JavaScript vs TypeScript

0
10K

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
Business
What is the CEO's Educational Background?
Understanding a CEO’s educational background provides valuable insight into the knowledge...
By Dacey Rankins 2025-06-30 14:02:04 0 5K
Business
How Can I Make Meetings More Inclusive and Prevent Dominance by a Few Voices?
In many meetings, a handful of voices tend to dominate the conversation, often unintentionally...
By Dacey Rankins 2025-06-02 16:21:58 0 7K
Programming
Azure Pros & Cons
1. PRO - High Availability Unlike other vendors, the Microsoft Azure cloud offers high...
By Jesse Thomas 2023-06-27 10:36:21 0 14K
Cultures and Groups
Arts and Culture
Culture and art is a rather specific direction, if we describe it in terms of employment and...
By FWhoop Xelqua 2023-01-19 16:45:09 0 24K
Conditions and Diseases
Diseases of civilization, why they are called so, what is their cause, the main directions of prevention
Diseases of civilization, why they are called so, what is their cause, the main directions of...
By Leonard Pokrovski 2024-04-13 11:34:50 0 15K

BigMoney.VIP Powered by Hosting Pokrov