1、js取当前时间的秒级时间戳
parseInt(new Date().getTime()/1000);,
//或
Date.parse(new Date())/1000;
2、将当前日期转换为时间戳。
(1)、当前时间的时间戳
var now = new Date();
console.log(now.getTime()) //当前时间的时间戳
// 将当前日期转换为时间戳，getTime()方法可返回距1970年1月1日之间的毫秒数。
//也可以使用 +now ，该效果等同于now.getTime()
(2)、将指定日期转换为时间戳。
var t = "2017-12-08 20:5:30"; // 月、日、时、分、秒如果不满两位数可不带0.
var T = new Date(t); // 将指定日期转换为标准日期格式。Fri Dec 08 2017 20:05:30 GMT+0800 (中国标准时间)
console.log(T.getTime()) // 将转换后的标准日期转换为时间戳。
3、将时间戳转换为日期。
var t = 787986456465; // 当参数为数字的时候，那么这个参数就是时间戳，被视为毫秒，创建一个距离1970年1月一日指定毫秒的时间日期对象。
console.log(new Date(t)) // Wed Dec 21 1994 13:07:36 GMT+0800 (中国标准时间)
var t2 = "2017-5-8 12:50:30";
console.log(new Date(t2)) // Mon May 08 2017 12:50:30 GMT+0800 (中国标准时间)
var t3 = "2017-10-1";
console.log(new Date(t3)) // Sun Oct 01 2017 00:00:00 GMT+0800 (中国标准时间) 不设定时分秒，则默认转换为00:00:00
4、将时间戳转换为指定格式日期的方法封装：
// 格式化日期，如月、日、时、分、秒保证为2位数
function formatNumber (n) {
n = n.toString()
return n[1] ? n : '0' + n;
}
// 参数number为毫秒时间戳，format为需要转换成的日期格式
function formatTime (number, format) {
let time = new Date(number)
let newArr = []
let formatArr = ['Y', 'M', 'D', 'h', 'm', 's']
newArr.push(time.getFullYear())
newArr.push(formatNumber(time.getMonth() + 1))
newArr.push(formatNumber(time.getDate()))
newArr.push(formatNumber(time.getHours()))
newArr.push(formatNumber(time.getMinutes()))
newArr.push(formatNumber(time.getSeconds()))
for (let i in newArr) {
format = format.replace(formatArr[i], newArr[i])
}
return format;
}
//如需要调用上述方法，使用formatTime(1545903266795, 'Y年M月D日 h:m:s')
//或者formatTime(1545903266795, 'Y-M-D h:m:s')即可
5、小程序案例
需求及效果图：
下次追访时间 添加 6小时后，一天后，本周五 三个快捷选项
案例讲解：
如果下次追访时间 为周五周六周日 ，则不显示本周五选项；
html:
<view class="addloupantan areatan addzhftan" wx:if="{
{isaddzhuifang}}">
<view class="addmain">
<image src="../../images/lpsel-xx.png" mode="widthFix" class="addxx" bindtap="areatanxx" />
<view class="khinputbox">
<view class="zhuifangbox">
<view class="inptxt">追访记录</view>
<textarea class="areabox" value="{
{zfang_log}}" focus="true" bindinput="zhfareainp" />
<view class="nextzhfkjbox zhuibomtxt">
<view>快捷选择</view>
<!-- zfselkj -->
<text class="select" wx:for="{
{zfseltxtarr}}" wx:key="index" wx:if="{
{index != 2 || (index == 2 && weekday != '星期五' && weekday != '星期六' && weekday != '星期天') }}" data-index="{
{index}}" bindtap="zfselkj">{
{item}}</text>
</view>
<view class="zhuibomtxt">
<view>下次追访时间</view>
<picker class="select" mode="date" value="{
{next_zhuifang_day}}" start="{
{startdate}}" end="{
{enddate}}" bindchange="bindDateChange">
<view class="picker">{
{next_zhuifang_day}}</view>
</picker>
<view class="select bomnone smselect">{
{weekday}}</view>
<picker class="select smselect" mode="time" value="{
{zhuifang_time}}" start="00:00" end="23:59" bindchange="bindTimeChange">
<view class="picker">{
{zhuifang_time}}</view>
</picker>
</view>
</view>
</view>
<view class="addqueding" bindtap="addzhuifangtaninp">确定</view>
</view>
</view>
js:(util.js 时间戳转换格式)
文件位置：
const formatTime = (date) => {
const year = date.getFullYear()
const month = date.getMonth() + 1
const day = date.getDate()
