Small sample of HTML5 Local Storage

localstorage.js

if(localStorage["demo.isRunning"] !== "true") {
  alert("Let's write something on the local storage");

  localStorage["demo.isRunning"] = true;
  localStorage["demo.value"] = "It works!";

  window.location.reload();
} else {
  alert("Value of stored value is '" + localStorage["demo.value"] + "'");

  localStorage.removeItem("demo.isRunning");
  localStorage.removeItem("demo.value");
}