TypeScript Vs. JavaScript

TypeScript

JavaScript

It is an Object Oriented Language (Class based) It is an Object Based Language (Prototype based)
Statically Typed language Dynamically Typed language
Supports Modules Does not Support Modules
Provides Errors at Compile time / during development Doesn’t provide Compile time errors
Takes more time as the code needs to be Compiled No need of compilation

Introduction to TypeScript

TypeScript is an open-source, object-oriented programming language developed and maintained by Microsoft Corporation. Its journey began in 2012, and since then, it has gained significant traction in the developer community. It is a Strict Super Set of JavaScript, which means anything implemented in JavaScript can be implemented using TypeScript along with adding enhanced features (every existing JavaScript Code is a valid TypeScript Code). As TypeScript code is converted to JavaScript code it makes it easier to integrate into JavaScript projects. It is designed mainly for large-scale projects.

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Key Features of TypeScript

1. Static Type Checking (Optional)...

Structure of TypeScript

TypeScript Code cannot be interpreted by the Browser directly so there is a need to compile the TypeScript code into plain JavaScript Code, for this purpose we need the TypeScript Compiler (tsc)....

TypeScript Compiler (tsc)

Written in TypeScript itself. Compiles .ts files to .js files. Installed as an NPM package (NodeJS). Supports ES6 syntax....

TypeScript Vs. JavaScript

TypeScript JavaScript It is an Object Oriented Language (Class based) It is an Object Based Language (Prototype based) Statically Typed language Dynamically Typed language Supports Modules Does not Support Modules Provides Errors at Compile time / during development Doesn’t provide Compile time errors Takes more time as the code needs to be Compiled No need of compilation...

Why TypeScript is Gaining Popularity ?

Initially, JavaScript was designed for lightweight, simple DOM manipulations. However, as web applications grew in complexity, developers needed more robust tools. TypeScript stepped in to address these needs. Classes and Objects: TypeScript’s support for classes and objects simplifies implementing object-oriented concepts. It’s easier to reason about and maintain code when you have proper class-based structures. Frameworks and Libraries: TypeScript’s adoption by popular frameworks like Angular has contributed to its rising popularity. Developers appreciate the enhanced features and the ability to write cleaner, safer code....

Why Do We Use TypeScript ?

Better developer experience – One of the biggest advantages of TypeScript is to enable IDEs to provide a richer environment for spotting common errors as you type the code. For a large scale project adopting TypeScript might result in more robust software, while still being deployable where a regular JavaScript application would run. Code quality – Defining data structures in the beginning, using types and interfaces, forces you to think about your app’s data structure from the start and make better design decisions. Prevents bugs – TypeScript won’t make your software bug free. But it can prevent a lot of type-related errors. Along with the Clever IntelliSense many browsers and IDEs support direct debugging through Source Maps. Active community – TypeScript is getting more and more popular. It’s used by the top tech companies like Google, Airbnb, Shopify, Asana, Adobe, and Mozilla so we can assume that it reaches their expectations in terms of scalability – as they are developing large and complex applications. TypeScript Is Just JavaScript – TypeScript starts with JavaScript and ends with JavaScript. Typescript adopts the basic building blocks of your program from JavaScript. All TypeScript code is converted into its JavaScript equivalent for the purpose of execution....

Basic Example of TypeScript

index.html       

Welcome To GFG

      

        Default code has been         loaded into the Editor.     

         Javascript let myString: string;   myString = 'Hello from ts'   console.log(myString);...