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Exercise 4

Create the following folder/file structure:
```
/ex_4
  |-- index.html
  |-- scripts.js
```

Todo

Add the following files to the folder:

index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Hello World</title>
    <script src="./scripts.js"></script>
  </head>
  <body>
    <h1 id="heading"></h1>
  </body>
</html>

scripts.js

window.onload = () => {
  let page = { title: "Hello world" };
  let heading = document.querySelector("h1");
  heading.innerText = page.heading;
};

Run the application using http-server or just open the index.html

Result

Once we start the project it will output the following message on the page Hello world