Javascript/フォームデータ記憶

const text01 = document.getElementById("text01");
const text02 = document.getElementById("text02");
const text03 = document.getElementById("text03");
const text04 = document.getElementById("text04");
const text05 = document.getElementById("text05");

function cookieSet(){
  document.cookie = 'val01=' + text01.value + ";max-age=800";
  document.cookie = 'val02=' + text02.value + ";max-age=800";
  document.cookie = 'val03=' + text03.value + ";max-age=800";
  document.cookie = 'val04=' + text04.value + ";max-age=800";
  document.cookie = 'val05=' + text05.value + ";max-age=800";
}

(function(){
  var cooArray = new Array();
  if(document.cookie != ''){
  	var sp = document.cookie.split('; ');
  	for(var i=0; i