useFocusWithin ​
Reactive utility to track if an element or one of its decendants has focus. It is meant to match the behavior of the :focus-within CSS pseudo-class. A common use case would be on a form element to see if any of its inputs currently have focus.
Demo ​
Focus in form: false
Basic Usage ​
vue
<script>
import { useFocusWithin } from '@vueuse/core'
const target = ref()
const { focused } = useFocusWithin(target)
watch(focused, (focused) => {
if (focused)
console.log('Target contains the focused element')
else console.log('Target does NOT contain the focused element')
})
</script>
<template>
<form ref="target">
<input type="text" placeholder="First Name">
<input type="text" placeholder="Last Name">
<input type="text" placeholder="Email">
<input type="text" placeholder="Password">
</form>
</template>Type Declarations ​
typescript
export interface UseFocusWithinReturn {
/**
* True if the element or any of its descendants are focused
*/
focused: ComputedRef<boolean>
}
/**
* Track if focus is contained within the target element
*
* @see https://vueuse.org/useFocusWithin
* @param target The target element to track
* @param options Focus within options
*/
export declare function useFocusWithin(
target: MaybeElementRef,
options?: ConfigurableWindow,
): UseFocusWithinReturnSource ​
Contributors ​
Anthony Fu
sun0day
Mikhailov Nikita
Boris Moiseev
Jelf
William T. Kirby