“Usestate con objeto” Código de respuesta

Actualizar objeto en 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'
         }));

Difficult Dunlin

PrevieSstate en USestate

const [prevState, setState] = React.useState([]);

setState(prevState => [...prevState, 'somedata'] );

Salo Hopeless

Usestate con objeto

import React, { useState } from "react";

function Form() {
  const [user, setUser] = useState({
    name: "",
    email: "",
    password: "",
  });
  const { name, email, password } = user;
  const handleChange = (e) => {
    const { name, value } = e.target;
    setUser({
      ...user,
      [name]: value,
    });
  };

  const handleSubmit = (e) => {
    e.preventDefault();
    console.log("Form Submitted");

    console.log(user);
  };

  return (
    <div>
      <h1>Registraction</h1>
      <form action="" onSubmit={handleSubmit}>
        <div className="formGroup">
          <label htmlFor="name">Name: </label>
          <input
            type="text"
            name="name"
            id="name"
            value={name}
            onChange={handleChange}
            required
          />
        </div>
        <div className="formGroup">
          <label htmlFor="email">Email: </label>
          <input
            type="email"
            name="email"
            id="email"
            value={email}
            onChange={handleChange}
            required
          />
        </div>
        <div className="formGroup">
          <label htmlFor="password">Password: </label>
          <input
            type="password"
            name="password"
            id="password"
            value={password}
            onChange={handleChange}
            required
          />
        </div>
        <div className="formGroup">
          <button className="count_btn" type="Submit">
            Register
          </button>
        </div>
      </form>
    </div>
  );
}
export default Form;

Noruzzaman Rubel

JavaScript React Usestate Update Object

- 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'
         }));

Outrageous Opossum

Estado de actualización en USestate Hook

// declare state using useState hook.
// someState is set to someInitialState
const [someState, setSomeState] = useState(someInitialState);

// setSomeState updates the current state 
setSomeState(someOtherState);

Tomanator

Usestate con objeto

import { useState } from 'react';
import './App.css';

function App() {
  const [details, setDetails] = useState({ email: "", password: "" })
  const onChange = (e) => {
    const { name, value } = e.target;
    setDetails({ ...details, [name]: value })
  }
  const submitHandler = (e) => {
    e.preventDefault();
    alert(JSON.stringify(details))
  }
  return (
    <div className="App">
      <form onSubmit={submitHandler}>
        email : <input type="text" name="email" onChange={onChange} value={details.email} />
       //or <input type="text" name="email" onChange={(e) => setDetails({ ...details, email: e.target.value })} value={details.email} /><br /><br />
          password :<input type="text" name="password" onChange={onChange} value={details.password} />
        <button type="submit">Submit</button>
      </form>
      <h2>{details.email}</h2>
      <h2>{details.password}</h2>
    </div>
  );
}

export default App;

Abhishek

“Usestate con objeto” Código de respuesta

Actualizar objeto en React Hooks

PrevieSstate en USestate

Usestate con objeto

JavaScript React Usestate Update Object

Estado de actualización en USestate Hook

Usestate con objeto

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