/Javascript/React/What does useref do react

What does useref do react

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>
    </>
  );
}

Source: reactjs.org

What does useref do react

const refContainer = useRef(initialValue);
//useRef returns a mutable ref object whose .current property is initialized to the passed argument (initialValue). 
//The returned object will persist for the full lifetime of the component.

Source: reactjs.org

UseRef() in react

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>
    </>
  );
}

Source: reactjs.org

How to use useref hook in react

import React, { useRef } from 'react';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>
    </>
  );
}

Source: reactjs.org

Similar codes

0 vote330 views1 answer
External js doesn't works if revisit the page in react
Javascript React
3 votes332 views4 answers
React Redux Thunk
Javascript React
0 vote349 views1 answer
React document viewer
Javascript React
1 vote337 views1 answer
Firebase app named default already exists react native
Javascript React
0 vote326 views1 answer
React native zindex issue on android
Javascript React
7 votes286 views6 answers
Shadow generator react native
Javascript React
0 vote324 views2 answers
React native bottom sheet example
Javascript React
7 votes359 views3 answers
Install node-sass version for react
Javascript React
0 vote308 views1 answer
React native Stack Navigation Prop unused variable
Javascript React
0 vote312 views1 answer
React native section list sort by alphabet
Javascript React