https://stackoverflow.com › questions › 33040703

A function expression, that is: [const | let | var] = function {} (or => Is the creation of an anonymous function (function {}) and the creation of a variable, and then the assignment of that anonymous function to that variable.

https://stackoverflow.com › questions › 52020411

First, const prevents reassignment of the name square while function does not. Second, using an arrow function doesn't have it's own lexical context, so it won't have a scoped this and can't be used as a constructor.

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

const. La déclaration const permet de créer une constante nommée accessible uniquement en lecture. Cela ne signifie pas que la valeur contenue est immuable, uniquement que l'identifiant ne peut pas être réaffecté. Autrement dit la valeur d'une constante ne peut pas être modifiée par des réaffectations ultérieures.

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

The const declaration declares block-scoped local variables. The value of a constant can't be changed through reassignment using the assignment operator, but if a constant is an object, its properties can be added, updated, or removed.

https://www.w3schools.com › JS › js_const.asp

When to use JavaScript const? Always declare a variable with const when you know that the value should not be changed. Use const when you declare: A new Array; A new Object; A new Function; A new RegExp

https://www.w3schools.com › js › js_function_definition.asp

Functions can also be defined with a built-in JavaScript function constructor called Function(). Example const myFunction = new Function("a", "b", "return a * b");

https://www.javascripttutorial.net › javascript-const

ES6 provides a new way of declaring a constant by using the const keyword. The const keyword creates a read-only reference to a value. By convention, the constant identifiers are in uppercase. Like the let keyword, the const keyword declares blocked-scope variables.

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

When to use JavaScript const? As a general rule, always declare a variable with const unless you know that the value will change. Use const when you declare: A new Array; A new Object; A new Function; A new RegExp

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

var declarations are globally scoped or function scoped while let and const are block scoped. var 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.