Declare many variables in one statement. Start the statement with var and separate the variables by comma:

Mar 13, 2025 · The var statement declares function-scoped or globally-scoped variables, optionally initializing each to a value.

Nov 7, 2023 · 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. I will …

Feb 10, 2025 · The var keyword is used to declare variables in JavaScript. It has been part of the language since its inception. When a variable is declared using var, it is function-scoped or …

In JavaScript, a variable can be declared using var, let, const keywords. Learn all about JavaScript variables in detail.

In JavaScript, we use the var or let keywords to declare variables. For example, let name; Here, age and name are variables. What is the difference between var and let? Both var and let are …

var is the keyword that tells JavaScript you’re declaring a variable. x is the name of that variable. = is the operator that tells JavaScript a value is coming up next. 100 is the value for the …

Apr 16, 2025 · Variables declared with var can be redeclared and updated within their scope. They are also attached to the global object when declared outside any function. This behavior …

In this first example, x, y, and z are undeclared variables. They are automatically declared when first used: It is considered good programming practice to always declare variables before use. …

Jan 29, 2025 · Variables in JavaScript can be declared using var, let, or const. JavaScript is dynamically typed, so variable types are determined at runtime without explicit type definitions. …