//new Date():系统当前时间，先将当前时间转化为时间戳的形式

var timestamp = Date.parse(new Date());

//想在系统当前时间基础上，想加的天数或小时

var dayNum = 天数;

var timeNum = 小时;

console.log('当前时间戳', timestamp, dayNum, timeNum)

//天数*24小时

timestamp = timestamp + (dayNum * 24) * 60 * 60 * 1000;

//小时*60分钟

timestamp = timestamp + (timeNum * 60) * 60 * 1000;

//转化成年月日 时分秒 的形式

var dayText = timeStamp.formatTime(timestamp, 'Y-M-D h:m:s')

console.log('下次提醒时间：',dayText)时间戳转日期形式

代码展示：

function formatTime(number, format) {

var n = number;

var date = new Date(n);

var y = date.getFullYear();

var m = date.getMonth() + 1;

m = m < 10 ? ('0' + m) : m;

var d = date.getDate();

d = d < 10 ? ('0' + d) : d;

var h = date.getHours();

h = h < 10 ? ('0' + h) : h;

var minute = date.getMinutes();

var second = date.getSeconds();

minute = minute < 10 ? ('0' + minute) : minute;

second = second < 10 ? ('0' + second) : second;

return y + '-' + m + '-' + d + ' ' + h + ':' + minute+ ':'+ second;

}

module.exports = {

formatTime: formatTime

}

上面是添加日期最准确的方式，通过时间戳来转换

还有一种方式，就比较简陋，是直接在日期的基础上相加，这样会有误差

代码展示：

function getAnyDay(n) {

var nowDate = new Date();

nowDate = nowDate.setDate(nowDate.getDate() + n);

nowDate = new Date(nowDate);

var  y = nowDate.getFullYear(),

m = nowDate.getMonth() + 1,

d = nowDate.getDate();

m = m < 10 ? '0' + m : m;

d = d < 10 ? '0' + d : d;

return y + '-' + m + '-' + d;

}

function getAnyHour(n) {

var nowDate = new Date();

nowDate = nowDate.setHours(nowDate.getHours() + n);

nowDate = new Date(nowDate);

var  y = nowDate.getFullYear(),

m = nowDate.getMonth() + 1,

d = nowDate.getDate(),

h = nowDate.getHours(),

mi = nowDate.getMinutes(),

s = nowDate.getSeconds(),

m = m < 10 ? '0' + m : m;

d = d < 10 ? '0' + d : d;

h = h < 10 ? '0' + h : h;

mi = mi < 10 ? '0' + mi : mi;

s = s < 10 ? '0' + s : s;

return y + '-' + m + '-' + d + ' ' + h + ':' + mi + ':' + s;

}

module.exports = {

getAnyDay: getAnyDay,

getAnyHour: getAnyHour

}

引入文件：

var formate = require('../../../PublicFile/DayTime.js')

调用：

// var dayText = formate.getAnyDay(parseInt(visitArray.day));

// var timeText = formate.getAnyHour(parseInt(visitArray.time));

// dayText = dayText + ' ' + timeText.substr(11, 8)

不过，不建议用这种方式~，还是第一种用时间戳转换更为准确