/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

1 vote173 views2 answers
Npm youtube-react
Javascript React
0 vote145 views2 answers
React native countdown
Javascript React
-1 vote139 views1 answer
How to retrieve filename from a blob response in react js
Javascript React
0 vote132 views2 answers
Hide header title in react navigation Drawer navigation
Javascript React
0 vote149 views2 answers
.env file example react native
Javascript React
0 vote138 views1 answer
Inline style to change background color react
Javascript React
1 vote145 views1 answer
React-bootstrap navbar nav link refreshes page
Javascript React
0 vote150 views1 answer
React overflow scroll
Javascript React
0 vote166 views1 answer
How to use rgba in react native
Javascript React
2 votes154 views2 answers
Past value from parent in reactjs
Javascript React