Created
December 30, 2023 22:44
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forwardref with useImperativeHandle
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/* eslint-disable react/display-name */ | |
import React, { forwardRef, useImperativeHandle, useRef, useState } from 'react' | |
const NoteForm = ({ createNote }) => { | |
const [newNote, setNewNote] = useState('') | |
const addNote = (event) => { | |
event.preventDefault() | |
createNote({ | |
content: newNote, | |
}) | |
setNewNote('') | |
} | |
return (<> | |
<div> | |
<h2>Create a new note</h2> | |
<form onSubmit={addNote}> | |
<input | |
value={newNote} | |
onChange={event => setNewNote(event.target.value)} | |
/> | |
<button type="submit">save</button> | |
</form> | |
</div> | |
This should hide along with the form | |
</>) | |
} | |
interface ChildType { | |
children: React.ReactNode | |
} | |
const Togglable = forwardRef(({ children, buttonLabel }: { children: ChildType['children'], buttonLabel: string, }, refs) => { | |
const [show, setShow] = useState(true) | |
const showHide = () => setShow(!show) | |
useImperativeHandle( | |
refs, | |
() => { | |
return { showHide, hey: () => console.log('brave') } | |
} | |
) | |
return ( | |
<div> | |
{show && children} | |
<br /> | |
<button onClick={showHide}>{buttonLabel}</button> | |
</div> | |
) | |
}) | |
const Check = () => { | |
const [note, setNote] = useState([]) | |
const toggleRef = useRef() | |
const createNote = (noteObject: any) => { | |
setNote(note.concat(noteObject.content)) | |
toggleRef.current.showHide() | |
toggleRef.current.hey() | |
console.log(toggleRef) | |
} | |
return ( | |
<div><Togglable buttonLabel='hider' ref={toggleRef}> | |
<NoteForm createNote={createNote} /> | |
</Togglable> | |
<br /> | |
{note.map(n => <>{n}</>)} | |
</div> | |
) | |
} | |
export default Check |
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