JavaScript vs TypeScript

0
4KB

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
Nach Verein filtern
Read More
Programming
Python Assert
The assert keyword is used when debugging code. The assert keyword lets you...
Von Jesse Thomas 2023-03-21 21:48:28 0 4KB
Социальные проблемы
Молочные зубы. Babyteeth. (2020)
Когда Милла встречает Мозеса, кажется, что у них ничего общего: она – робкий подросток с...
Von Nikolai Pokryshkin 2022-10-19 17:24:25 0 20KB
Construction and Maintenance
Skyscrapers
A skyscraper is a very tall (or very long, see horizontal skyscraper) multi-storey building with...
Von FWhoop Xelqua 2023-07-22 18:07:57 0 17KB
Mental Health
ADHD: Psychiatric Comorbidities
In children, ADHD occurs with other disorders about two-thirds of the time. Other...
Von Kelsey Rodriguez 2023-03-27 17:51:05 0 4KB
Mental Health
ADHD: Neurotransmitter pathways
Previously, it had been suggested that the elevated number of dopamine transporters in people...
Von Kelsey Rodriguez 2023-04-13 22:01:35 0 4KB
image/svg+xml


BigMoney.VIP Powered by Hosting Pokrov