Kcko

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Kcko

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Kcko

import { useRef, useState } from "react"
import { checkEmail, checkPassword } from "./validators"

export function RefForm() {
  const emailRef = useRef()
  const passwordRef = useRef()

  const [emailErrors, setEmailErrors] = useState([])
  const [passwordErrors, setPasswordErrors] = useState([])
  const [isAfterFirstSubmit, setIsAfterFirstSubmit] = useState(false)

Kcko

import { useLocalStorage } from "./useLocalStorage"

function App() {
  const [firstName, setFirstName] = useLocalStorage("FIRST_NAME", "")

  const [lastName, setLastName] = useLocalStorage("LAST_NAME", () => {
    return "Default"
  })

  const [hobbies, setHobbies] = useLocalStorage("HOBBIES", [

Kcko

import { useState, useCallback } from "react"

export function useArray(initialValue) {
  const [array, setArray] = useState(initialValue)

  const push = useCallback(element => {
    setArray(a => [...a, element])
  }, [])

  const replace = useCallback((index, newElement) => {

Kcko

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Kcko

import { useEffect, useState } from "react";
import BlogList from "./BlogList";
import useFetch from "./useFetch";

const Home = () => {
  const { error, isPending, data: blogs } = useFetch('http://localhost:8000/blogs')

  return (
    <div className="home">
      { error && <div>{ error }</div> }

Kcko

import { useState } from "react";

function Cart() {
  const [cart, setCart] = useState({
    items: [],
    total: 0,
    discount: null,
    isLoading: false,
  });

Kcko

https://jsbin.com/qiyeriziyi/edit?html,css,output
https://jsbin.com/jewegaseyo/edit?html,css,output

Kcko

https://jsbin.com/cawipexoma/edit?html,css,output