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<!DOCTYPE html> <html> <body> <h1>The Storage Event</h1> <p>The Storage Event is triggered when there is a change in the window's storage area.</p> <p><strong>Note:</strong> The storage event is only triggered when a window <strong>other than itself</strong> makes the changes.</p> <p>Therefore, in this example, a new window is created, and the changes is done in the new window.</p> <h1>The storageArea Property</h1> <p>The storageArea property belongs to the Storage Event object, and returns the Storage object of the item that was changed.</p> <button onclick="changeValue()">Change a Storage Item</button> <p id="demo"></p> <script> window.addEventListener("storage", myFunction); function myFunction(event) { x = event.storageArea; document.getElementById("demo").innerHTML = x; } function changeValue() { var x = window.open("", "myWindow", "width=200,height=100"); x.localStorage.setItem("mytime", Date.now()); x.close(); } </script> </body> </html>
