// sample datas structure
/* const datas = [
    {
      id:   1,
      name: 'john',
      gender: 'm'
    }
    {
      id:   2,
      name: 'mary',
      gender: 'f'
    }
] */ // make sure to set the default value in the useState call (I already fixed it)

const [datas, setDatas] = useState([
    {
      id:   1,
      name: 'john',
      gender: 'm'
    }
    {
      id:   2,
      name: 'mary',
      gender: 'f'
    }
]);

const updateFieldChanged = index => e => {

    console.log('index: ' + index);
    console.log('property name: '+ e.target.name);
    let newArr = [...datas]; // copying the old datas array
    newArr[index] = e.target.value; // replace e.target.value with whatever you want to change it to

    setDatas(newArr); // ??
}

return (
    <React.Fragment>
        { datas.map( (data, index) => {
              <li key={data.name}>
                <input type="text" name="name" value={data.name} onChange={updateFieldChanged(index)}  />
              </li>
          })
        }
    </React.Fragment>
)

Popularity 10/10 Helpfulness 4/10 Language typescript

Source: stackoverflow.com

Tags: setstate setstat

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Contributed on Mar 02 2021

Mystic Dev

0 Answers Avg Quality 2/10

react useState update object in array of objects

Comment

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

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on May 20 2022

Delightful Dove

0 Answers Avg Quality 2/10

Update an object as state with React hooks

Comment

const [state, setState] = useState({ fName: "", lName: "" });
const handleChange = e => {
    const { name, value } = e.target;
    setState(prevState => ({
        ...prevState,
        [name]: value
    }));
};

<input
    value={state.fName}
    type="text"
    onChange={handleChange}
    name="fName"
/>
<input
    value={state.lName}
    type="text"
    onChange={handleChange}
    name="lName"
/>

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Jun 03 2022

Envious Earthworm

0 Answers Avg Quality 2/10

set state array of objects react hooks

Comment

separate your array items by comma

Popularity 1/10 Helpfulness 1/10 Language typescript

Source: Grepper

Tags: react-hooks set state typescript

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Contributed on Aug 21 2022

Binte shahid

0 Answers Avg Quality 2/10

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

Comment

update an object within an array

Popularity 10/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Nov 10 2022

Paul Awolesi

0 Answers Avg Quality 2/10

update array hooks react

Comment

-1

new item

Popularity 9/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Feb 01 2022

YaZuwa

0 Answers Avg Quality 2/10

React update state array of objects hooks

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