https://stackoverflow.com › questions › 762011
What is the difference between "let" and "var"? - Stack OverflowThe main difference is scoping rules. Variables declared by var keyword are scoped to the immediate function body (hence the function scope) while let variables are scoped to the immediate enclosing block denoted by { } (hence the block scope).
https://developer.mozilla.org › fr › docs › Web › JavaScript › Reference › Statements › let
let - JavaScript | MDN - MDN Web Docslet permet de déclarer des variables dont la portée est limitée à celle du bloc dans lequel elles sont déclarées. Le mot-clé var, quant à lui, permet de définir une variable globale ou locale à une fonction (sans distinction des blocs utilisés dans la fonction).
https://laconsole.dev › blog › differences-let-var-const-js
Différences entre Let, Var et Const en JavaScript - laConsolelet VS var VS const : tableau comparatif. Choisir entre let, var ou const dépend donc de la portée, des mécaniques de redéclaration et réassignation que vous envisagez pour vos variables. Voici un tableau récapitulant ces caractéristiques.
https://www.javascripttutorial.net › difference-between-var-and-let
Difference Between var and let in JavaScript - JavaScript TutorialDifferences Between var and let. Summary: in this tutorial, you will learn about the differences between the var and let keywords. #1: Variable scopes. The var variables belong to the global scope when you define them outside a function. For example: var counter; Code language: JavaScript (javascript)
https://code-garage.fr › blog › quelles-sont-les-differences-entre-var-let-et-const-en...
Quelles sont les différences entre var, let et const en Javascriptlet sert à définir une variable locale. const sert à déclarer une référence constante. Attention, une référence constante ne veut pas dire que la valeur derrière la référence est "immutable", mais que la référence elle-même est immutable.
https://www.delftstack.com › fr › howto › javascript › javascript-let-vs-var
Différence entre Let et Var en JavaScript - Delft StackSi nous déclarons une variable en dehors de la fonction, let et var ont une autre différence majeure entre eux. Si nous utilisons le mot-clé let en dehors de la fonction, une variable locale est créée qui n’est pas accessible de l’extérieur.
https://www.geeksforgeeks.org › difference-between-var-and-let-in-javascript
Difference between var and let in JavaScript - GeeksforGeeksWith the introduction of ES6 in 2015 two more keywords, let and const came into the picture. var and let are both used for variable declaration in javascript but the difference between them is that var is function scoped and let is block scoped.
https://dev.to › man0shr0y › understanding-the-key-differences-let-vs-var-in-javascript...
Understanding the Key Differences: 'let' vs 'var' in JavaScript VariablesOne of the key distinctions between let and var is how they handle scope. Variables declared with var are function-scoped, meaning they can be accessed within the entire function where they are defined. On the other hand, variables declared with let are block-scoped.
https://www.programiz.com › javascript › let-vs-var
JavaScript let Vs var (with Examples) - ProgramizThe let keyword was introduced in the later version of JavaScript known as ES6 (ES2015). And it's the preferred way to declare variables. JavaScript let Vs var. Here's the overview of the differences between let and var. JavaScript let Vs var in Local Scope. var is function scoped.
https://byby.dev › js-var-vs-let
The differences between "var" and "let" in JavaScriptThe main difference between var and let in JavaScript is that var is function scoped while let is block scoped. This means that a variable declared with var can be accessed anywhere within the function where it is defined, while a variable declared with let can only be accessed within the block where it is defined (such as an if ...
