Why does the localStorage value disappear when the page is refreshed?

Question

JavaScript

Hello everyone
Inspired by the advice of one lion ( DevMan, hello, if you are reading), I decided to make a competitor to Evernote using localStorage, but there is a problem.
I have this funk to save value from input:

function saveValue() {
  save_button.addEventListener('click', function (e) {
    e.preventDefault();
    var input = document.getElementById('note_' + count);
    var placeHolder = document.getElementById('text');
    localStorage.setItem("note_number_" + count, input.value);
    var hello = localStorage.getItem("note_number_" + count);
    return placeHolder.innerHTML = hello;
  })
}

Here is the value that appears on the page: click-clack
But when the page is refreshed, the value will disappear. The value remains in the console. What's the magic?
Thanks

Answer 1

This is the code for writing the value, but show more code for reading. And where does the count variable come from?