Is it possible to handle Multiple useState hooks with one simple function?

Question

This question may sound silly, but it would help me a lot in my React projects and it would significantly reduce amount of code.

I have some code like following:

const [user, setUser] = useState({
      name: "",
      password: ""
      });

const [name, setName] = useState("");
const [password, setPassword] = useState("");

const handleInput = (e) => {

I would like to do this

      let inputHandler =`set${(e.target.name.slice(0,1)).toUpperCase()}${e.target.name.slice(1)}`;
      inputHandler(e.event.value);

like I am doing this

      setUser({...user,
           [e.target.name]:e.target.value
      });

};

<input onChange={handleInput} name="name"></input>
<input onChange={handleInput} name="password"></input>

The point is to update different states "genericly", like I am doing with one state properties. The code above is really simplified, in my project there are 10+ states to handle and I achieved that with 200 lines of code :D

Dennis Vash · Accepted Answer · 2020-10-10 12:54:31Z

1

Just pass a callback to your "generic function":

const handleInput = (e, set) => {
  set(`${e.target.name.slice(0, 1).toUpperCase()}${e.target.name.slice(1)}`);
};

// Usage
onClick={e => handleInput(e, setUser)}

// Or as curried function
const genInputHandler = set => e => {
  set(`${e.target.name.slice(0, 1).toUpperCase()}${e.target.name.slice(1)}`);
};

// Usage
onClick={genInputHandler(setUser)}

answered Oct 10, 2020 at 12:54

Dennis Vash

54.2k12 gold badges120 silver badges133 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Is it possible to handle Multiple useState hooks with one simple function?

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related