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://www.w3schools.com › JS › js_let.asp
JavaScript Let - W3SchoolsRedeclaring a variable using the let keyword can solve this problem. Redeclaring a variable inside a block will not redeclare the variable outside the block:
https://www.freecodecamp.org › news › how-to-declare-variables-in-javascript
How to Declare Variables in JavaScript – var, let, and const ExplainedThrough this article, you will learn how to declare and mutate variables using var, let, and const, and you'll get a better understanding of the differences between them. I will explain each concept in two parts:
https://stackoverflow.com › questions › 762011
javascript - What is the difference between "let" and "var"? - Stack ...let allows you to declare variables that are limited in scope to the block, statement, or expression on which it is used. This is unlike the var keyword, which defines a variable globally, or locally to an entire function regardless of block scope.
https://developer.mozilla.org › en-US › docs › Web › JavaScript › Reference › Statements › let
let - JavaScript | MDN - MDN Web DocsThe let declaration declares re-assignable, block-scoped local variables, optionally initializing each to a value. Try it. Syntax. js. let name1; let name1 = value1; let name1 = value1, name2 = value2; let name1, name2 = value2; let name1 = value1, name2, /* …, */ nameN = valueN; Parameters. nameN.
https://www.w3schools.com › js › js_variables.asp
JavaScript Variables - W3SchoolsDeclaring a JavaScript Variable. Creating a variable in JavaScript is called "declaring" a variable. You declare a JavaScript variable with the var or the let keyword:
https://fr.javascript.info › variables
Les variables - JavaScriptNous pouvons déclarer des variables pour stocker des données. Cela peut être fait en utilisant var ou let ou const. let – est une déclaration de variable moderne. var – est une déclaration de variable old-school.
https://www.javascripttutorial.net › javascript-let
JavaScript let: Declaring Block-Scoped Variables - JavaScript TutorialThis tutorial introduces you to a new way to declare block-scoped variables using JavaScript let and explains the temporal death zone (TDZ) concept clearly.
https://www.w3schools.com › jsref › jsref_let.asp
JavaScript let Statement - W3SchoolsThe let statement declares a variable. Variables are containers for storing information. Creating a variable in JavaScript is called "declaring" a variable: let carName; After the declaration, the variable is empty (it has no value). To assign a value to the variable, use the equal sign: carName = "Volvo";
https://www.freecodecamp.org › news › var-let-and-const-whats-the-difference
Var, Let, and Const – What's the Difference? - freeCodeCamp.orgvar variables can be updated and re-declared within its scope; let variables can be updated but not re-declared; const variables can neither be updated nor re-declared. They are all hoisted to the top of their scope.
