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<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>