¿How to get Form values from functional component React?

Question

I'm trying to make a table that receives a new user data that is got in a form. Heres is my code:

import React,{useState}  from 'react'

export default function FormAdd({callbackSubmit,...props}) {

    const [user,setUser] = useState({});

    const handleChangeInput = (name,value) => {
        setUser((last) => {
           
            [name]:value,
        }
        );
    }

    return (
        <form 
        onSubmit={
            (e)=>{
                e.preventDefault();
                callbackSubmit(user)            
            }
        }
        className="formadd-container"
        >
            <input onChange={(e)=>{handleChangeInput(e.target.name,e.target.value)}} name={"firstname"} placeholder="Fist Name" type="text" className="formadd-container__input"/>
            <input onChange={(e)=>{handleChangeInput(e.target.name,e.target.value)}} name={"age"} placeholder="Age" type="text" className="formadd-container__input"/>
            <input onChange={(e)=>{handleChangeInput(e.target.name,e.target.value)}} name={"gender"} placeholder="Gender" type="text" className="formadd-container__input"/>
            <input onChange={(e)=>{handleChangeInput(e.target.name,e.target.value)}} name={"phone"} placeholder="Phone" type="text" className="formadd-container__input"/>
            <input  value="Add" type="submit" className="formadd-container__button"/>
        </form>
    )
}

I get an error >expected ";" inside handleChangeInput function, when I try to set the values for the user object.

Any ideas?

HichamELBSI · Accepted Answer · 2021-01-19 22:53:32Z

3

You miss the return in the setState callback.

Replace this :

const handleChangeInput = (name,value) => {
        setUser((last) => {
           
            [name]:value,
        }
        );
    }

By:

const handleChangeInput = (name,value) => {
        setUser((last) => ({
           
            [name]:value,
        })
        );
    }

edited Jan 19, 2021 at 22:53

answered Jan 19, 2021 at 22:47

HichamELBSI

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1 Comment

Victor Alfonso Pérez Espino Over a year ago

yeah, it works, thanks, I tried this too: ` setUser((last) => { return { [name]:value, ...last } } ); `

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