const hour = date.getHours()
const minute = date.getMinutes()
const second = date.getSeconds()
return [hour, minute].map(formatNumber).join(':')
}
const formatDate = (date) => {
const year = date.getFullYear()
const month = date.getMonth() + 1
const day = date.getDate()
return [year, month, day].map(formatNumber).join('-')
}
const tomorrowDate = (date) => {
const year = date.getFullYear()
const month = date.getMonth() + 1
const day = date.getDate() + 1
return [year, month, day].map(formatNumber).join('-')
}
const endYear = (date) => {
const year = date.getFullYear() + 30
const month = date.getMonth() + 1
const day = date.getDate()
return [year, month, day].map(formatNumber).join('-')
}
const lfYear = (date) => {
const year = date.getFullYear() - 10
const month = date.getMonth() + 1
const day = date.getDate()
return [year, month, day].map(formatNumber).join('-')
}
function timeTodate(number, format) {
var formateArr = ['Y', 'M', 'D', 'h', 'm', 's']
var returnArr = []
var date = new Date(number * 1000)
returnArr.push(date.getFullYear())
returnArr.push(formatNumber(date.getMonth() + 1))
returnArr.push(formatNumber(date.getDate()))
returnArr.push(formatNumber(date.getHours()))
returnArr.push(formatNumber(date.getMinutes()))
returnArr.push(formatNumber(date.getSeconds()))
for (var i in returnArr) {
format = format.replace(formateArr[i], returnArr[i])
}
return format
}
function transTime(unixtime) {
var dateTime = new Date(parseInt(unixtime) * 1000)
var year = dateTime.getFullYear()
var month = dateTime.getMonth() + 1
var day = dateTime.getDate()
var hour = dateTime.getHours()
var minute = dateTime.getMinutes()
var second = dateTime.getSeconds()
var now = new Date()
var now_new = Date.parse(now.toDateString())
var milliseconds = now_new - dateTime
var timeSpanStr = year + '-' + month + '-' + day
return timeSpanStr
}
const formatNumber = (n) => {
n = n.toString()
return n[1] ? n : '0' + n
}
function getWeek(todate) {
let weetoday = new Date(todate.replace(/-/g, '/'))
// console.log(weetoday);
var day = weetoday.getDay()
// console.log(new Date('2018-09-03'.replace(/-/g, "/")).getTime());
// var day = getDate(todate).getDay();
switch (day) {
case 0:
return '星期天'
break
case 1:
return '星期一'
break
case 2:
return '星期二'
break
case 3:
return '星期三'
break
case 4:
return '星期四'
break
case 5:
return '星期五'
break
case 6:
return '星期六'
break
}
}
module.exports = {
formatTime: formatTime,
formatDate: formatDate,
tomorrowDate: tomorrowDate,
endYear: endYear,
lfYear: lfYear,
timeTodate: timeTodate,
transTime: transTime,
getWeek: getWeek,
}
wxjs:
let util = require('../../utils/util.js')
Page({
data{
isaddzhuifang:1,
zfang_log: '', //追访记录
zfseltxtarr: ['6小时后', '一天后', '本周五'],
weekday: '',
next_zhuifang_day: 0,
zhuifang_time:0,
startdate:0,
enddate:0,
}
onLoad: function (options) {
let tomdate = util.tomorrowDate(new Date()) //明天
let startdate = util.formatDate(new Date()) //今天
let enddate = util.endYear(new Date()) //今年+30年
this.setData({
startdate: startdate,
enddate: enddate,
next_zhuifang_day: tomdate,
zhuifang_time: '12:00',
})
