Html5新出的Storage对象，分成2种：sessionStorage和localStorage。注意：首字母都是小写--->window.sessionStorage和window.localStorage
API一致：getItem, setItem, clear, length, removeItem, key
sessionStorage.key(1)--->返回第2个item的key
试验了localStorage，发现大多数浏览器都能用这个对象了
无论是刷新页面也好，关闭浏览器也好，都会remember住localStorage的values
代码如下：
<body> <label id="lbl">-</label> <input type="button" onclick="javascript:AddOne();RefreshCount();" value="Add" /> <script language="javascript" type="text/javascript"> <!-- function AddOne() { if (window.localStorage.Count == null || window.localStorage.Count == undefined) window.localStorage.Count = 0; window.localStorage.Count = parseInt(window.localStorage.Count) + 1; } function RefreshCount() { document.getElementById("lbl").innerHTML = window.localStorage.Count; } if (window.localStorage == null || window.localStorage == undefined) alert("window.localStorage not support."); else RefreshCount(); //--> </script> </body>