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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>菜鸟教程(runoob.com)</title> 	
<script>
function clickCounter()
{
	if(typeof(Storage)!=="undefined")
	{
		if (localStorage.clickcount)
		{
			localStorage.clickcount=Number(localStorage.clickcount)+1;
		}
		else
		{
			localStorage.clickcount=1;
		}
		document.getElementById("result").innerHTML=" 你已经点击了按钮 " + localStorage.clickcount + " 次 ";
	}
	else
	{
		document.getElementById("result").innerHTML="对不起,您的浏览器不支持 web 存储。";
	}
}
</script>
</head>
<body>
<p><button onclick="clickCounter()" type="button">点我!</button></p>
<div id="result"></div>
<p>点击该按钮查看计数器的增加。</p>
<p>关闭浏览器选项卡(或窗口),重新打开此页面,计数器将继续计数(不是重置)。</p>
</body>
</html>
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原文地址:http://www.cnblogs.com/kevoin/p/5828663.html