Summary  
This chapter covers naming conventions for boolean variables, recommending prefixes like `is`, `has`, and `are` to clearly indicate their true/false nature.  

General domain of usage  
Software development variable naming conventions

### Boolean naming convention

Boolean, in programming, is a data type that is either `true` or `false`. Prefixes like `is`, `has`, and `are` added in the booleans to distinguish them from other variables. Boolean data-type has two values `true` or `false`. 

**Note**
We will discuss booleans in more detail in the upcoming chapters.

// Not clear that the identifier is a boolean
let clear = true;
console.log(clear);

// clear that the identifier is a boolean
let isClear = true;
console.log(isClear);

This introductory course for beginners in programming gives you an opportunity to create your own projects very soon. JavaScript is a main language of web applications and web pages, and it's quite easy to understand.
Start your journey now!

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 Naming Convention

Boolean naming convention

Solution