离开页面存session,再回到页面取session实现定位到tab

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//检测页面是否即将离开
$(window).bind('beforeunload', function () {
    var tagValue = $(".nav-cont ul li.on").attr("id");
    setStorageCookie("tag", tagValue);
    存session
});
获取session, 判断tab定位
//取cookie,判断tab
var tagValue = getStorageCookie("tag");
if (tagValue == "pinglun") {
    changecTabbar(2);
} else if (tagValue == "zhaopianqian") {
    changecTabbar(3);
} else {
    changecTabbar(1);
}
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