/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

0 vote135 views1 answer
Limit values that satisy a url parameter react-router
Javascript React
-1 vote160 views1 answer
Component navigation without changin the url react router
Javascript React
11 votes128 views3 answers
Reactjs get url query params as object
Javascript React
2 votes136 views2 answers
React aws s3 npm
Javascript React
0 vote137 views1 answer
Install aos in react
Javascript React
0 vote132 views1 answer
Yarn react-native-async-storage
Javascript React
0 vote120 views1 answer
React native force vertical
Javascript React
0 vote146 views1 answer
How to start react project on atom
Javascript React
0 vote144 views1 answer
TrackPromise React
Javascript React
2 votes172 views1 answer
React select with custom option
Javascript React