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://developer.mozilla.org › fr › docs › Web › JavaScript › Reference › Statements › var
var - JavaScript | MDN - MDN Web DocsL'instruction var (pour variable) permet de déclarer une variable et éventuellement d'initialiser sa valeur.
https://www.freecodecamp.org › news › how-to-declare-variables-in-javascript
How to Declare Variables in JavaScript – var, let, and const ExplainedHow to declare variables with var in JavaScript: When you declare a variable with var, it is hoisted and initialized in the memory as undefined before the code execution. So, you can access the variable before declaring it, but it returns undefined. This is sometimes called Declaration hoisting.
https://developer.mozilla.org › en-US › docs › Web › JavaScript › Reference › Statements › var
var - JavaScript | MDN - MDN Web DocsThe var statement declares function-scoped or globally-scoped variables, optionally initializing each to a value.
https://www.w3schools.com › jsref › jsref_var.asp
JavaScript var Statement - W3SchoolsThe var statement declares a variable. Variables are containers for storing information. Creating a variable in JavaScript is called "declaring" a variable: var 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 › javascript-variables-beginners-guide
JavaScript Variables – A Beginner's Guide to var, const, and letIn JavaScript, you can declare variables by using the keywords var, const, or let. In this article, you’ll learn why we use variables, how to use them, and the differences between const, let and var.
https://javascript.info › variables
Variables - The Modern JavaScript TutorialWe can declare variables to store data by using the var, let, or const keywords. let – is a modern variable declaration. var – is an old-school variable declaration.
https://developer.mozilla.org › en-US › docs › Learn › JavaScript › First_steps › Variables
Storing the information you need — Variables - MDN Web DocsFor a start, if you write a multiline JavaScript program that declares and initializes a variable, you can actually declare a variable with var after you initialize it and it will still work. For example:
https://www.javascripttutorial.net › javascript-variables
JavaScript Variables - JavaScript TutorialDeclare a variable. To declare a variable, you use the var keyword followed by the variable name as follows: var message; Code language: JavaScript (javascript) A variable name can be any valid identifier. By default, the message variable has a special value undefined if you have not assigned a value to it.
https://www.javascript.com › learn › variables
JavaScript.com | VariablesJavaScript variables are named values and can store any type of JavaScript value. Learn about JavaScript variable types, what a variable is, variable naming, how to declare a variable, and how to insert variables into strings.
