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reactjsreact-hookssetstate

is it good to use following in react hooks or any alternative to update the UI

here is my code i am facing the issue that the UI not reRendering after the state changes

const [, setRand] = useState()
setRand(Math.random())
Solution

  • you cannot use useState as const [, setRand] = useState();

    Here is the description from ReactJs documentation.

    You need to use it like this 

    const [random, setRandom] = useState(0);
//or you can just set random in the beginning like
const [random, setRandom] = useState(Math.random());

    And make sure you are accessing it somewhere on return() method like:

    <p>{ random }</p>