To update the state of a nested JSON object in React using hooks, you can use the following steps:
- Import the
useState
hook from thereact
library.
import { useState } from 'react';
- Declare a state variable and a setter function for the nested JSON object using the
useState
hook
const [nestedObject, setNestedObject] = useState({
key1: {
subkey1: 'value1',
subkey2: 'value2'
},
key2: {
subkey3: 'value3',
subkey4: 'value4'
}
});
- To update the state of the nested object, you can use the setter function and pass in a new object with the updated values. For example, to update the value of
subkey1
in thekey1
object, you can do the following:
setNestedObject({
...nestedObject,
key1: {
...nestedObject.key1,
subkey1: 'new value'
}
});
- You can also use the setter function to update the state of the entire nested object by simply passing in a new object.
setNestedObject({
key1: {
subkey1: 'new value1',
subkey2: 'new value2'
},
key2: {
subkey3: 'new value3',
subkey4: 'new value4'
}
});
Keep in mind that whenever you update the state using the setter function, React will re-render the component to reflect the changes.