js 单例模式

//声明公共对象
let timePicking = {
    nums: 0, //试卷总袋数
    isCount: 0, //判断预览条件
    selectFlsg: -1,
    timeArr: [], //所选课程所有考试时间段
    timeStr: ‘‘, //选取的考试时间段
    imfomation: ‘ ‘, //课程代码，传递给预览信息接口
    phoInfo: [], //需填充手机号码的教师
    isPick: false
};
// session存储，实例FormMsg就执行，初始化数据
let sess = {
    flag: sessionStorage.getItem("flag"), //标识符
    num: sessionStorage.getItem("num"),
    nums: sessionStorage.getItem("nums"),
    name: sessionStorage.getItem("name"),
    stanby: sessionStorage.getItem("stanby"),
    time: sessionStorage.getItem("time"),
    notice: sessionStorage.getItem("notice"),
    num: sessionStorage.getItem("num"),
    pageA: sessionStorage.getItem("obj"),
    pageB: sessionStorage.getItem("pageB"),
    pageMy: sessionStorage.getItem("pageMy"),
    phoInfo: sessionStorage.getItem("phoInfo"),
    imfomation: sessionStorage.getItem("imfomation")
};