useref 28 29 in react

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showing results for - "useref 28 29 in react"
Juan Sebastián
26 Oct 2016
1/*
2	A common use case is to access a child imperatively: 
3*/
4
5function TextInputWithFocusButton() {
6  const inputEl = useRef(null);
7  const onButtonClick = () => {
8    // `current` points to the mounted text input element
9    inputEl.current.focus();
10  };
11  return (
12    <>
13      <input ref={inputEl} type="text" />
14      <button onClick={onButtonClick}>Focus the input</button>
15    </>
16  );
17}
Johnnie
24 Nov 2016
1import React, {useRef, useEffect} from "react";
2
3export default function (props) {
4  // Initialized a hook to hold the reference to the title div.
5  const titleRef = useRef();
6  
7  useEffect(function () {
8    setTimeout(() => {
9      titleRef.current.textContent = "Updated Text"
10    }, 2000); // Update the content of the element after 2seconds 
11  }, []);
12  
13  return <div className="container">
14    {/** The reference to the element happens here **/ }
15    <div className="title" ref={titleRef}>Original title</div>
16  </div>
17}
Silvia
03 Nov 2020
1import React, { useState, useEffect, useRef } from 'react'
2import isDeepEqual from 'fast-deep-equal/react'import { getPlayers } from '../api'
3import Players from '../components/Players'
4
5const Team = ({ team }) => {
6  const [players, setPlayers] = useState([])
7  const teamRef = useRef(team)
8  if (!isDeepEqual(teamRef.current, team)) {    teamRef.current = team  }
9  useEffect(() => {
10    if (team.active) {
11      getPlayers(team).then(setPlayers)
12    }
13  }, [teamRef.current])
14  return <Players team={team} players={players} />
15}
Fernando
07 Jun 2018
1function TextInputWithFocusButton() {
2  const inputEl = useRef(null);
3  const onButtonClick = () => {
4    // `current` points to the mounted text input element
5    inputEl.current.focus();
6  };
7  return (
8    <>
9      <input ref={inputEl} type="text" />
10      <button onClick={onButtonClick}>Focus the input</button>
11    </>
12  );
13}
Davide
29 Nov 2019
1const refContainer = useRef(initialValue);
2//useRef returns a mutable ref object whose .current property is initialized to the passed argument (initialValue). 
3//The returned object will persist for the full lifetime of the component.
Andy
31 Sep 2019
1import { useRef } from 'react';
2
3function LogButtonClicks() {
4  const countRef = useRef(0);  
5  const handle = () => {
6    countRef.current++;    console.log(`Clicked ${countRef.current} times`);
7  };
8
9  console.log('I rendered!');
10
11  return <button onClick={handle}>Click me</button>;
12}
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