JavaScript - Boolean

A Boolean in Javascript is a data type that can have only two values: true or false. They are used to represent binary decisions or conditions in a program. The Boolean type is often used in control structures, such as if statements, to test whether a certain condition is met, and then take a certain action based on the result.

For example:

let isCold = false;

if (isCold) {

  console.log("Wear a coat.");

} else {

  console.log("Wear a t-shirt.");


In addition to being used in control structures, Boolean values can also be the result of comparison operations, such as >, <, ==, and ===. These operations return a Boolean value indicating whether the comparison is true or false.

For example:

let x = 42;

let y = "42";

console.log(x == y); // true

console.log(x === y); // false

In summary, the Boolean type in Javascript is a simple data type that represents binary values, and it is used to control the flow of a program and make decisions based on the results of tests and comparisons.