https://developer.mozilla.org › ... › Web › JavaScript › Reference › Operators › Nullish_coalescing

The nullish coalescing (??) operator is a logical operator that returns its right-hand side operand when its left-hand side operand is null or undefined, and otherwise returns its left-hand side operand.

https://fr.javascript.info › nullish-coalescing-operator

L’opérateur de coalescence des nuls ?? fournit un moyen court de choisir une valeur “définie” à partir d’une liste. Il est utilisé pour attribuer des valeurs par défaut aux variables : // configurer height = 100, si height est null ou undefined. height = height ?? 100;

https://stackoverflow.com › questions › 476436

Is there a null coalescing operator in Javascript? For example, in C#, I can do this: String someString = null; var whatIWant = someString ?? "Cookies!"; The best approximation I can figure out for Javascript is using the conditional operator: var someString = null; var whatIWant = someString ? someString : 'Cookies!'; Which is sorta icky IMHO ...

https://javascript.info › nullish-coalescing-operator

The nullish coalescing operator is written as two question marks ??. As it treats null and undefined similarly, we’ll use a special term here, in this article. For brevity, we’ll say that a value is “defined” when it’s neither null nor undefined. The result of a ?? b is: if a is defined, then a, if a isn’t defined, then b.

https://www.javascripttutorial.net › javascript-nullish-coalescing-operator

The nullish coalescing operator returns the second value (value2) if the first value (value2) is null or undefined. Technically, the nullish coalescing operator is equivalent to the following block: if (result === null || result === undefined) {. result = value2;

https://www.freecodecamp.org › news › nullish-coalescing-operator-in-javascript

ES11 has added a nullish coalescing operator which is denoted by double question marks, like this: ??. In this article, we will explore why it's so useful and how to use it. Let's get started.

https://masteringjs.io › tutorials › fundamentals › nullish-coalescing

The nullish coalescing operator provides a concise syntax for setting a default value if the given value is nullish. null and undefined are the only nullish values in JavaScript.

https://daily.dev › blog › nullish-coalescing-operator-in-javascript-what-is-it-and-how-to...

The Nullish Coalescing Operator allows us to check if a value is null or undefined, and provide a fallback value if that is the case. However, let us have a look what MDN docs say as well.

https://www.slingacademy.com › article › nullish-coalescing-in-javascript-a-developers-guide

The Nullish Coalescing Operator (??) is a logical operator that returns its right-hand side operand when its left-hand side operand is either null or undefined, and otherwise returns its left-hand side operand.