Running Javascript in Browser

<script>

Body

hello-body.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>Document</title>
</head>
<body>
  <h1>Running Javascript</h1>
  <script>
    console.log('Hello World!')
  </script>
</body>
</html>

Body (file.js)

hello-body-file.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>Document</title>
</head>
<body>
  <h1>Running Javascript</h1>
  <script src="js/main.js"></script>
</body>
</html>

js/main.js:

console.log('Hello World!')

Head (file.js)

hello-head-file.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>Document</title>
  <script src="js/main.js"></script>
</head>
<body>
  <h1>Running Javascript</h1>
</body>
</html>

onEvents

event-print.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>Document</title>
</head>
<body>
  <h1>Running Javascript</h1>
  <button onclick="window.print()">Print</button>
</body>
</html>

URL (JS)

url-print.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>Document</title>
</head>
<body>
  <h1>Running Javascript</h1>
  <a href="javascript:window.print()">Print</a>
</body>
</html>