What do you want to save?
Add Code snippet
New code examples
-
Javascript 2021-09-16 00:31:02
react useeffect not on first render
//This is a way to build this effect as a custom hook import React, { useEffect, useRef } from 'react'; const useDidMountEffect = (func, deps) => { const didMount = useRef(false); useEffect(() => { if (didMount.current) func(); ... Add solution -
Javascript 2021-09-15 23:56:02
mock createRef jest react functional component
import React, { useRef } from 'react'; import { shallow } from 'enzyme'; import Child2 from './'; jest.mock('react', () => { const originReact = jest.requireActual('react'); const mUseRef = jest.fn(); return { ...originReact, useRef: mUs... Add solution -
Javascript 2021-09-11 04:47:03
handleClickoutside custom hook react
import { useState, useEffect, useRef } from 'react'; export default function useComponentVisible(initialIsVisible) { const [isComponentVisible, setIsComponentVisible] = useState(initialIsVisible); const ref = useRef<HTMLDivElement>(null); ... Add solution -
Javascript 2021-09-09 18:08:02
search bar idle time react js
How about a custom hook? import {useEffect, useRef, useState} from "react"; export default function useSearchInputState(searchHandler) { // to prevent calling the handler on component mount const didMountRef = useRef(false); const [s... Add solution -
Javascript 2021-09-06 12:04:02
stop playing music when page is closed react
import React, { useRef, useEffect } from 'react'; import waves from '../audio/waves.mp3'; const RockyCoast = (props) => { // the audio variable needs to be stored in a ref in order to access it across renders let audio = useRef(); // s... Add solution -
Javascript 2021-08-29 11:11:01
react usememo
/* 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(); ... Add solution