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JavaScript can be placed in an HTML file in several ways:
- Inline: JavaScript code can be included directly in an HTML element using the “onclick”, “onload”, or other similar attributes. For example:
<button onclick="alert('Hello World')">Click me!</button> <script> console.log("This script is placed inline."); </script>
- Internal: JavaScript code can be included within the
<head>
or<body>
section of an HTML file using the<script>
element. For example:<html> <head> <title>My Web Page</title> <script> console.log("This script is placed internally in the head section."); </script> </head> <body> <h1>Hello World</h1> <script> console.log("This script is placed internally in the body section."); </script> </body> </html>
- External: JavaScript code can be included in an external file and then linked to the HTML file using the
<script>
element. This is the recommended approach for larger scripts that are reused across multiple pages. For example:<html> <head> <title>My Web Page</title> <script src="myScript.js"></script> </head> <body> <h1>Hello World</h1> <script src="myOtherScript.js"></script> </body> </html>
It is generally recommended to place JavaScript code at the bottom of the <body>
section to improve the page’s loading speed. However, the exact placement of the script depends on the specific needs and requirements of the web page.