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react useState update object in array of objects

this.setState({items: this.state.items.map(x => x.id === someId ? {...x, attr:'val'} : x)});

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update array useSTATE

<body>
<div id="root"></div>

<script>
const { useState } = React;

const App = () => {
    const [myArray, updateMyArray] = useState([]);

    const onClick = () => {
        updateMyArray( arr => [...arr, `${arr.length}`]);
    };
    return [
        <input type="button" onClick={ onClick } value="Update" />,

        <div>{myArray.map( e =>
          <div>{ e }</div>
        )}
        </div>
    ];
}

ReactDOM.render(
    <App />,
    document.getElementById("root")
);
</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.8.1/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.8.1/umd/react-dom.production.min.js"></script>
</body>

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React update state array of objects hooks

React fin and update state value

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React update state array of objects hooks

React find and update state value

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How do you update a value inside an array of objects with useState?

update an object within an array

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react useState update object in array of objects

update array useSTATE

React update state array of objects hooks

React update state array of objects hooks

How do you update a value inside an array of objects with useState?

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