https://developer.mozilla.org › fr › docs › Web › JavaScript › Reference › Statements › let

let 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

Learn how to use the let keyword in JavaScript to declare variables with block scope, avoid redeclaration, and prevent hoisting. Compare let with var and const and see examples and browser support.

https://developer.mozilla.org › en-US › docs › Web › JavaScript › Reference › Statements › let

Learn how to use let to declare re-assignable variables that are only accessible within the block where they are declared. Compare let with var and const, and understand the temporal dead zone and redeclaration rules.

https://www.javascripttutorial.net › difference-between-var-and-let

Learn how var and let keywords affect variable scopes, global properties, redeclaration and temporal dead zone in JavaScript. See examples and explanations of the key differences and similarities.

https://www.w3schools.com › jsref › jsref_let.asp

Learn how to use the let statement to declare and assign variables in JavaScript. See examples, syntax, parameters, browser support and more.

https://www.freecodecamp.org › news › var-let-and-const-whats-the-difference

In this article, we'll discuss var, let and const with respect to their scope, use, and hoisting. As you read, take note of the differences between them that I'll point out. Here's an Interactive Scrim of Var, Let, and Const. Var. Before the advent of ES6, var declarations ruled. There are issues associated with variables declared with var, though.

https://runebook.dev › fr › docs › javascript › statements › let

let. La déclaration let déclare des variables locales réaffectables de portée bloc, en initialisant éventuellement chacune à une valeur. 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.javascripttutorial.net › javascript-let

Learn how to use the let keyword to declare variables that are only accessible within a block of code. See examples of let vs var, hoisting, redeclaration, and temporal dead zone.