useResizeObserver API

API reference for the useResizeObserver composable.

Functions

(target: MaybeRef<Element>, callback: (entries: ResizeObserverEntry[]) => void, options?: ResizeObserverOptions) => UseResizeObserverReturn

A composable that uses the Resize Observer API to detect when an element's size changes.

(target: MaybeRef<Element>) => UseElementSizeReturn

A convenience composable that uses the Resize Observer API to track an element's size.

boolean

boolean

"content-box" | "border-box"

Readonly<Ref<boolean, boolean>>

Whether the observer is currently active (created and observing)

Readonly<Ref<boolean, boolean>>

Whether the observer is currently paused

() => void

Pause observation (disconnects observer but keeps it alive)

() => void

Resume observation

() => void

Stop observation and clean up (destroys observer)