useRef
/*
A common use case is to access a child imperatively:
*/
function TextInputWithFocusButton() {
const inputEl = useRef(null);
const onButtonClick = () => {
// `current` points to the mounted text input element
inputEl.current.focus();
};
return (
<>
<input ref={inputEl} type="text" />
<button onClick={onButtonClick}>Focus the input</button>
</>
);
}react useref in useeffect
import React, { useEffect, useRef } from 'react';
const fooComponent = props => {
const inputBtnRef = useRef(null);
useEffect(() => {
//Add the ref action here
inputBtnRef.current.focus();
});
return (
<div>
<input
type="text"
ref={inputBtnRef}
/>
</div>
);
}Copyright © 2021 Codeinu
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