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showing results for - "usestate in object"
Issac
02 Sep 2017
1- Through Input
2
3        const [state, setState] = useState({ fName: "", lName: "" });
4        const handleChange = e => {
5            const { name, value } = e.target;
6            setState(prevState => ({
7                ...prevState,
8                [name]: value
9            }));
10        };
11
12        <input
13            value={state.fName}
14            type="text"
15            onChange={handleChange}
16            name="fName"
17        />
18        <input
19            value={state.lName}
20            type="text"
21            onChange={handleChange}
22            name="lName"
23        />
24   ***************************
25
26 - Through onSubmit or button click
27    
28        setState(prevState => ({
29            ...prevState,
30            fName: 'your updated value here'
31         }));
32
source
Linus
22 Sep 2019
1const [prevState, setState] = React.useState([]);
2
3setState(prevState => [...prevState, 'somedata'] );
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