Declaring a variable with const is similar to let when it comes to Block Scope. The x declared in the block, in this example, is not the same as the x declared outside the block:

Jul 8, 2025 · 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 …

Jul 11, 2025 · The const keyword in JavaScript is a modern way to declare variables, introduced in (ES6). It is used to declare variables whose values need to remain constant throughout the lifetime of …

Read this tutorial and learn useful information about declaring a constant by using the const keyword which creates a read-only reference to the value.

Apr 16, 2025 · Learn how to declare constants in JavaScript using the const keyword, with examples and explanations.

Sep 14, 2025 · Introduced in ES6 (ES2015), const is a keyword used to declare a block-scoped variable that cannot be reassigned. Let's break that definition down because every part of it is crucial.

1 day ago · Learn JavaScript variables, data types, var vs let vs const, scope, and hoisting explained clearly with simple beginner-friendly examples.

What Is const in JavaScript? The const keyword, introduced in ES6 (ECMAScript 2015), is used to declare variables whose values are intended to remain constant. Unlike var and let, a variable …

JavaScript const keyword allows developers to declare variables that cannot be reassigned or redeclared, ensuring that their values remain constant throughout the code. This lesson covers …

Jan 16, 2026 · JavaScript provides three main ways to declare variables: var, let, and const. While all three are used to store data, they behave differently in terms of scope, hoisting, and reassignment. …