Way of Using JavaScript | Types of Using JavaScript | Inline-Internal-External JavaScript Tutorial

Way of Using JavaScript | Types of Using JavaScript | Inline-Internal-External JavaScript Tutorial

Way of Using JavaScript:

1. Inline JavaScript — Between the tag of html
2. Internal JavaScript — Between the tag of html
3. External JavaScript — In .js file

Inline JavaScript :

When a script tag is used in the HTML file, it is called inlining. This means no external JS file is used instead JavaScript is put into an HTML file.

When JavaScript was written within the html element using attributes related to events of the element then it is called as inline JavaScript.

Benefits of Inline JavaScript:

This is extremely advantageous as it can save the web browser round trips to the server. This is because it no longer requires an external file to download from the server-side.

Inline scripts are often seen in places such as Google Analytics tracking code, site verification, and introducing and setting proprietary and external scripting criteria for Webmaster Tools.

Note : Using inline JavaScript is a bad practice and is not recommended.

Internal JavaScript:

Internal JavaScript code is code that’s placed anywhere within the web page between the HTML tags . Many web developers choose to place their JavaScript code before the tag.

When JavaScript was written within the section using element then it is called as internal JavaScript.

Advantages to Internal JavaScript:

If the number of lines of Javascript is relatively small, a web page with internal Javascript loads faster than pages that must reference external code. This is because, as the web browser loads the page and encounters the reference to the external code, it must make a separate request to the web server to fetch the code.

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How to Use Inline JavaScript in HTML: A Comprehensive Guide to Best Practices and Tips

Learn how to add, interpret, and call inline JavaScript in HTML with our comprehensive guide. Discover the benefits and best practices to optimize performance and maintainability.

• Adding Inline JavaScript to HTML
• Interpreting Inline JavaScript in HTML
• 1. JavaScript Programming: Introduction to Inline Scripts and Functions
• Calling Inline JavaScript from HTML
• Placing the Script Tag in HTML
• Best Practices for Using Inline JavaScript
• Other code snippets demonstrating how to use inline JavaScript in HTML
• Conclusion
• How to add JavaScript inline to HTML?
• How to use internal JS in HTML?
• Which HTML tag is used to write inline JavaScript?
• Can you inject JavaScript into HTML?

As web developers, we often use JavaScript to create dynamic and interactive web pages. One common way of using JavaScript in HTML is through inline scripts. In this comprehensive guide, we will discuss best practices and tips for using inline javascript in html .

Adding Inline JavaScript to HTML

Inline JavaScript is added to HTML using the tag. The tag can be placed anywhere within the or sections of an HTML document. However, it is recommended to place the tag at the bottom of the section to improve page loading times.

 
Welcome to my webpage
   

Inline JavaScript is useful for small code snippets because it eliminates the need to create a separate JavaScript file . However, for larger code, it is better to use external JavaScript files as they are easier to maintain and debug.

Interpreting Inline JavaScript in HTML

The code written between the tags is interpreted as JavaScript by the browser. The common syntax used in inline JavaScript is the same as in external JavaScript files.

To write clean and maintainable code , it is important to follow best practices. These include keeping the code minimal and optimizing it for performance. Avoid using global variables and function declarations inside inline scripts.

Here is an example of best practices for writing inline JavaScript:

 
Welcome to my webpage
   

1. JavaScript Programming: Introduction to Inline Scripts and Functions

It also demonstrates how to write and call a simple JavaScript It is assumed you already have Duration: 13:23

Calling Inline JavaScript from HTML

Inline JavaScript can be called from HTML using event handlers such as onclick , onload , and onsubmit . Event handlers are attributes on HTML elements that define a JavaScript function to be executed when the event occurs.

Here is an example of calling inline JavaScript from HTML:

While inline JavaScript can be convenient for small code snippets, it has some disadvantages. For example, it can make the HTML code harder to read and maintain. It can also lead to code duplication and decreased performance.

Placing the Script Tag in HTML

The placement of the tag in HTML can affect page loading times. The recommended practice is to place the tag at the bottom of the section to allow the HTML content to load first.

However, in some cases, it might be necessary to place the tag in the section. For example, if the JavaScript code needs to be executed before the HTML content is loaded.

