TypeScript vs JavaScript

Are you not able to decide which language to choose between JavaScript and TypeScript for your next web or mobile app development project? Then you have reached the right place. 

In this blog, we will provide a comprehensive guide on TypeScript vs JavaScript, by this, you will be able to decide whether to go with TypeScript or JavaScript.  

Both JavaScript, as well as TypeScript, are used for developing highly-responsive and interactive web pages. Now, here we will get deeper into both languages so that you can completely understand both languages.

What is JavaScript?

JavaScript is one of the leading programming languages on the HTML as well as Web. It is basically an object-oriented scripted language that is used to build dynamic interactive web pages. It is used to improve the performance of HTML pages and is mainly embedded in the HTML code. Moreover, codes written in JavaScript don’t need compilation because it’s an interpreted language.

The main purpose of launching this script is to provide an independent scripting language the same as Visual Basic was to C++ in the case of Microsoft languages. Initially, JavaScript was built for developing small apps, but it is used to build complex web apps.

What is TypeScript?

TypeScript is basically an open-source programming language that allows you to write simple yet effective JavaScript code. TypeScript runs smoothly on Node.js or any of the web browsers that possess ECMAScript 3 or above versions.

TypeScript is entirely object-oriented that consists of various classes and interfaces. It allows programmers not only to write object-oriented programs but also to get them compiled on the client-side as well as the server-side.

In the case of a huge JavaScript project, choosing TypeScript can be beneficial, as it allows you to build highly strong software and quickly deploy it using the JavaScript application.

Features of JavaScript

  • JavaScript is a cross-platform language
  • It allows both client-side as well as server-side programming
  • The learning curve is fast
  • It allows you to code the way you want in your project
  • It is light-weighted and case-sensitive
  • It possesses a highly robust testing structure
  • It is independent of any platform
  • Handling of date & time is easy during JavaScript Development

Features of TypeScript

  • Enhanced productivity to the developers
  • It can be used on any browsers, devices or the operating systems
  • It is compatible with different classes, interfaces, and subclasses
  • Suitable to highly-scalable client-side development
  • Supports a round of JS libraries
  • It’s modern IDE is suitable for autocomplete and code navigation
  • Compatible with ECMAScript 6

TypeScript vs JavaScript: A Detailed Comparison

Designed and Developed

TypeScript is built by Anders Hejlsberg at Microsoft.

JavaScript is built by Brendan Eich at Netscape Communications Corporation.

Early Error Detection

TypeScript enables developers to utilize a static typing approach. It sends error signals early. Developers can easily find out which objects will work effectively and which don’t.  

Tooling allows developers to identify bugs and correct them prior to application start running, which is absolutely different than JavaScript’s real-time trial and error approach. As soon as you start core programming, you can notice the difference between both languages.

A strong error can’t be separated in JavaScript till the run-time. In TypeScript, the final output can be obtained with the help of modern tools and features.

Huge App Capabilities

JavaScript is not originally released for applications that have complex code of a thousand lines.

In the current scenario, developers are juggling with millions of code lines. This is when TypeScript will be useful. 

Data Binding

In TypeScript, types, and interfaces are used to mention how much data is utilized.

In JavaScript, there is nothing like the types and interfaces.


TypeScript has a really robust and intuitive ecosystem. Hence, it enables developers to statically type different types of idiomatic js attributes such as intersection, union types, and discriminated union.

JavaScript offers a choice to form code without any kind of build step.

Safer Refactoring

Refactoring is smooth in the case of TypeScript if you have clear logic.

In JavaScript, with the increasing number of lines of code, the process becomes weak.


The syntax is nothing but a set of rules used for writing code. All the languages have their defined syntax. TypeScript program consists of modules, functions, comments, variables, statements, and expressions.

In the case of JavaScript, the entire code is written within the script tag. The browser only compiles and runs code written in the script tag.

Client-Server Side Programming

TypeScript is particularly used for client-side programming.

JavaScript is used for both client-side as well as server-side programming.

Code Prompting

TypeScript is continuously growing as a language service for JavaScript. For instance, with the help of the TypeScript declaration file, acquiring info and obtaining code prompts on different arrays, methods, etc is easy. In other words, TypeScript can be extensively beneficial just as a help center and immediate code correction module for any JavaScript program.


To utilize the majority of the TypeScript features, developers are required to annotate their code.

In JavaScript, developers don’t require to annotate their code.

Learning Curve

TypeScript is hard to learn. You should have proper knowledge of scripting.

JavaScript has a faster and adaptable learning curve.


TypeScript doesn’t possess a big community of developers.

JavaScript has a huge community of developers all over the globe.

Key Difference between TypeScript and JavaScript

  • The primary benefit of choosing TypeScript over JavaScript is because it is a superset of JavaScript. Hence, TypeScript is actually introduced for the development of huge programs. 
  • JavaScript is actually used for developing dynamic and highly-responsive web pages. However, JavaScript is used for both client & server-side. While TypeScript is utilized for building complex apps that trans compile to javascript.
  • TypeScript code has to go through the compilation process. While this is not needed in the case of JavaScript.
  • TypeScript allows prototyping, but this is not possible in the case of JavaScript.
  • JavaScript is not suitable to develop a network application, as it doesn’t possess such features.
  • One essential benefit of JavaScript is that it doesn’t need any expensive development tools, you can start programming with a normal editor like notepad++.  On the other hand, TypeScript is considered as a modern programming language that supports IDE such as visual studio and Eclipse through a plugin.


From the above comparison, we can say that both JavaScript and Typescript have their own benefits and limitations. In short, if you want to build a small project, then go straight away with JavaScript. But, if you want to build a complex web application, then choose TypeScript.

We hope that you liked the comparison between TypeScript vs JavaScript. Whether you are an entrepreneur or s small or medium scale business owner and want to develop a web application, then reach out to a professional JavaScript Development Company. They will first clear all of your doubts about the project, understand your business requirements and then provide you the best web application as per your needs.



Please enter your comment!
Please enter your name here