“Gunakan objek” Kode Jawaban

Gunakan objek

- 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

PrevState di Usestate

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

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

Usestate dengan objek

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

Usestate dengan objek

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

Jawaban yang mirip dengan “Gunakan objek”

Pertanyaan yang mirip dengan “Gunakan objek”

Lebih banyak jawaban terkait untuk “Gunakan objek” di JavaScript

Jelajahi jawaban kode populer menurut bahasa

Jelajahi bahasa kode lainnya

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