TypeScript vs JavaScript

The main difference between TypeScript and JavaScript is that TypeScript is an open-source programming language that supports building large-scale web applications. On the other hand, JavaScript is a scripting language that supports you in creating interactive web pages.

In this article, we will significantly explore the difference between TypeScript vs JavaScript. But, before we do that, let’s quickly go through the topics listed under the table of contents (TOC) that we will cover in this article.

Table of contents (TOC)

• TypeScript vs JavaScript
• What is TypeScript?
• Advantages of TypeScript over JavaScript
• What is JavaScript?
• Advantages of JavaScript over TypeScript
• Key differences between TypeScript vs JavaScript

TypeScript vs JavaScript 

For a better understanding, let’s explore the difference between TypeScript vs JavaScript in a tabular format:

You can also explore other differences between articles, such as:

What is TypeScript? 

TypeScript definition: TypeScript is an open-source programming language developed by Microsoft that supports building large-scale web applications. 

TypeScript can be considered an updated version of JavaScript that consists of various concepts and features that were missing in JavaScript, such as types, interfaces, prototyping, etc. In short, it can be considered a superset of JavaScript. Developers mainly use TypeScript to develop complex or large-web applications.

You can also explore: TypeScript online courses

TypeScript supports static and dynamic typing, and along with that, TypeScript always highlights or detects the error at the time of compilation, but this is not the case with JavaScript. In order to understand TypeScript in a better way, let’s go through a code written in TypeScript language.

You can also explore: Top 10 Basic TypeScript Interview Questions

TypeScript example:

TyeScript code to multiply two numbers:

Now, to understand the TypeScript language better, let’s go through some of the advantages of TypeScript over JavaScript in the next section.

Advantages of TypeScript over JavaScript 

Regarding TypeScript vs JavaScript, there are various advantages of TypeScript over JavaScript. Let’s explore some of those advantages:

• TypeScript supports both static and dynamic typing.
• It has better documentation for APIs in comparison to JavaScript.
• TypeScrit can operate or run on any browser and even on a JavaScript engine
• It highlights errors at the time of compilation (time of development).
• TypeScript underpins specifically static composing and helps in code organizing.
• TypeScript has features like IntelliSense that automatically provide active hints while the user adds or writes the code.

What is JavaScript? 

JavaScript definition: JavaScript is a server-side programming language developed by Brendan Eich that helps develop interactive web pages.

JavaScript is one of the top programming languages in today’s era. This language is lightweight and cross-platform that is used for both front-end development as well as back-end development. Developers mainly use JavaScript in order to make the static pages more dynamic with sophisticated features and functionality, such as search boxes on various websites, such as Amazon, Netflix, Instagram, etc.

You can also explore: JavaScript Array Methods

In layman’s terms, we can define JavaScript as an object-oriented scripting language that allows you to add interactive elements to web pages. In order to better understand JavaScript, let’s look at the code that performs the same functions as the code above, but this time, written in the JavaScript language.

You can also explore: Top 85+ JavaScript Interview Questions and Answers for 2022

JavaScript example:

JavaScript code to multiply two numbers:

Advantages of JavaScript over TypeScript 

Regarding TypeScript vs JavaScript, there are various advantages of JavaScript over TypeScript. Let’s explore some of those advantages:

• JayaScript supports abstract classes.
• JavaScript code does not require compilation, but it’s not the same as TypeScript. Apart from that, TypeScript takes a long time to compile the code.
• To run JavaScript in a browser, no compilation step is needed to run the script. Every web browser includes a JavaScript engine that provides a runtime environment for JavaScript.

Key differences between TypeScript vs JavaScript

Some of the key differences between TypeScript vs JavaScript are:

• JavaScript does not support prototyping features, but TypeScript does.
• JavaScript is a scripting language, but TypeScript is an open-source programming language.
• TypeScript supports both static and dynamic typing. But JavaScript only supports dynamic typing.
• TypeScript is used to build complex or large-scale web applications, whereas JavaScript is used to develop interactive web pages.
• In TypeScript, errors are highlighted or detected at the time of compilation or early development phase. On the other hand, in JavaScript, the errors are detected only at the run time.

Conclusion

TypeScript can be considered the superset of JavaScript as it consists of various features and concepts that were missing in JavaScript. You can easily execute all the JavaScript files with the extension of .js in TypeScript without any issues.

Even after all this, JavaScript language is different and can’t be replaced with TypeScript language as it has its benefits, such as the TypeScript language can’t be executed directly in web browsers. This makes the position of JavaScript more prominent. Hence, we can say that both of these programming languages have their advantages and disadvantages.

Now that you understand the difference between TypeScript vs JavaScript, you can choose the appropriate language per your requirements or needs. If you have any queries regarding the topic, please feel free to send your queries to us. We will be happy to help!