Advantages of JavaScript  


Advantages of JavaScript  

There is no perfect programming language. Therefore, a new language gains popularity every few years to satisfy the needs of the time. For instance, the C programming language dominated the 1990s and saw little competition for a while. Later, as time and community demand changed, Python gained popularity because of its vast benefits over C, and finally, JavaScript took the stage. Everyone now appears to be talking about the groundbreaking technology known as JavaScript. This post talks about the disadvantages and advantages of JavaScript.

Advantages of JavaScript 

Let’s start off with the benefits of JavaScript that make it superior to other programming languages. 

  1. Speed
  2. Reduces load on the server
  3. Ease of use
  4. Rich Interface
  5. Versatility
  6. Extended functionality
  7. Interoperability
  8. Popularity
  9. Platform independence
  10. Powerful frameworks
  11. Procedural programming features
  12. Response to user activity
  13. Updates


JavaScript is an “interpreted” language, so it cuts down on the time needed for compilation in other languages like Java. Additionally, it is a client-side script that shortens the time required to establish a server connection, which speeds up program execution.

Reduces Load on the Server

The language runs on the client side rather than the server. Thus, the server doesn’t have to deal with the stress of executing JavaScript. Once this burden is reduced, the server will function more quickly and concentrate on other tasks like data management. 

Ease of Use

JavaScript is one of the simplest languages to learn, particularly for web programming. It has been designed to be simple for web developers to understand and use. Since difficult languages have fewer engineers and demand a higher budget, this helps web companies save a lot of money on development.

Rich Interface

JavaScript offers developers a variety of interfaces to build engaging websites. Websites with drag-and-drop elements or sliders may have a more robust user experience. This increases user interaction with the website.


The versatility of JavaScript is its most valuable quality. There are many different ways to integrate it into your website. Since Node.js integrates effectively with MongoDB and MySQL, it can not only build and finish the front end of the website but also handle its back end.

Extended Functionality

To save time and money, third-party add-ons such as Greasemonkey (a Mozilla Firefox extension) enable developers to incorporate small sections of prefabricated code into their code. These add-ons make it easier and faster for developers to create JavaScript applications than they could with other coding languages.


JavaScript seamlessly integrates with other programming languages, so many developers favour using it to create various apps. Any webpage or script of another computer language can incorporate it. 


JavaScript is one of the most popular languages for web development. It is an important factor for every working website. Even the most popular websites worldwide, including Amazon and Google, use JavaScript since it is regarded as a very powerful technology. Due to its steadily growing popularity, it is now simpler than ever to learn this language online through various courses.

Independent Platform

Most browsers support JavaScript, making it simple for any browser to comprehend and recognise JavaScript code. You don’t need to go through any installation or setup procedures because it is an easily available technology. Simply use your browser to create several webpage editing zones.

JavaScript Has Powerful Frameworks 

Around JavaScript, many commanding frameworks display ready-to-use codes. Such codes are all easy to comprehend and troubleshoot. Depending on the structure in question, you will have access to several additional capabilities that will exponentially increase your efficiency.

JavaScript Provides Procedural Programming Features

Despite being easy to learn, the language has all the characteristics that make it a popular and significant programming language. JavaScript allows you to create branches, start conditional checking, start loops, and much more, making using your website a lot more fun.

JavaScript Codes Are Activated in Response to User Activity 

JavaScript is an Event-Based coding language. This means that various code segments are run after a user clicks a button. As a result, when the website loads, none of the code is initialised. By doing this, you can be certain that your website’s load time won’t be at risk as you load it with high-end features.


Since the release of ECMAScript 5, the scripting specification on which JavaScript is based, ECMA International has prioritised updating JavaScript annually. 13 editions of features have been released since 1997. The JavaScript family now includes the ES2022 features that have passed stage 4 verification.

Disadvantages of JavaScript

It’s not always the best practice to use JavaScript when developing online applications. In many circumstances, JavaScript might not function as well as some of the other languages. The issues with JavaScript have been briefly discussed in this section.

  1. Client-side security
  2. Debugging facilities
  3. Browser support
  4. Bitwise function
  5. Rendering Problems

Client-side Security

Since the user can see the JavaScript code, others could misuse it. These actions can involve using the source code anonymously. Additionally, it is relatively simple to insert code into the website that jeopardises the security of data transmitted through the website.

Insufficient Debugging Facilities

While some HTML editors provide debugging, they are less efficient than C or C++ editors. Additionally, because the browser doesn’t provide any errors, the developer has trouble identifying the problem.

Browser Support

JavaScript is interpreted differently by each browser. The code must therefore run across a variety of systems before being published. Since they do not support some new functions, we also need to look at the older browsers.

Sluggish Bitwise Function

JavaScript operates on 32-bit bitwise operands and stores numbers as 64-bit floating-point numbers. JavaScript performs operations on the 32-bit signed integers before converting them back to 64-bit JavaScript numbers. The process of converting a number to an integer continuously requires more time. As a result, the script runs slower and requires more time to execute.

Rendering Problems

The website’s entire JavaScript code can stop rendering due to a single error in the code. It appears to the user as though JavaScript is absent. The browsers, however, are very tolerant of these mistakes.


Every programming language has its pros and cons, and so does JavaScript. You can always use the language to your benefit, but there will always be some shortcomings. It is better to understand the disadvantages of the language you use to avoid errors in your project. 

5 Day Coding Challenge – learn JavaScript basics

Code Institute’s free 5 Day Coding Challenge can offer you some insights into HTMLCSS & JavaScript. The best thing about the challenge, other than learning the basics, is that it’ll let you know if you have an aptitude for software development – and it will show you the advantages of JavaScript. Register for this weekly challenge through the form below. Alternatively, if you want to learn more about our Full Stack Software Development programme, follow this link

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