Here is an example of placing the tag in the section:

   
Welcome to my webpage
  

Best Practices for Using Inline JavaScript

To ensure that inline JavaScript is clean and maintainable, it is important to follow best practices. These include:

• Keeping the code minimal
• Avoiding global variables and function declarations
• Using event handlers instead of inline JavaScript where possible
• Using external JavaScript files for larger code snippets
• optimizing the code for performance

Here is an example of best practices for using inline JavaScript:

By following best practices, you can ensure that your inline JavaScript code is clean, maintainable, and optimized for performance.

Other code snippets demonstrating how to use inline JavaScript in HTML

In Html case in point, Simple example of using inline javascript in html code sample

      
Click Me 
 
in this example we saw how to use inline JavaScript or directly in an HTML tag.
  

Conclusion

Inline JavaScript is a useful tool for adding small code snippets to HTML. However, it is important to follow best practices to ensure that the code is clean, maintainable, and optimized for performance.

In general, it is recommended to use external JavaScript files for larger code snippets. This makes the code easier to maintain and debug.

By following the best practices outlined in this guide, you can ensure that your inline JavaScript code is of high quality and provides a great user experience.

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What is Inline Javascript: How to Inline and Benefits of Using it?

When a script tag is used in the HTML file, it is called inlining. This means no external JS file is used instead javascript is put into an HTML file.

Modern code has moved from manual coding and customized structures to templates that provide a framework for effective code creation processes. Especially for front end code. Writing inline javascript is one of the many things you want to do when you want to tinker with HTML.

Why inline javascript?

It is recommended to inline javascript to lessen the number of javascript files that the browser needs to download before displaying the web page.

The thing to consider is that most of the files are tiny and have a few lines of code. It is suggested to link such files to the HTML.

Why shouldn’t you use inline JavaScript in HTML?

Because JavaScript was created in a different era. However, by allowing places and locations such as mobile devices, TV screens and wearable devices, it has evolved beyond its original promotional scope.

In regards to JavaScript, the web, and its DOM manipulation, we go far beyond the architectural setup, version releases, and handwriting of inline JavaScript and beyond the traditional beyond.

How to inline Javascript?

When you want to add an external JavaScript sheet, you use the tag, with reference to where you are in the middle of the file.

A Browser will read your HTML document from top to bottom, drag and load your JavaScript file into place, and start the script accordingly. This means that if you place your JavaScript call in the very top and head area, your script will be executed immediately before the DOM loads.

For some external scripts, all DOM elements need to be loaded first, and it is therefore recommended to place the script-src call at the bottom.

When you write inline JavaScript, what you are doing is the script is similar to the src tag, except that the code is exactly inside the HTML file, rather than being called externally.

You just need to copy the content of your external javascript file and paste them between the script tags of your HTML file.

Example of Inline JavaScript:-

        
 
OXO Solutions
 
 
Enter Your Name: 
 Submit 
  
    

Benefits of Inline Javascript.

This is extremely advantageous as it can save the web browser round trips to the server. This is because it no longer requires an external file to download from the server-side.

Consequences of Inline J.S.

Inline scripts are often seen in places such as Google Analytics tracking code, site verification, and introducing and setting proprietary and external scripting criteria for Webmaster Tools.

While these installations are fairly flawless, they can be difficult to maintain over time if they involve multiple pages. This is especially difficult when the code is passed by multiple developers.

With the possibility of code disputes and an integrated approach to things, a large decentralization can evolve into a larger one.

JavaScript essentially has two main capabilities — one is the ability to call and push data to the server, and the other is the ability to manipulate the DOM based on functions, responses and inputs.

When you start to inline these things, this duplicate code and the manual nature of the inline invite JavaScript can cause long term headaches for the developers involved as well as page consistency issues.

Note on Inline Javascript:

Using inline JavaScript is a bad practice and is not recommended. It can be used for demonstration purposes so that the demonstrator does not have to deal with 2 separate files at once. It is recommended to write JavaScript code in a separate .js file and then link it using the src attribute in the script tag.

2 thoughts on “ What is Inline Javascript: How to Inline and Benefits of Using it? ”

Quick comment: HTTP/2 multiplexing renders your “benefit” of inline JavaScript effectively mute. In fact, if your site supports HTTP/2 it would probably be more performant to use external files rather than pack all the code into one single larger file.

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