格式化时间日期:
function getDate(dt) {
    //获取年份
    var year = dt.getFullYear();
    //获取月份
    var month = dt.getMonth();
    //获取日
    var day = dt.getDate();
    //获取小时
    var hour = dt.getHours();
    //获取分钟
    var minute = dt.getMinutes();
    //获取秒
    var second = dt.getSeconds();
    month = month < 10 ? "0" + month : month;
    day = day < 10 ? "0" + day : day;
    hour = hour < 10 ? "0" + hour : hour;
    minute = minute < 10 ? "0" + minute : minute;
    second = second < 10 ? "0" + second : second;
    return year + "年" + month + "月" + day +"日" + hour + ":" + minute + ":" + second;
}
console.log(getDate(new Date()));