How to store information in a remote storage?

Question

How can I store an entire number that when the user clicks on the button it is incremented only by section (for this I use the sessionStorage) but this incremented value is visible to everyone on the internet, not just in the cookie. This is the code I use:

function clickCounter() {
   if(typeof(Storage) !== "undefined") {
      if (localStorage.clickcount) {
         if (!sessionStorage.voted) {
            localStorage.clickcount = Number(localStorage.clickcount)+1;
         } else {
            jaVotou()
         }
      } else {
         localStorage.clickcount = 1;
      }
         sessionStorage.voted = 1;
         document.getElementById("result").innerHTML = countString();
         document.getElementById("botao").innerHTML = "<center><button onclick=\"clickCounter()\" class=\"myButton\" type=\"Button\">Obrigado</button></center>"
      } else {
          document.getElementById("result").innerHTML = "Navegador não suportado";
   }
}

But when clearing the browser navigation data these values are cleared. How do I make it not occur?