Fri Jul 22 2022

Importance of JavaScript in Web Development

Web Dev13023 views
Importance of JavaScript in Web Development

JavaScript (JS) is very popular and adopted universally by every web browser for its support which allows dynamic content to get executed in a webpage. It's an object scripting language which is used in web pages along with markup language HTML. JavaScript does not incorporate or abide by any HTML tags or rules. It is similar to the stand-alone programming language developed by Sun Microsystems. JavaScript got its success worldwide with its integration into the web browsers. JS stands unique as it brings out all the special functionalities in the client’s browser instead of the site’s server.

JavaScript can make the website more interactive and user-friendliness of JavaScript helps easy navigation of the website and helps designers to guide the visitors with additional information or guide them through walkthroughs. Visual effects can also be achieved with JavaScript. JavaScript can be used effectively to create special effects like rollover for images.

Since 1995, when Netscape first introduced Javascript to the World Wide Web as a simple client-side scripting language for web browsers, Javascript has become the most misunderstood, disliked and disdained programming language. Users and developers were quick to point out its many design errors. Vendors implemented buggy versions of Javascript in their also buggy web browsers.

But now, 23 years after Javascript first appeared, it has become the dominant programming language of the web. All modern web browsers implement the Javascript language, thus making it the only one deployed on all personal computers and mobile devices around the world. Javascript has become a powerful, dynamic and fully-functional object-oriented programming language on par with more traditional languages.

JavaScript not only supports web pages but also supports external applications like PDF documents, running widgets, supporting for flash applications etc. JavaScript has emerged in web industry like a boom and if you look at the current web scenario there are no web technologies that are not using JavaScript.

The role of JavaScript can never be denied as JavaScript can act as both object-oriented language and procedural language. It has advanced features such as prototypal inheritance, modules, namespaces, anonymous (lambda) functions, and even metaprogramming. Full-blown applications such as Gmail and Google Maps are programmed in Javascript.

Today, you cannot be a web developer if not know dynamic programming languages like Javascript. It’s a language a serious web developer must learn and master for the reasons discussed in this post.

Why does use JavaScript?

Easy to Learn

If you want a bridge between learning web developments along with ease of use, then JavaScript is perfect. It doesn’t take too much time to understand how the language works, and how to use it to make useful dynamic events for a website. It has a very intuitive syntax which is easy to learn. Anybody, without any prior knowledge of computers, can start learning JavaScript and won’t many concepts that they can’t get their heads around. It uses the DOM model that provides plenty of predefined functionalities to the various objects on pages making it a breeze to develop a script to solve a custom purpose.

Works on the Client-Side

JavaScript code snippets don’t require to be sent to the server side for being processed. This saves the load on the server side. The JavaScript codes in a website get processed using the resources on the user’s system. Thanks to this server-side processing, most of the functionalities are possible. It makes the rendering of animations and similar behaviors much less time consuming and a smoother experience.

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JavaScript is used everywhere on the web. The resources to learn JavaScript are numerous. StackOverflow and GitHub have many projects that are using Javascript and the language as a whole has gained a lot of traction in the industry in recent years especially.

Use of MEAN Stack

The developers can further simplify the development process by leveraging the four components of MEAN stack – MongoDB, Express.js, Angular.js, and Node.js. MongoDB is a newly defined NoSQL database. Angular.js is a well-known JavaScript framework supported by Google.

Platform independent

Any  JavaScript-enabled browser, which most browsers are, can easily understand and interpret JavaScript code. It is a free technology and doesn’t require you to go through any installation or configuration procedure. Just open your browser and you can start editing different areas of a webpage.

User Interface Interactivity

JavaScript used to fill web page data dynamically such as a drop-down list for a Country and State. Base on selected Country, State drop-down list dynamically filled. Another one is Form validation, missing/incorrect fields you can alert to users using an alert box.


JavaScript plays nicely with other languages and can be used in a huge variety of applications. Nowadays, there are many ways to use JavaScript through Node.js servers. If you were to bootstrap node.js with Express, use a document database like MongoDB, and use JavaScript on the front-end for clients, it is possible to develop an entire JavaScript app from front to back using only JavaScript.

Powerful frameworks

There is a list of powerful frameworks built around JavaScript which boasts ready to use codes. Such codes are easy to understand as well as debug. You will also get access to plenty more features that will increase your productivity ten folds.

Triggered codes

JavaScript is an Event-Based Programming Language. Means, different code segments are executed in response to a user clicking a button or hovering a mouse. All the code doesn’t get initialized at the time of loading the website. This makes sure that your website’s load time is faster, all the while loading your site with rich features.

Browser compatible

The biggest advantages to a JavaScript having an ability to support all modern browser and produce the same result.

Procedural programming

The language offers all the procedure based features that are the making of a popular and powerful programming language. With JavaScript, if you have options to create branches, loops, initiate conditional checking, and much more will make your website so much more fun to use.

Write Server-Side Code

The web developers can also write server-side code in JavaScript by using a cross-platform runtime engine like Node.js. Node.js is designed as a cross-platform and server-side runtime environment. It further executes the JavaScript code efficiently through the Google V8 JavaScript engine. The built-in libraries provided by Node.js further allow programmers to run their web applications smoothly without relying on external web servers.

Multiple tasking

With JavaScript, you get an event loop module which can run several different sets of instructions at the same time. For example, you are going through a website on your browser and you have activated a JavaScript event. The moment it is triggered, JavaScript runtime stores the information in the message queue. Now if a callback function is executed which contains the stored information then it will be executed again within the loop. In JavaScript, there is the possibility to handle multiple operations with a single thread. This helps the programmers from not having to indulge in additional (or redundant) programming for all the different applications.

Make XMLHttpRequest() Object

XMLHttpRequest is a special JavaScript object that was designed by Microsoft. XMLHttpRequest object call as an asynchronous HTTP request to the Server for transferring data both side without reloading the page.

Build multi-functional websites

It will not be possible to create an application based website without coding knows how especially without JavaScript. This is why, if you or your client wants to have a website which is unique and boasts standout features and functionalities, JavaScript will be the best way to implement them.


Just remember that your website or web page will not be available if JavaScript is not available. Things that you are going to create with it must fulfill users’ goal of reaching a task much faster and with ease. Your site must not break, if such things happen you are not using it right. To say, JavaScript is the backbone and part and parcel of the working of web content, by letting you edit and diversify the content with adding graphics and flash content to your website. JavaScript is very much similar to other programming languages, so understanding it will help you understand others fast and easily.

You can share your experiences with us in the comment section. Thank you!


Stock photo from fatmawati achmad zaenuri

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