var okConfig = {
   theme: "blue_theme", //主题色orange_theme|blue_theme
   menuArrow: "ok-arrow2", //导航箭头ok-arrow2:箭头,不填为默认样式
   tabMemory: true,  //是否开启tab刷新记忆
   tabRefresh: false, //是否开启切换刷新
};