https://www.w3schools.com › JS › js_let.asp
JavaScript Let - W3SchoolsJavaScript had Global Scope and Function Scope. ES6 introduced the two new JavaScript keywords: let and const. These two keywords provided Block Scope in JavaScript: Example. Variables declared inside a { } block cannot be accessed from outside the block: { let x = 2; } // x can NOT be used here. Global Scope.
https://developer.mozilla.org › fr › docs › Web › JavaScript › Reference › Statements › let
let - JavaScript | MDN - MDN Web DocsL'instruction let permet de déclarer une variable dont la portée est celle du bloc courant, éventuellement en initialisant sa valeur. Exemple interactif. Syntaxe. js. let var1 [= valeur1] [, var2 [= valeur2]] [, …, varN [= valeurN]]; Paramètres. var1, var2, …, varN. Le nom de la ou des variables.
https://developer.mozilla.org › en-US › docs › Web › JavaScript › Reference › Statements › let
let - JavaScript | MDN - MDN Web Docslet - JavaScript | MDN. The 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.programiz.com › javascript › let-vs-var
JavaScript let Vs var (with Examples) - ProgramizIn this tutorial, you will learn about the difference between let and var in JavaScript with the help of examples.
https://stackoverflow.com › questions › 762011
javascript - What is the difference between "let" and "var"? - Stack ...Scoping rules. The 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://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 › how-to-declare-variables-in-javascript
How to Declare Variables in JavaScript – var, let, and const ExplainedAnd if you know the variable declaration process inside and out, you'll have the confidence to start writing great JS code. Through 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.
https://interactive-examples.mdn.mozilla.net › pages › js › statement-let.html
JavaScript Demo: Statement - Let - MozillaJavaScript Demo: Statement - Let. let x = 1; if (x === 1) {. let x = 2; console.log (x); // Expected output: 2.
https://runebook.dev › fr › docs › javascript › statements › let
JavaScript - let [fr] - Runebook.devJavaScript. Statements. 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.
Syntax. let var1 [= value1] [, var2 [= value2]] [, ..., varN [= valueN]]; Parameters. var1, var2, …, varN. Variable name. It can be any legal identifier. value1, value2, …, valueN. Initial value of the variable. It can be any legal expression. Description.
