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小程序怎么制作开发_JavaScript日期东西类DateUtil

日期:2021-01-08
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JavaScript日期工具类DateUtils定义与用法示例       这篇文章主要介绍了JavaScript日期工具类DateUtils定义与用法,涉及javascript针对日期时间的获取、转换、比较、运算等相关操作技巧,需要的朋友可以参考下

本文实例讲述了JavaScript日期工具类DateUtils定义与用法。分享给大家供大家参考,具体如下:

DateUtils = {
 patterns: {
 PATTERN_ERA: 'G', //Era 标志符 Era strings. For example: "AD" and "BC"
 PATTERN_YEAR: 'y', //年
 PATTERN_MONTH: 'M', //月份
 PATTERN_DAY_OF_MONTH: 'd', //月份的天数
 PATTERN_HOUR_OF_DAY1: 'k', //一天中的小时数(1-24)
 PATTERN_HOUR_OF_DAY0: 'H', //24小时制,一天中的小时数(0-23)
 PATTERN_MINUTE: 'm', //小时中的分钟数
 PATTERN_SECOND: 's', //秒
 PATTERN_MILLISECOND: 'S', //毫秒
 PATTERN_DAY_OF_WEEK: 'E', //一周中对应的星期,如星期一,周一
 PATTERN_DAY_OF_YEAR: 'D', //一年中的第几天
 PATTERN_DAY_OF_WEEK_IN_MONTH: 'F', //一月中的第几个星期(会把这个月总共过的天数除以7,不够准确,推荐用W)
 PATTERN_WEEK_OF_YEAR: 'w', //一年中的第几个星期
 PATTERN_WEEK_OF_MONTH: 'W', //一月中的第几星期(会根据实际情况来算)
 PATTERN_AM_PM: 'a', //上下午标识
 PATTERN_HOUR1: 'h', //12小时制 ,am/pm 中的小时数(1-12)
 PATTERN_HOUR0: 'K', //和h类型
 PATTERN_ZONE_NAME: 'z', //时区名
 PATTERN_ZONE_VALUE: 'Z', //时区值
 PATTERN_WEEK_YEAR: 'Y', //和y类型
 PATTERN_ISO_DAY_OF_WEEK: 'u',
 PATTERN_ISO_ZONE: 'X'
 week: {
 'ch': {
 "0": "\u65e5",
 "1": "\u4e00",
 "2": "\u4e8c",
 "3": "\u4e09",
 "4": "\u56db",
 "5": "\u4e94",
 "6": "\u516d"
 'en': {
 "0": "Sunday",
 "1": "Monday",
 "2": "Tuesday",
 "3": "Wednesday",
 "4": "Thursday",
 "5": "Friday",
 "6": "Saturday"
 //获取当前时间
 getCurrentTime: function() {
 var today = new Date();
 var year = today.getFullYear();
 var month = today.getMonth() + 1;
 var day = today.getDate();
 var hours = today.getHours();
 var minutes = today.getMinutes();
 var seconds = today.getSeconds();
 var timeString = year + "-" + month + "-" + day + " " + hours + ":" + minutes + ":" + seconds;
 return timeString;
 * 比较时间大小
 * time1 time2 return 1
 * time1 time2 return -1
 * time1==time2 return 0
 compareTime: function(time1, time2) {
 if(Date.parse(time1.replace(/-/g, "/")) Date.parse(time2.replace(/-/g, "/"))) {
 return 1;
 } else if(Date.parse(time1.replace(/-/g, "/")) Date.parse(time2.replace(/-/g, "/"))) {
 return -1;
 } else if(Date.parse(time1.replace(/-/g, "/")) == Date.parse(time2.replace(/-/g, "/"))) {
 return 0;
 //是否闰年
 isLeapYear: function(year) {
 return((year % 4 === 0 year % 100 !== 0) || year % 400 === 0);
 //获取某个月的天数,从0开始
 getDaysOfMonth: function(year, month) {
 return [31, (this.isLeapYear(year) 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month];
 getDaysOfMonth2: function(year, month) {
 // 将天置为0,会获取其上个月的最后一天
 month = parseInt(month) + 1;
 var date = new Date(year, month, 0);
 return date.getDate();
 /*距离现在几天的日期:负数表示今天之前的日期,0表示今天,整数表示未来的日期
 * 如-1表示昨天的日期,0表示今天,2表示后天
 fromToday: function(days) {
 var today = new Date();
 today.setDate(today.getDate() + days);
 var date = today.getFullYear() + "-" + (today.getMonth() + 1) + "-" + today.getDate();
 return date;
 * 日期时间格式化
 * @param {Object} dateTime 需要格式化的日期时间
 * @param {String} pattern 格式化的模式,如yyyy-MM-dd hh(HH):mm:ss.S a k K E D F w W z Z
 formt: function(dateTime, pattern) {
 var date = new Date(dateTime);
 if(Bee.StringUtils.isBlank(pattern)) {
 return date.toLocaleString();
 return pattern.replace(/([a-z])\1*/ig, function(matchStr, group1) {
 var replacement = "";
 switch(group1) {
 case Bee.DateUtils.patterns.PATTERN_ERA: //G
 break;
 case Bee.DateUtils.patterns.PATTERN_WEEK_YEAR: //Y
 case Bee.DateUtils.patterns.PATTERN_YEAR: //y
 replacement = date.getFullYear();
 break;
 case Bee.DateUtils.patterns.PATTERN_MONTH: //M
 var month = date.getMonth() + 1;
