typescript vs javascript

JavaScript vs TypeScript – What is the Difference

Developing web pages is considered to be an easy task with the help of scripting languages like JavaScript and Typescript. They are created in a user Interactive environment where users can give their own inputs and designs while programming internally. Typescript is an enhanced version of JavaScript containing additional and advanced features to design interactive web pages.

Let’s dig deep to know more technically about JavaScript Vs TypeScript in this article.


Javascript (JS) is a basic scripting language. Its primary use is to design web pages with the help of scripts. One unique functionality of JavaScript is it enhances our normal HTML pages and also is embedded into the HTML code. JavaScript is an Interpreted language (make use of an Interpreter) and hence it doesn’t need to be compiled. JavaScript helps to develop lively, creative, and interactive web pages. To save Javascript files, use the .js extension along with the file name.

For example, after scripting the program, the particular file is saved like Androidcourse.js

Androidcourse is the file name with .js extension


Now a question will arise in your mind. Why should we use a separate JavaScript into an HTML document? Read the answer below,

JavaScript is a scripts and tags based programming language that is used both on the client-side and server-side scripting that enables your web page to look lively and interactive. Because the user can create and define their own tags inside the program. In general, we know that both HTML and CSS give a user-defined structure and style to web pages. Hence while combining both, the core JavaScript gives web pages a user- interactive look in features that engages a user until work completion.

Hope now you got a realistic clarification on the structure and design of scripting based webpages. Generally, there are 2 ways to use JavaScript in an HTML Document. Let us visualize it.

  • Embed (include) all the JavaScript code into the HTML code by applying the dedicated HTML tag <script> that covers the entire JavaScript code. This is where both are brought into practice together. The default <script> tag should be placed in the <head> section (header section) of your HTML document.
  • Then, create a separate JavaScript file that should be called anywhere within a script element.


Let us see how JavaScript is built with important features,

Server Communication:

Before the webpage gets delivered to the server, the user-input gets validated. Thus ensuring correctness. This is an in-built option in JavaScript.


Interfaces are created in the JavaScript program code to enable a pleasant and lively user experience.


JavaScript is designed in such a way that it allows users to check the data that they have missed. Therefore, there is no need to wait for the page to load again and again..

Date and Time:

Date and Time is also an in-built mechanism that is specifically designed to greet users depending on the login and working time.

Extra Features:

Users can take more advantage of browsers. For example, Users are allowed to edit and change the color of the background pages and text style on the browser status bar.


After the evolution of HTML, JavaScript marked its significance and brand for Interactive web-designing. It’s famous for its open source that could be scripted in both server and client end.It could be worked in almost all environments, has a strong core backend, that finally enables you to use both object-oriented(OOPS based) and functional programming.

JavaScript programming runs on common data type such as number, string, array, boolean, etc.

Currently, Javascript is used as a core scripting language in 93% of websites. And Javascripts are reliable and trustworthy to build large scale projects easily.


TypeScript is one of the open-source programming languages that permits you to write Javascript in your own style. TypeScript is considered as a superset of JavaScript that finally compiles the code into simple JavaScript. As Javascript is both OOPS and functional, TypeScript is purely object-oriented which deals with mainly classes and interfaces and it helps programmers to write object-oriented programs and compile them to JavaScript running both on the server-side and client-side.

Microsoft designed this Typescript for multi-large applications.


The Typescript code could be written in any code editor. It gets converted to a plain JavaScript file and developers could include it in the HTML document. Note that it is platform-independent and could be run in any browser.

While saving Typescript codes, it must be saved in the .ts extension.

A separate Typescript compiler must be installed in your system. It compiles the typescript code and runs as a Javascript file by using the command tsc.ts


Let’s see some advanced features of Typescript from JavaScript.

Basic Features:

It provides developers elementary building blocks for coding from JavaScript. Readers, be aware, you should have JavaScript scripting knowledge to execute TypeScript. Because code conversion will take place during executing time.

Js Libraries:

Javascript libraries are the built-in feature in Typescript. They contain the process logs and built-in frameworks for the developer’s purpose. Code Conversion transfers the JavaScript frameworks too to the TypeScript model and permits the re-usability option.


As said earlier, it is independent of browsers. You can add its tool to any browser and work and it will be compatible.


Transpiler functionalities are the same as Compiler. TypeScript provides the error-checking feature utilizing a Transpiler. Usually, its primary work is to compile the code and notify compilation errors to the developer. It will focus on the errors during the code executing time.

Type Checking:

Static type-checking is a very helpful feature for Typescript developers. Unlike Transpiler, It is done during compile time. Developers can pinpoint errors while typing the code itself.

DOM Management:

Document Object Model is implemented by the browsers. It is defined as a programming interface to make static or dormant websites function properly.


As TypeScript is an open-source language it orders and structures the JavaScript code and simplifies it. Therefore makes the code easy to read and debug. Typescript enhances JavaScript and delivers you highly efficient development tools for JavaScript IDEs and their relevant processes. One who is well versed in JavaScript can easily implement and understand the Typescript nature. Since it’s platform-independent, it still works well with the existing JavaScript libraries and frameworks.

Some advantages of Typescript could be seen below,

  • During Typescript compilation, chances of getting errors are very less since typescript compiles and displays the errors during the development stage only.
  • Typescript enables a unique feature called static typing which allows typing correctness during compile time. This feature is absent in JavaScript.
  • Typescript is the enhanced version of JavaScript with exciting features like ES6.


From the above summary, hope you are clear about the distinctive characteristics of JavaScript and Typescript. Be it Either JavaScript or Typescript, scripting knowledge is necessary for any developer to create interactive web pages. We understand the scripting knowledge purpose and scope in the future our N-SCHOOL academy brought a separate course for learning codes in the Scripting Domain. Experience the live scripting training experience at our N-SCHOOL and check our rest of the courses at contact@n-school.com