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<!DOCTYPE html> <html> <body> <h1>The Window Object</h1> <h2>The sessionStorage Object</h2> <p>A Counter:</p> <p id="demo">0</p> <p><button onclick="clickCounter()" type="button">Count</button></p> <p>Click to see the counter increase.</p> <p>Close the browser tab (or window), and try again, and the counter is reset.</p> <script> function clickCounter() { if (sessionStorage.clickcount) { sessionStorage.clickcount = Number(sessionStorage.clickcount) + 1; } else { sessionStorage.clickcount = 1; } document.getElementById("demo").innerHTML = sessionStorage.clickcount; } </script> </body> </html>
