本地存储localStorage

将需要的信息本地存储住:给本地localStorage一个'strMenuKey'
//存储，IE6~7 cookie 其他浏览器HTML5本地存储
if (window.localStorage) {
    localStorage.setItem(strMenuKey, arrDisplay);   
} else {
    Cookie.write(strMenuKey, arrDisplay);   
}


读取出来
var strStoreDate = window.localStorage? localStorage.getItem(strMenuKey): Cookie.read(strMenuKey);

但是这个是字符串形的,需要给变化为数组
strStoreDate.split(",").each(function(display, index) {
    if (display.toInt() === 0) {
        eleLeftMenuTit[index].fireEvent("click");
    }
}); 

如果存储json数据,可以先data = json.stringify(a)
读取的时候用 json.parse(data)

http://www.zhangxinxu.com/wordpress/2011/09/html5-localstorage%E6%9C%AC%E5%9C%B0%E5%AD%98%E5%82%A8%E5%AE%9E%E9%99%85%E5%BA%94%E7%94%A8%E4%B8%BE%E4%BE%8B/ 参考文章