格式化日期

function getDate(dt){
    //获取年
    var year = dt.getFullYear();
    //获取月
    var month =dt.getMonth() +1;
    //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()));