Vibed to Cracked
Sign In

JavaScript

Optional Chaining

Definition

The `?.` operator that safely accesses deeply nested object properties without throwing if an intermediate value is `null` or `undefined`. Returns `undefined` instead of throwing a TypeError.

Code Example

Javascript
Tip: Modify the code above and click “Run” to see the results

Learn More

Fundamentals tutorials

Related Terms

Destructuring

A syntax for extracting values from arrays or properties from objects into distinct variables. Destructuring simplifies code and is commonly used in function parameters, imports, and React hooks.

Nullish Coalescing

The ?? operator that returns the right-hand operand when the left-hand operand is null or undefined. Unlike ||, it does not treat 0, '', or false as nullish, making it safer for default values.