External JS File
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Lecture 161:- External JS File
An external JavaScript file is a file containing JavaScript code that is stored as a separate file from the HTML document. External JavaScript files typically have a .js file extension and can be included in an HTML document using the script tag with a src attribute pointing to the location of the file.
Using an external JavaScript file has several advantages over including JavaScript code directly in an HTML document:
- Separation of concerns: By storing JavaScript code in a separate file, you can keep your code organized and separate it from your HTML content.
- Caching: External JavaScript files can be cached by the browser, which can improve the loading time of your website and reduce bandwidth usage.
- Reusability: JavaScript code stored in an external file can be reused across multiple HTML pages, reducing duplication of code.
- Maintenance: Updating JavaScript code stored in an external file is easier since you only need to update one file rather than multiple HTML files.
To include an external JavaScript file in an HTML document, you can use the following syntax in the head section of your HTML document:
htmlCopy code
<head>
<script src="path/to/your/file.js"></script>
</head>
This will include the JavaScript code in the file located at path/to/your/file.js in your HTML document.
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