JavaScript日期工具类DateUtils定义与用法示例
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2022-06-04 22:54:40
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:...
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.log(dateutils.comparetime('2018-8-1','2018-9-3'))//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('2018-9-3'))//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:http://tools.jb51.net/code/htmljsrun测试运行结果如下:
ps: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:《javascript时间与日期操作技巧总结》、《javascript+html5特效与技巧汇总》、《javascript错误与调试技巧总结》、《javascript数据结构与算法技巧总结》及《javascript数学运算用法总结》
希望本文所述对大家javascript程序设计有所帮助。
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