Friday, October 2, 2020

Handling Form Inputs in React in less lines of code

 Handling Form Inputs in React (less lines of code)




import React, { useState } from 'react'

const MyFormObject = () => {

    const USER = {
        id: "1",
        name: "Dinesh",
        salary: 10000
    }

    const [usersetUser] = useState(USER)

    const onSubmitHandler = (event=> {
        event.preventDefault();
        console.log(user)
    }

//handling Form Input 
    const handleInput = (event=> {
        let name = event.target.name;
        let value = event.target.value;
        setUser((preValue=> {
            console.log(preValue);
            return {
                ...preValue//Spread Operator 
                [name]: value,
            };
        }
        )
        console.log(event.target.value)
    }

    return (
   <> //Fragment
    <form onSubmit={onSubmitHandler}>

       UserID:   
<input type="text" name="id" value={user.id} onChange={handleInput} /><br />
       Name 
<input type="text" name="name" value={user.name} onChange={handleInput} /><br />
       Salary 
<input type="text" name="salary" value={user.salary} onChange={handleInput} /><br />
                
<input type="submit" value="Submit" />

    </form>
  </>
    )

}

export default MyFormObject


App.js Code Snippet:

const LearningComponent = () => {
  return (
    <div>
     <h1> Learning Component </h1>
      <MyFormObject />
    </div>
  )
}

export default App;

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