/Javascript/React/How to use useref hook in react

How to use useref hook in react

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

Useref in react

import { useRef } from 'react';

function LogButtonClicks() {
  const countRef = useRef(0);  
  const handle = () => {
    countRef.current++;    console.log(`Clicked ${countRef.current} times`);
  };

  console.log('I rendered!');

  return <button onClick={handle}>Click me</button>;
}

Source: dmitripavlutin.com

Similar codes

1 vote189 views3 answers
React native SafeAreaView
Javascript React
1 vote183 views1 answer
React native detect swipe
Javascript React
0 vote211 views1 answer
Cloudinary react
Javascript React
36 votes184 views2 answers
How to install react router dom version 5
Javascript React
0 vote170 views1 answer
React script syntax for deployment
Javascript React
1 vote185 views3 answers
Bash: react-scripts: command not found
Javascript React
0 vote179 views1 answer
Make custom draggable in react
Javascript React
14 votes194 views5 answers
React conditional classname
Javascript React
1 vote191 views1 answer
React native app crashes without error
Javascript React
0 vote190 views1 answer
React big calendar messages
Javascript React