Jul 11, 2025 · A falsy (sometimes written falsey) value is a value that is considered false when encountered in a Boolean context. JavaScript uses type conversion to coerce any value to a Boolean …

Aug 5, 2025 · In JavaScript, truthy and falsy values are concepts related to boolean evaluation. Every value in JavaScript has an inherent boolean "truthiness" or "falsiness," which means they can be …

Nov 7, 2013 · Just to add to @user568458's list of falsy values: In addition to integer number 0, the decimal number 0.0, 0.00 or any such zeroish number is also a falsy value.

Jul 23, 2025 · In JavaScript, falsy values are those that are evaluated as false when used in a Boolean. Unlike truthy values, falsy values represent "nothingness," "emptiness," or "failure." If you're writing …

In this tutorial, you will learn about JavaScript falsy values and understand how they behave in different boolean contexts.

Jan 30, 2024 · In JavaScript, every value has a boolean equivalent. This means it can either be evaluated as true (truthy value) or false (falsy value) when used in a boolean context. But what is a …

Oct 17, 2025 · Learn what truthy and falsy values mean in JavaScript. This beginner-friendly guide explains how JavaScript decides true or false in conditions, with simple examples and tips.

Falsy (偽値) 偽値 (falsy または falsey) な値とは、論理型コンテキストに現れたときに偽とみなされる値です。 JavaScript は 条件文 や 繰り返し などの場面で、任意の値を強制的に論理型に 型変換 しま …

Mar 2, 2024 · Check if a Value is Truthy in JavaScript We used the logical NOT (!) operator to check if the myVar variable stores a falsy value. The falsy values in JavaScript are: false, 0, -0, "" (empty …

Feb 26, 2016 · In JavaScript, a truthy value is a value that translates to true when evaluated in a Boolean context. All values are truthy unless they are defined as falsy (i.e., except for false, 0, "", …