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.

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

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.

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

Functions are core building blocks in JavaScript. But when should you use a const function expression versus a standard function declaration? In this comprehensive guide, we‘ll compare these …

Feb 14, 2024 · Uppercase constants There is a widespread practice to use constants as aliases for difficult-to-remember values that are known before execution. Such constants are named using …

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 …