JAVASCRIPT

update object in react hooks

- Through Input

        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"
        />
   ***************************

 - Through onSubmit or button click
    
        setState(prevState => ({
            ...prevState,
            fName: 'your updated value here'
         }));

Update an object as state with React hooks

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"
/>