JavaScript vs TypeScript

0
8KB

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
Rechercher
Catégories
Lire la suite
Mental Health
ADHD: SOCIETY
The youngest children in a class have been found to be more likely to be diagnosed as having...
Par Kelsey Rodriguez 2023-04-07 18:27:38 0 8KB
Mental Health
Autism Spectrum: Screening
About half of parents of children with ASD notice their child's atypical behaviors by age 18...
Par Kelsey Rodriguez 2023-03-08 15:02:27 0 8KB
Социальные проблемы
Секреты Лос-Анджелеса. L.A. Confidential. (1997)
Бад Уайт и Эд Эксли работают в полиции Лос-Анджелеса. Они настолько разные, что порой ненавидят...
Par Nikolai Pokryshkin 2023-01-29 11:40:28 0 17KB
Mental Health
ADHD: Prognosis
ADHD persists into adulthood in about 30–50% of cases. Those affected are likely to develop...
Par Kelsey Rodriguez 2023-05-05 15:34:28 0 8KB
Business
What Legal Steps Are Required to Start a Business?
Starting a business involves more than just a great idea—it requires careful legal planning...
Par Dacey Rankins 2025-03-13 15:43:16 0 7KB
image/svg+xml


BigMoney.VIP Powered by Hosting Pokrov