3 <head>
4 <meta charset="UTF-8" />
5 <meta http-equiv="X-UA-Compatible" content="IE=edge" />
6 <title>Learn JavaScript</title>
7 <script>
8 // Code One
9 document.getElementById("el").style.color = "red";
10 </script>
11 /* the Code One does not work because it don't
12 find which thr are loading*/
13 <script>
14 // Code Two
15 window.onload = function () {
16 document.getElementById("el").style.color = "red";
17 };
18 </script>
19 </head>
20 <body>
21 <h1 id="el">Page Title</h1>
22 <script>
23 // Code Three
24 document.getElementById("el").style.color = "red";
25 </script>
26 </body>
27</html>