let today = util.getWeek(this.data.next_zhuifang_day)
this.setData({
weekday: today,
})
},
areatanxx: function () {
this.setData({
istextarea: 0,
isaddzhuifang: 0,
})
},
zhfareainp: function (e) {
this.setData({
zfang_log: e.detail.value,
})
},
// 下次追访时间
zfselkj: function (e) {
let zfselidx = e.currentTarget.dataset.index
let zfdaytime = new Date(this.data.next_zhuifang_day + ' ' + this.data.zhuifang_time) //日期时间
console.log(zfdaytime.getTime())
console.log(zfdaytime.getTime() / 1000)
zfdaytime = parseInt(zfdaytime.getTime() / 1000) //转为时间戳 秒
// let zftime, zfday
if (zfselidx == 0) {
// console.log(zfdaytime)
zfdaytime = zfdaytime + 6 * 3600
zfdaytime = new Date(zfdaytime * 1000) //转为时间戳
// console.log(zfdaytime)
this.setData({
next_zhuifang_day: util.formatDate(zfdaytime),
zhuifang_time: util.formatTime(zfdaytime),
weekday: util.getWeek(util.formatDate(zfdaytime)),
})
} else if (zfselidx == 1) {
zfdaytime = zfdaytime + 24 * 3600
zfdaytime = new Date(zfdaytime * 1000) //转为时间戳
// console.log(zfdaytime)
this.setData({
next_zhuifang_day: util.formatDate(zfdaytime),
zhuifang_time: util.formatTime(zfdaytime),
weekday: util.getWeek(util.formatDate(zfdaytime)),
})
} else if (zfselidx == 2) {
if (this.data.weekday == '星期一') {
zfdaytime = zfdaytime + 24 * 3600 * 4
zfdaytime = new Date(zfdaytime * 1000) //转为时间戳
// console.log(zfdaytime)
this.setData({
next_zhuifang_day: util.formatDate(zfdaytime),
zhuifang_time: util.formatTime(zfdaytime),
weekday: util.getWeek(util.formatDate(zfdaytime)),
})
} else if (this.data.weekday == '星期二') {
zfdaytime = zfdaytime + 24 * 3600 * 3
zfdaytime = new Date(zfdaytime * 1000) //转为时间戳
// console.log(zfdaytime)
this.setData({
next_zhuifang_day: util.formatDate(zfdaytime),
zhuifang_time: util.formatTime(zfdaytime),
weekday: util.getWeek(util.formatDate(zfdaytime)),
})
} else if (this.data.weekday == '星期三') {
zfdaytime = zfdaytime + 24 * 3600 * 2
zfdaytime = new Date(zfdaytime * 1000) //转为时间戳
// console.log(zfdaytime)
this.setData({
next_zhuifang_day: util.formatDate(zfdaytime),
zhuifang_time: util.formatTime(zfdaytime),
weekday: util.getWeek(util.formatDate(zfdaytime)),
})
} else if (this.data.weekday == '星期四') {
zfdaytime = zfdaytime + 24 * 3600 * 1
zfdaytime = new Date(zfdaytime * 1000) //转为时间戳
// console.log(zfdaytime)
this.setData({
next_zhuifang_day: util.formatDate(zfdaytime),
zhuifang_time: util.formatTime(zfdaytime),
weekday: util.getWeek(util.formatDate(zfdaytime)),
})
} else {
wx.showToast({
title: '不能选择以前的日期！',
icon: 'none',
})
}
}
},
bindDateChange: function (e) {
this.setData({
next_zhuifang_day: e.detail.value,
})
let today = util.getWeek(this.data.next_zhuifang_day)
// console.log(today);
this.setData({
weekday: today,
})
// this.onweekday(this.data.next_zhuifang_day);
// console.log(this.data.next_zhuifang_day)
},
bindTimeChange: function (e) {
this.setData({
zhuifang_time: e.detail.value,
})
console.log(this.data.zhuifang_time)
},
})
css:(less)
.addloupantan {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: rgba(0, 0, 0, 0.7);
z-index: 9;
.addmain {
position: absolute;
top: 50%;
left: 50%;
