JavaScript vs TypeScript

0
8K

Difference between TypeScript and JavaScript

JavaScript and TypeScript look very similar, but there's one important distinction.

The key difference between JavaScript and TypeScript is that JavaScript lacks a type system. In JavaScript, variables can haphazardly change form, while TypeScript in strict mode forbids this. This makes TypeScript easier to manage and maintain, especially with a large codebase.

JavaScript vs. TypeScript example

TypeScript's type system has a minor impact on how variables are referenced and declared, yet it has a huge impact on maintainability and consistency.

For example, here is how to declare numeric- and text-based variables in JavaScript:

let foo = 1
let bar = "text"
bar = 123 // allowed in JavaScript

Here are the same variables declared and initialized in TypeScript:

let foo: number = 1
let bar: string = "text"
bar = 123 // not allowed in TypeScript
Search
Categories
Read More
Environment
The concept of the business environment
All living things, including humans, live in the environment. Besides Natural environment,...
By FWhoop Xelqua 2023-07-30 16:38:38 0 516K
Television
TCT Live TV. Marion, Illinois, United States.
Take a look at the TCT Network and you will find award-winning exclusive programming, live...
By Nikolai Pokryshkin 2022-11-21 18:17:44 0 28K
Science Fiction and Fantasy
Spider-Man: No Way Home. (2021)
With Spider-Man's identity now revealed, Peter asks Doctor Strange for help. When a spell goes...
By Leonard Pokrovski 2023-02-26 16:46:05 0 16K
Financial Services
The building blocks of Keynesian analysis
Key points Keynesian economics is based on two main ideas. First, aggregate demand...
By Mark Lorenzo 2023-03-16 20:30:06 0 10K
Mental Health
Dyslexia: Pathophysiology
For most people who are right-hand dominant, the left hemisphere of their brain is more...
By Kelsey Rodriguez 2023-06-26 17:18:55 0 8K
image/svg+xml


BigMoney.VIP Powered by Hosting Pokrov