Summary
This chapter covers the boolean data type, demonstrating how to assign boolean values and verify their type using the typeof operator.

General domain of usage
conditional logic

### Boolean Data Type

We use the `typeof` operator to check the data type of variables, for example.

let isRaining = true;
console.log(typeof isRaining);
// or like this
console.log(typeof(isRaining));

As you can see in the above code we declared a variable named `isRaining` with the value of `true`, and its data type is `boolean` as expected.

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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.

Boolean 2/4

Boolean Data Type

Lösning