“usestate com objeto” Respostas de código

Atualizar objeto em ganchos de reação

- 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

previstate no uso

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

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

Salo Hopeless

usestate com 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 Atualize objeto

- 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

ATUALIZAÇÃO ESTADO NO UNESTATE GAY

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

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

Tomanator

usestate com 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 com objeto” Respostas de código

Atualizar objeto em ganchos de reação

previstate no uso

usestate com objeto

JavaScript React Usestate Atualize objeto

ATUALIZAÇÃO ESTADO NO UNESTATE GAY

usestate com objeto

Respostas semelhantes a “usestate com objeto”

Perguntas semelhantes a “usestate com objeto”

Procure respostas de código populares por idioma

Shell/Bash

C#

C++

C

CSS

HTML

Java

JavaScript

Objective-C

PHP

Python

Sql

Swift

Ruby

TypeScript

Go

Kotlin

Assembly

R

VBA

Scala

Rust

Dart

Elixir

Clojure

Haskell

Matlab

Erlang

Cobol

Fortran

Scheme

Perl

Groovy

Lua

Julia

Delphi

Abap

Lisp

Prolog

Pascal

ActionScript

Basic

Solidity

PowerShell

GDScript

Excel

Procurar outros idiomas de código