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Javascript 2022-01-23 07:46:23
how to use useeffect
import React, { useState, useEffect } from 'react'; function Example() { const [count, setCount] = useState(0); // Similar to componentDidMount and componentDidUpdate: useEffect(() => { // Update the document title using the browser API... Add solution -
Javascript 2022-01-23 05:40:39
componentdidmount in hooks
import React, { useState, useEffect } from 'react'; function Example() { const [count, setCount] = useState(0); // Similar to componentDidMount and componentDidUpdate: useEffect(() => { // Update the document title using the browser AP... Add solution -
Javascript 2021-11-22 08:56:13
hide component blur react hooks
const React,{ useState, useMemo } = React const usToggleOnFocus = (initialState = false) => { const [show, toggle] = useState(initialState); const eventHandlers = useMemo(() => ({ onFocus: () => toggle(true), onBlur: () => togg... Add solution -
TypeScript 2021-11-21 13:33:07
refreshcontrol
import React from 'react'; import { RefreshControl, SafeAreaView, ScrollView, StyleSheet, Text } from 'react-native'; const wait = (timeout) => { return new Promise(resolve => setTimeout(resolve, timeout)); } const App = () => { const [refr... Add solution -
TypeScript 2021-11-21 07:10:14
react typescript custom hook
export function useLoading() { const [isLoading, setState] = React.useState(false); const load = (aPromise: Promise<any>) => { setState(true); return aPromise.finally(() => setState(false)); }; return [isLoading, load] as const... Add solution -
Javascript 2021-11-20 07:31:10
react hide element
React circa 2020 In the onClick callback, call the state hook's setter function to update the state and re-render: const Search = () => { const [showResults, setShowResults] = React.useState(false) const onClick = () => setShowResults(true) r... Add solution -
Javascript 2021-11-19 21:16:29
react native setstate object
import React, { useState } from 'react' const Example = () => { const [ account, setAccount ] = useState({ username: "", password: "" }) return( <div> <p>Debug { JSON.stringify(account) } <form> ... Add solution -
Javascript 2021-11-19 13:59:25
flatlist onrefresh react native
const [isFetching, setIsFetching] = useState(false); const fetchData = () => { dispatch(getAllTopicAction(userParamData)); setIsFetching(false); }; const onRefresh = () => { setIsFetching(true); fetchData(); }; <FlatList data={topics... Add solution