 replacement = (month 10 matchStr.length = 2) "0" + month : month;
 break;
 case Bee.DateUtils.patterns.PATTERN_DAY_OF_MONTH: //d
 var days = date.getDate();
 replacement = (days 10 matchStr.length = 2) "0" + days : days;
 break;
 case Bee.DateUtils.patterns.PATTERN_HOUR_OF_DAY1: //k(1~24)
 var hours24 = date.getHours();
 replacement = hours24;
 break;
 case Bee.DateUtils.patterns.PATTERN_HOUR_OF_DAY0: //H(0~23)
 var hours24 = date.getHours();
 replacement = (hours24 10 matchStr.length = 2) "0" + hours24 : hours24;
 break;
 case Bee.DateUtils.patterns.PATTERN_MINUTE: //m
 var minutes = date.getMinutes();
 replacement = (minutes 10 matchStr.length = 2) "0" + minutes : minutes;
 break;
 case Bee.DateUtils.patterns.PATTERN_SECOND: //s
 var seconds = date.getSeconds();
 replacement = (seconds 10 matchStr.length = 2) "0" + seconds : seconds;
 break;
 case Bee.DateUtils.patterns.PATTERN_MILLISECOND: //S
 var milliSeconds = date.getMilliseconds();
 replacement = milliSeconds;
 break;
 case Bee.DateUtils.patterns.PATTERN_DAY_OF_WEEK: //E
 var day = date.getDay();
 replacement = Bee.DateUtils.week['ch'][day];
 break;
 case Bee.DateUtils.patterns.PATTERN_DAY_OF_YEAR: //D
 replacement = Bee.DateUtils.dayOfTheYear(date);
 break;
 case Bee.DateUtils.patterns.PATTERN_DAY_OF_WEEK_IN_MONTH: //F
 var days = date.getDate();
 replacement = Math.floor(days / 7);
 break;
 case Bee.DateUtils.patterns.PATTERN_WEEK_OF_YEAR: //w
 var days = Bee.DateUtils.dayOfTheYear(date);
 replacement = Math.ceil(days / 7);
 break;
 case Bee.DateUtils.patterns.PATTERN_WEEK_OF_MONTH: //W
 var days = date.getDate();
 replacement = Math.ceil(days / 7);
 break;
 case Bee.DateUtils.patterns.PATTERN_AM_PM: //a
 var hours24 = date.getHours();
 replacement = hours24 12 "\u4e0a\u5348" : "\u4e0b\u5348";
 break;
 case Bee.DateUtils.patterns.PATTERN_HOUR1: //h(1~12)
 var hours12 = date.getHours() % 12 || 12; //0转为12
 replacement = (hours12 10 matchStr.length = 2) "0" + hours12 : hours12;
 break;
 case Bee.DateUtils.patterns.PATTERN_HOUR0: //K(0~11)
 var hours12 = date.getHours() % 12;
 replacement = hours12;
 break;
 case Bee.DateUtils.patterns.PATTERN_ZONE_NAME: //z
 replacement = Bee.DateUtils.getZoneNameValue(date)['name'];
 break;
 case Bee.DateUtils.patterns.PATTERN_ZONE_VALUE: //Z
 replacement = Bee.DateUtils.getZoneNameValue(date)['value'];
 break;
 case Bee.DateUtils.patterns.PATTERN_ISO_DAY_OF_WEEK: //u
 break;
 case Bee.DateUtils.patterns.PATTERN_ISO_ZONE: //X
 break;
 default:
 break;
 return replacement;
 * 计算一个日期是当年的第几天
 * @param {Object} date
 dayOfTheYear: function(date) {
 var obj = new Date(date);
 var year = obj.getFullYear();
 var month = obj.getMonth(); //从0开始
 var days = obj.getDate();
 var daysArr = [31, (this.isLeapYear(year) 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
 for(var i = 0; i month; i++) {
 days += daysArr[i];
 return days;
 //获得时区名和值
 getZoneNameValue: function(dateObj) {
 var date = new Date(dateObj);
 date = new Date(Date.UTC(date.getFullYear(), date.getMonth(), date.getDate()));
 var arr = date.toString().match(/([A-Z]+)([-+]\d+: \d+)/);
 var obj = {
 'name': arr[1],
 'value': arr[2]
 return obj;
//用法示例
console.log(DateUtils.getCurrentTime())//获取当前时间
console.pareTime('',''))//比较时间
console.log(DateUtils.isLeapYear('2018'))//是否闰年
console.log(DateUtils.getDaysOfMonth('2018','9'))//获取指定月份的天数(从0计数)
console.log(DateUtils.dayOfTheYear(''))//计算指定日期是当年第几天

使用在线HTML/CSS/JavaScript代码运行工具:测试运行结果如下:

凡科抠图:这里再为大家推荐几款比较实用的天数计算在线工具供大家使用:

在线日期/天数计算器:

在线日期计算器/相差天数计算器:

在线日期天数差计算器:

在线天数计算器:

更多关于JavaScript相关内容感兴趣的读者可查看本站专题:《》、《》、《》、《》及《》

希望本文所述对大家JavaScript程序设计有所帮助。