DOM object representing an HTML element.

Mechanism coordinating asynchronous JavaScript execution.

Operator providing a fallback for nullish values.

In-memory representation used by some UI frameworks.

Queue containing tasks waiting for execution.

JavaScript mode enforcing stricter language rules.

JavaScript library for building user interfaces.

Runtime for executing JavaScript outside browsers.

Queue for high-priority asynchronous callbacks such as promise handlers.

Automatic or explicit conversion between data types.