/Javascript/React/React usestate functional update

React usestate functional update

() => setCount(prevCount => prevCount - 1)

Source: reactjs.org

Update state in useState hook

// declare state using useState hook.
// someState is set to someInitialState
const [someState, setSomeState] = useState(someInitialState);

// setSomeState updates the current state 
setSomeState(someOtherState);

Source: reactjs.org

Similar codes

3 votes226 views5 answers
./src/App.js Attempted import error: 'Switch' is not exported from 'react-router-dom'.
Javascript React
21 votes213 views6 answers
React native apk build
Javascript React
4 votes206 views4 answers
Deploy react app
Javascript React
0 vote187 views0 answer
React
Javascript React
0 vote241 views2 answers
Enzyme-adapter-react-16
Javascript React
0 vote250 views1 answer
Ticking clock react js
Javascript React
0 vote239 views1 answer
Cannot find module '@babel/runtime-corejs2/helpers/interoprequiredefault' in react native
Javascript React
13 votes210 views4 answers
React native android build apk
Javascript React
1 vote235 views1 answer
Committing in react
Javascript React
15 votes255 views3 answers
Image source react native
Javascript React