falsey

Definitions

Adjective. [B1]

Examples

“If the variable is set⟳ to anything except a falsey value, the test⟳ will evaluate⟳ to true.”

“In JavaScript, as well as the true or false Boolean values, other types of variables can be said to be truthy or falsey.”

“To remember⟳ which values are truthy and which are falsey, just memorize the five falsey values - undefined, null, 0, "" and NaN -- and remember⟳ that everything else is truthy.”

“Clojure uses the Boolean operators or and and. or returns either the first truthy value or the last⟳ value, and returns the first falsey value or, if no values are falsey, the last⟳ truthy value.”

CEFR level