HTML | <script> src Attribute

HTML is the markup language used to create web pages. One of the most important elements in HTML is the <script> tag, which is used to define scripting languages like JavaScript that add interactivity and functionality to a web page. The src attribute is an important attribute of the <script> tag that tells the browser where to find the JavaScript file.

Definition

The src attribute of the <script> tag specifies the URL of the external JavaScript file that should be applied to the HTML document. The browser loads the file from the specified URL and executes it. If the src attribute is used, the <script> tag must not have any code inside it.

Here's an example of how to use the src attribute:

<script src="myscript.js"></script>

Benefits

The src attribute makes it easy to reuse JavaScript code. Instead of having to copy and paste code to each HTML file that needs it, the code can be placed in a separate file and included using the src attribute. This makes the code more manageable and easier to update.

Using an external script also provides faster page load times. Instead of the browser having to download the JavaScript code every time a page is loaded, the code is cached on the user's machine after the first download. This means that subsequent loads of the same page will be much faster.

Best Practices

When using the src attribute, it's important to specify the correct path to the JavaScript file. If the path is incorrect, the browser will not be able to find the file and the code will not execute. It's also important to use the correct file extension (.js) and to ensure that the file is saved in the correct folder.

It's also best practice to include the async or defer attribute along with the src attribute. These attributes tell the browser how to load and execute the script. async loads the script asynchronously, allowing the rest of the page to load while the script is still downloading. defer loads the script after the page has finished loading, improving performance.

Conclusion

In conclusion, the src attribute is an essential part of the <script> tag in HTML. It allows web developers to add interactivity, functionality and reuse code across web pages. By including an external JavaScript file using the src attribute, web developers can also speed up page load times and improve the performance of their web pages.

Markdown code:

# HTML | `<script>` `src` Attribute

HTML is the markup language used to create web pages. One of the most important elements in HTML is the `<script>` tag, which is used to define scripting languages like JavaScript that add interactivity and functionality to a web page. The `src` attribute is an important attribute of the `<script>` tag that tells the browser where to find the JavaScript file.

## Definition

The `src` attribute of the `<script>` tag specifies the URL of the external JavaScript file that should be applied to the HTML document. The browser loads the file from the specified URL and executes it. If the `src` attribute is used, the `<script>` tag must not have any code inside it.

Here's an example of how to use the `src` attribute:

## Benefits

The `src` attribute makes it easy to reuse JavaScript code. Instead of having to copy and paste code to each HTML file that needs it, the code can be placed in a separate file and included using the `src` attribute. This makes the code more manageable and easier to update.

Using an external script also provides faster page load times. Instead of the browser having to download the JavaScript code every time a page is loaded, the code is cached on the user's machine after the first download. This means that subsequent loads of the same page will be much faster.

## Best Practices

When using the `src` attribute, it's important to specify the correct path to the JavaScript file. If the path is incorrect, the browser will not be able to find the file and the code will not execute. It's also important to use the correct file extension (.js) and to ensure that the file is saved in the correct folder.

It's also best practice to include the `async` or `defer` attribute along with the `src` attribute. These attributes tell the browser how to load and execute the script. `async` loads the script asynchronously, allowing the rest of the page to load while the script is still downloading. `defer` loads the script after the page has finished loading, improving performance.

## Conclusion

In conclusion, the `src` attribute is an essential part of the `<script>` tag in HTML. It allows web developers to add interactivity, functionality and reuse code across web pages. By including an external JavaScript file using the `src` attribute, web developers can also speed up page load times and improve the performance of their web pages.