Using JS to set and use cookies

[karyoker]

I can set cookies in JS but cant wrap my mind around how to use them for example in this case the cookie value is a button that I want to put in a div so the client can use it. I know this question is vague but I am doing things never done before.

My main site is http://videosanctuary.com/bot.html Click image for video and you will get an idea what I am doing.

The partial site in question here is https://q17news.tech/template.php
(TOC)

<script>
     epv = document.getElementById("tr").innerHTML;
  document.getElementById("col2").innerHTML=epv;
   //document.cookie = "up=upv; expires=Sun, 1 January 2019 12:00:00 UTC;";
   //  document.cookie = "name=James; expires=Sun, 1 January 2019 12:00:00 UTC;";
       // deleteCookie("up");
       // deleteCookie("name");
   console.log(document.cookie);
     //alert(document.cookie);
      
    </script>    

<script> 
    function bake(){ 
        const epv =document.getElementById("tr").innerHTML; alert("epv"+" "+epv);
        epv = document.getElementById("tr").innerHTML;
        setCookie("ep", epv, 30);  alert("ep"+" "+ep);
    }
    function createFunction(){        
        var name = document.getElementById("n1").value;  
         document.getElementById("tr").innerHTML=UE+bt1 +time+bt2 + name +bt3;
       let upv =document.getElementById("tr").innerHTML; 
        setCookie("up", upv, 30);
        setCookie(cname,cvalue,exdays) 
          const d = new Date();
          d.setTime(d.getTime() + (exdays*24*60*60*1000));
          let expires = "expires=" + d.toUTCString();
          document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
             
        
    }
  function checkCookie() { alert(upv);
  let upv = getCookie("up");
  if (upv != "") {
     alert("yes");
  } else {
    alert("nope");
      deleteCookie("username");
     }
  }
function getCookie() {
  const getCookie = ep => {
  const cookies = document.cookie.split(';')
  for (let i = 0; i < cookies.length; i++) {
    let c = cookies[i].trim().split('=')
    if (c[0] === ep) {
      return decodeURIComponent(c[1])
    }
  }
  return ''
}
function setCookie(cname,cvalue,exdays) {
  const d = new Date();
  d.setTime(d.getTime() + (exdays*24*60*60*1000));
  let expires = "expires=" + d.toUTCString();
  document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
}      
</script>

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