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Computer Programming

TypeScript Vs. JavaScript Which is best ?

Considering you can include as much plain JavaScript as you like in your TypeScript project, what factors should you consider when choosing TypeScript or JavaScript for your application? 

TypeScript or JavaScript? Developers contemplate this choice for greenfield web or Node.js projects, but it’s a question worth considering for existing projects too. A superset of JavaScript, TypeScript offers all of the features of JavaScript plus some additional perks. The powerfully built features of JavaScript (JS), and it can easily enhance your website’s HTML pages. While TypeScript is more a superset of JS, or let’s put it like TypeScript is sort of JavaScript with some added features.

What is JavaScript ?

JavaScript is a scripting language which helps you create interactive web pages. It followed rules of client-side programming, so it runs in the user’s web browser without the need of any resources forms the web server. You can also use Javascript with other technologies like REST APIs, XML, and more.

The idea behind developing this script is to make it a complementary scripting language like Visual Basic was to C++ in Microsoft’s language families. However, JavaScript is not designed for large complex applications. It was developed for applications with a few hundred lines of code!

What is TypeScript ?

TypeScript is also an open-source pure object-oriented programming language. It is one of the strongly typed supersets of JavaScript which can compile to plain JavaScript without much problem. TypeScript is not directly run on the browser. Before it needs to be compiled to compile and generate in JavaScript file. The TypeScript source file is in the “.ts” extension which lets to run on any devices.

Key Differences Between TypeScript and JavaScript

  • JavaScript is a scripting language which helps you create interactive web pages whereas Typescript is a superset of JavaScript.

  • Typescript code needs to be compiled while JavaScript code doesn’t need to compile.

  • Comparing TypeScript and JS, Typescript supports a feature of prototyping while JavaScript doesn’t support this feature.

  • Typescript uses concepts like types and interfaces to describe data being used whereas JavaScript has no such concept.

  • Typescript is a powerful type system, including generics & JS features for large size project whereas JavaScript is an ideal option for small size project.

Why JavaScript?

  • Open source project with Microsoft’s patronage

  • Specially designed tool for small scripts

  • Supports classes, interfaces & modules.

  • Compiled JavaScript runs in any browser

  • Allows cross-compilation

  • You can extend JavaScript for writing large apps

  • Adds support for classes, interfaces, and modules

Why TypeScript?

  • TypeScript supports JS libraries & API Documentation

  • It is a superset of JavaScript

  • It is optionally typed scripting language

  • TypeScript Code can be converted into plain JavaScript Code

  • Better code structuring and object-oriented programming techniques

  • Allows better development time tool support

  • It can extend the language beyond the standard decorators, async/await

Comparison Table Between TypeScript and JavaScript
 TypeScript Vs. JavaScript Which is best

In the end of this JavaScript and TypeScript difference , we can say that if an experienced developer is working on relatively small coding projects, then JavaScript is ideal. However, if you have knowledge and expertise development team, then Typescript is a most preferred option.

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