falsey

adj

1. (alt-of, alternative, not-comparable)Alternative form of falsy.

   “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.”