https://code-garage.fr › blog › quelles-sont-les-differences-entre-var-let-et-const-en...

Mais depuis la version 6 (ECMAScript 2015) de la spécification du langage, deux nouveaux mot-clés sont apparus : let et const. Si l'on devait résumer la définition de ces deux nouvelles manières de déclarer des variables, on pourrait dire que : let sert à définir une variable locale; const sert à déclarer une référence constante

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

Learn how var, let, and const differ in JavaScript variable declaration. Var is globally or function scoped and can be re-declared, while let and const are block scoped and cannot be re-declared.

https://stackoverflow.com › questions › 22308071

The difference between let and const is that once you bind a value/object to a variable using const, you can't reassign to that variable. In other words Example: const something = {}; something = 10; // Error. let somethingElse = {}; somethingElse = 1000; // This is fine.

https://www.freecodecamp.org › news › differences-between-var-let-const-javascript

Variables declared with const, just like let, are hoisted to the top of their global, local, or block scope – but without a default initialization. var variables, as you've seen earlier, are hoisted with a default value of undefined so they can be accessed before declaration without errors.

https://www.geeksforgeeks.org › difference-between-var-let-and-const-keywords-in-javascript

Use let when you know a variable’s value might change later in your code. Use const for variables that should never change once you set them. Using let and const makes your code easier to understand and helps prevent errors caused by unexpected variable changes.

https://blog.javascripttoday.com › blog › var-vs-let-vs-const

Learn how to declare variables in JavaScript using var, let, and const keywords. See the differences in scoping, hoisting, and reassignment behavior, and examples of each keyword.

https://blog.kevinchisholm.com › javascript › let-vs-const

Learn how to use let and const to create variables with block-level scope in JavaScript. See examples of how let allows re-assignment, while const does not, and how to declare variables inside loops.