Booleans data type overview

JavaScript Booleans Type

Booleans Data Type

Booleans are comprised of two possible values. Are either true or false. They help us to make comparisons, and make decisions based on the outcome

let isRaining = false;

They are heavily used in if... else conditions, switch cases and with comparison or logical operators.

ex. 10 > 15 // returns false

isRaining || 15 > 10 // returns true, because of the or operator.

isRaining && 15 > 10 // returns false, because both parts that surround the and operator have to be true

!isRaining // returns true, because the boolean value is initially true, and the not operator converts it to false.

More on Boolean values documentation!

More on comparison operators documentation!

More on Logical operators documentation!

Conditional statements documentation​​​​​