Web Reference: Declaring JavaScript Variables Creating a variable in JavaScript is called declaring a variable. You declare a JavaScript variable with the let keyword or the const keyword. Mar 16, 2011 · Beginner JavaScript Tutorial - 3 - Variables thenewboston 2.67M subscribers Subscribe Feb 26, 2026 · Now, let’s look at the three ways to declare variables in JavaScript. - Can be redeclared — We can declare the same variable again. - Function scoped — Works inside a function, not block ({}) scoped. - Block scoped — Same as let. - Best for fixed values — Use when value should not change.
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