document.addEventListener('DOMContentLoaded', (event) => {

  const rmCheck = document.getElementById("remember_me"),
  emailInput = document.getElementById("id_username");

  if (localStorage.checkbox && localStorage.checkbox !== "") {
    rmCheck.setAttribute("checked", "checked");
    emailInput.value = localStorage.username;
  } else {
    rmCheck.removeAttribute("checked");
    emailInput.value = "";
  }

})

function lsRememberMe() {
  if (rmCheck.checked && emailInput.value !== "") {
    localStorage.username = emailInput.value;
    localStorage.checkbox = rmCheck.value;
  } else {
    localStorage.username = "";
    localStorage.checkbox = "";
  }
}