Booleans are values that can be only one of two things: true or false.

Anything “on” or “off,” “yes” or “no,” or temporary is a usually good fit for a boolean. It’s useful to store booleans in variables to keep track of their values and change them over time.

Editable Code

var kitchenLights = false;

kitchenLights = true;


Booleans are essential for conditionals to work.