width: 600rpx;
height: 400rpx;
padding: 30rpx;
box-sizing: border-box;
background: #fff;
border-radius: 10rpx;
margin: -300rpx 0 0 -300rpx;
.zhuifangbox {
position: relative;
.inptxt {
width: 100%;
height: 80rpx;
line-height: 80rpx;
margin-top: 10rpx;
font-size: 32rpx;
color: #353535;
}
.areabox {
display: block;
padding: 10rpx;
width: 100%;
height: 142rpx;
box-sizing: border-box;
border: 1px solid #eee;
border-radius: 10rpx;
line-height: 40rpx;
margin-top: 10rpx;
font-size: 28rpx;
color: #353535;
}
}
.zhuibomtxt {
display: flex;
flex-direction: row;
width: 100%;
height: 80rpx;
line-height: 80rpx;
margin-top: 10rpx;
font-size: 32rpx;
color: #888;
.select {
width: 200rpx;
margin-left: 10rpx;
text-align: center;
border-bottom: 1px solid #eee;
}
.smselect {
width: 120rpx;
}
.bomnone {
border-bottom: none;
}
}
.nextzhfkjbox {
align-items: center;
.select {
position: relative;
width: auto;
padding: 0 20rpx;
height: 52rpx;
overflow: hidden;
border: 1px solid @red;
font-size: 28rpx;
line-height: 50rpx;
color: @red;
text-align: center;
margin-right: 22rpx;
border-radius: 10rpx;
box-sizing: border-box;
display: flex;
flex-direction: row;
align-items: center;
justify-content: space-around;
}
}
.addxx {
position: absolute;
right: 30rpx;
top: 30rpx;
width: 25rpx;
height: 25rpx;
overflow: hidden;
z-index: 2
}
.addtit {
font-size: 34rpx;
line-height: 80rpx;
// border-bottom: 1px solid #eee;
}
.addinp {
width: 100%;
height: 80rpx;
padding: 0 20rpx;
box-sizing: border-box;
font-size: 30rpx;
line-height: 80rpx;
margin-top: 40rpx;
border-bottom: 1px solid #eee;
}
.addqueding {
width: 200rpx;
height: 80rpx;
background: @red;
font-size: 34rpx;
color: #fff;
text-align: center;
line-height: 80rpx;
border-radius: 10rpx;
margin: 50rpx auto 0;
}
}
.xiangcetan {
width: 100%;
height: 100%;
top: 0;
left: 0;
padding: 140rpx 0 100rpx 0;
margin: 0;
background: none;
border-radius: 0;
.addxx {
position: fixed;
top: 50rpx;
left: 50rpx;
right: 0;
width: 60rpx;
height: 60rpx;
}
.xiangcesw {
position: relative;
width: 100%;
height: 100%;
overflow: hidden;
.swiper-slide {
position: relative;
width: 100%;
height: 100%;
line-height: 100%;
text-align: center;
-webkit-box-flex: 1;
display: table-cell;
vertical-align: middle;
.wximg {
display: inline;
max-width: 100%;
max-height: 90%;
}
}
}
.xiangcepage {
position: absolute;
width: 100rpx;
// background:#222;
right: 20rpx;
bottom: 0;
height: 100rpx;
line-height: 100rpx;
font-size: 30rpx;
color: #fff;
}
}
}
选项时间计算讲解：
let zfselidx = e.currentTarget.dataset.index
let zfdaytime = new Date(this.data.next_zhuifang_day + ' ' + this.data.zhuifang_time) //日期时间
console.log(zfdaytime.getTime())
console.log(zfdaytime.getTime() / 1000)
zfdaytime = parseInt(zfdaytime.getTime() / 1000) //转为时间戳 秒
// console.log(zfdaytime)
zfdaytime = zfdaytime + 6 * 3600
zfdaytime = new Date(zfdaytime * 1000) //转为时间戳
// console.log(zfdaytime)
this.setData({
next_zhuifang_day: util.formatDate(zfdaytime),
zhuifang_time: util.formatTime(zfdaytime),
weekday: util.getWeek(util.formatDate(zfdaytime)),
})
将当前选择的时间 转成时间戳后 再相应的计算 ，之后，再转回时间，对应的赋值便可。