TypeScript vs JavaScript: What’s the Difference

JavaScript is a popular programming language that has been used for web development for decades. It allows developers to create interactive and dynamic web pages. In recent years, TypeScript has gained popularity as a superset of JavaScript that offers several additional features.

TypeScript vs. JavaScript: Which One to Use

In this blog, we will explore the differences between TypeScript and JavaScript and help you decide which one to use for your project.

1. Type System

One of the major differences between TypeScript and JavaScript is their type system. JavaScript is dynamically typed, which means that the type of a variable is determined at runtime. On the other hand, TypeScript is statically typed, which means that the type of a variable is determined at compile-time. TypeScript uses type annotations to define the type of a variable, making it easier to catch errors before the code is executed.

2. Code Structure

TypeScript is a superset of JavaScript, which means that it includes all the features of JavaScript and adds some additional features. TypeScript adds support for classes, interfaces, and modules, which makes it easier to write complex code. JavaScript also supports these features, but they are not as powerful or as easy to use as TypeScript.

3. Tooling

TypeScript offers better tooling support than JavaScript. It includes a language server that provides features like code completion, error checking, and refactoring. JavaScript also has some tooling support, but it is not as powerful as TypeScript’s.

4. Adoption

JavaScript has been around for a long time and is widely adopted. It is supported by all major browsers and is used by millions of developers worldwide. TypeScript, on the other hand, is a relatively new language and is not as widely adopted as JavaScript. However, it is gaining popularity and is being used by an increasing number of developers.

5. Learning Curve

If you already know JavaScript, learning TypeScript will not be too difficult. TypeScript includes all the features of JavaScript, so you only need to learn the additional features. However, if you are new to web development, learning TypeScript can be a bit challenging. You need to learn the syntax and the type system, which can take some time.


In conclusion, TypeScript and JavaScript are both powerful languages that can be used for web development. TypeScript offers several advantages over JavaScript, including a static type system, better tooling support, and additional features like classes and interfaces.

However, JavaScript is a widely adopted language that has been around for a long time. If you already know JavaScript, it might be easier for you to stick with it. But if you are starting a new project, or if you want to take advantage of TypeScript’s additional features, it might be worth giving TypeScript a try.

If you are looking for a TypeScript developer to help you with your project, you can search on SourceBae.

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