React Js - Basic Form Validation

-

 App.js:


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

function App()
{
  const [name, setName]=useState("")
  const [password, setPassword]=useState("")
  const [userErr, setUserErr]=useState(false)
  const [passErr, setPassErr]=useState(false)

  function formHandle(e)
  {
    e.preventDefault();
    if(name.length<3 || password.length<3)
    {
      console.warn("Enter Correct Values")
      alert("Enter Correct Values")
    }
    else{
      console.warn("All Good, Login Sucessfully")
      alert("Login Sucessfully")
    }

  }
  function userHandle(e)
  {
    let item=e.target.value;
    if(item.length<3)
    {
      console.warn("Invalid")
      setUserErr(true)
    }
    else{
      setUserErr(false)
    }
    console.warn(e.target.value);
    setName(item)
  }
  function passwordHandler(e)
  {
    let item=e.target.value;
    if(item.length<3)
    {
      setPassErr(true)
    }
    else{
      setPassErr(false)
    }
    setPassword(item)
  }
  return(
    <div className='App'>
      <form onSubmit={formHandle}>
      <br/><br/>
        <input type="text" placeholder="Enter Name" onChange={userHandle}/> {userErr?<span>Invalid User Name</span>:""}<br/><br/>
        <input type="text" placeholder='Enter Password' onChange={passwordHandler}/>{passErr?<span>Invalid Password</span>:""} <br/><br/>
        <button>Submit</button>
      </form>
    </div>
  )
}

export default App;


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