Typescript VS JavaScript (The Differences)

David Brown (Senior Developer) Updated February 19, 2024
Typescript VS JavaScript (The Differences)

Have you ever heard of TypeScript and wondered how it differs from JavaScript? TypeScript is a powerful open-source language that is becoming increasingly popular in web development.

In this article, we’ll discuss the differences between TypeScript and JavaScript and how TypeScript can be used to improve the development process.

What is Typescript vs JavaScript?

Typescript is a programming language developed and maintained by Microsoft that is a superset of JavaScript. It is a typed language that provides optional static type-checking, classes, interfaces, and other features that are not available in regular JavaScript. It can be compiled into plain JavaScript that can be run in any browser or host environment. In addition to providing features not available in JavaScript, TypeScript also makes writing and maintaining large projects easier by providing additional features such as better error handling.

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Advantages of Typescript Over JavaScript

Typescript is becoming increasingly popular among developers due to its ability to improve productivity and code quality.

It is a superset of JavaScript, which extends JavaScript with additional features and tools such as strong typing and object-oriented programming.

Let’s explore the advantages of Typescript over JavaScript:

  1. Strong Typing: One of the main advantages of Typescript over JavaScript is its strong typing system. This system enables the use of static typing to ensure that variables are assigned values that are of the correct type. This prevents errors due to mixing up data types and reduces debugging time.
  2. Object-Oriented Programming: Typescript supports object-oriented programming, enabling developers to create objects and classes. This makes code more reusable and maintainable and helps avoid errors due to incorrect data types.
  3. Improved Readability: Typescript offers enhanced readability by providing better syntax highlighting, autocompletion, and code navigation tools. This makes it easier for developers to read and understand code, leading to faster development times.
  4. Faster Development Times: Because of Typescript’s improved readability and object-oriented programming capabilities, developers can create code faster. This leads to faster development times, allowing for quicker delivery of projects.
  5. Improved Security: Typescript also has better security than JavaScript, as it is less prone to malicious code injection. This prevents attackers from gaining access to sensitive data, improving the application’s overall security.

In conclusion, Typescript offers several advantages over JavaScript, such as strong typing, object-oriented programming, improved readability, faster development times, improved debugging, and improved security.

These advantages make Typescript a powerful language that can help developers create better applications.

Disadvantages of Typescript

Despite its advantages, there are some potential drawbacks to using Typescript.

  • First, Typescript requires additional setup and configuration. This can be a daunting task for new developers or those with limited experience with the language. Typescript also requires more time and effort than other programming languages since its syntax is more complex.
  • Second, Typescript is not as widely adopted as other popular programming languages, so the pool of resources and tutorials available is not as large. Additionally, Typescript is not natively supported by all browsers, which can limit the potential uses of the language.
  • Third, Typescript does not support the dynamic typing of variables, so developers must declare the type of each variable. This can be time-consuming and lead to errors if the variable type is not declared correctly.
  • Finally, Typescript is more difficult to debug than traditional JavaScript. This is because Typescript is compiled into JavaScript before it is executed, making it difficult to pinpoint errors in the original code.

Overall, there are some potential drawbacks to using Typescript. It requires additional setup and configuration, is not as widely adopted as other languages, does not support dynamic typing, and is more difficult to debug.

However, for those willing to put in the time and effort to learn the language, the advantages of Typescript may outweigh the potential disadvantages.

When Should You Use Typescript and When Should You Use JavaScript?

When deciding which language to use, it is important to consider the type of project you are working on. Typescript should be used for larger projects that require more structure and type safety.

It is also a great choice for teams that have both experienced and inexperienced developers, as the type safety helps to ensure that the codebase is consistent and well-structured.

On the other hand, JavaScript is well-suited for smaller projects with tight timelines, as it allows developers to write code without the need for type declarations quickly.

A Comparison of Typescript and JavaScript Syntax

The syntax of Typescript is similar to that of JavaScript, but it adds some extra features that make it more powerful and easier to use.

For example, Typescript supports strongly typed variables, meaning that the type of data stored in a variable must be declared when it is declared.

This makes it easier to catch errors and helps prevent bugs from occurring.

Another important difference between the two languages is that Typescript has a more structured approach to code organization.

In Typescript, code is broken down into modules, classes, and interfaces, which makes it easier to organize and manage the code logically.

On the other hand, JavaScript does not have a formal way of organizing code and relies on functions and variables instead.

Typescript also supports features such as generics, allowing developers to create code that can be reused across multiple projects. This makes it easier to maintain and update code and make it more efficient.

JavaScript does not have this feature, so developers must write code from scratch for each new project.


In conclusion, TypeScript is a great language to use if you want to improve the quality of your code and make it easier to maintain.

It offers many features JavaScript doesn’t have, such as static typing, classes, and interfaces.

TypeScript may take some time to learn, but it’s worth it in the end.

David Brown
About the author

David is a self-taught senior developer who lives in San Diego. He has over 10 years of experience in the software development industry and has worked on a variety of projects. He has a passion for coding, and a keen interest in the latest online education technology.

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