<!DOCTYPE html>
<html>
<head>
<script>
function clickCounter() { if(typeof(Storage) !== "undefined") { if (localStorage.clickcount) { localStorage.clickcount = Number(localStorage.clickcount)+1;
} else { localStorage.clickcount = 1;
}
document.getElementById("result").innerHTML = "You have clicked the button " + localStorage.clickcount + " time(s)."; } else { document.getElementById("result").innerHTML = "抱歉，您的浏览器不支持网络存储..."; }
}
</script>
</head>
<body>
<p><button onclick="clickCounter()" type="button">单击我！</button></p>
<div id="result"></div>
<p>点击按钮可以看到计数器增加。</p>
<p>关闭浏览器选项卡（或窗口），重试，计数器会继续计数（不会重置）。</p>
</body>
</html>