Web Reference: Jul 8, 2025 · You can use optional chaining when attempting to call a method which may not exist. This can be helpful, for example, when using an API in which a method might be unavailable, either due to the age of the implementation or because of a feature which isn't available on the user's device. The optional chaining ?. is not an operator, but a special syntax construct, that also works with functions and square brackets. For example, ?.() is used to call a function that may not exist. Jun 26, 2025 · Optional chaining is a new operator in JavaScript that lets you safely access deeply nested properties or call functions — even if some parts of the path are null or undefined.
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