Summary
Const variables must be initialized at declaration, are not hoisted, and cannot be reassigned or redeclared.

General domain of usage
Application configuration

### `const` Does Not Allow Hoisting

As discussed in the previous chapter, `let` does not allow hoisting i.e. we cannot use a variable before the declaration. Just like `let` we can not use hoisting with the `const`.it is only supported with `var`.

MYPLANET = 'earth';
console.log(MYPLANET);
const MYPLANET;

### Summary:

-   We can neither change the values of the `const` variables through reassignment nor we can redeclare them.
-   Value should be assigned to `const` variables at the time of declaration.

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The syntax of the JavaScript programming language is the set of rules that defines how a JavaScript program will be written and interpreted (by both the runtime system and by human readers).

JavaScript is dynamically typed (also called loosely typed) scripting language. That is, in javascript variables can receive different data types over time. Datatypes are basically typed of data that can be used and manipulated in a program.

Constant 3/3

`const` Does Not Allow Hoisting

Lösning

Summary:

Constant 3/3

const Does Not Allow Hoisting

Lösning

Summary:

`const` Does Not Allow Hoisting