/** * 时间处理工具 * * @type * @author miaofc */ var DateUtils = { /** * 日期对象转换为毫秒数 */ date2Long : function(date){ return date.getTime(); }, /** * 毫秒转换为日期对象 * @param dateVal number 日期的毫秒数 */ long2Date:function(dateVal){ return new Date(dateVal); }, /** * 将制定格式的时间字符串转换成long *
  • 0-yyyyMMdd
    • *
  • 1-yyyy-MM-dd
    • *
  • 2-HHmmss
    • *
  • 3-HH:mm:ss
    • *
  • 4-HHmmssSSS
    • *
  • 5-HH:mm:ss.SSS
    • *
  • 6-yyyyMMddHHmmss
    • *
  • 7-yyyy-MM-dd HH:mm:ss
    • *
  • 8-yyyyMMddHHmmssSSS
    • *
  • 9-yyyy-MM-dd HH:mm:ss.SSS
    • *
  • 10-yyyy/MM/dd HH:mm
    • *
  • 11-yyyy/MM/dd HH:mm:ss
    • * */ string2Long:function(str,format){ if(str==null||str==""){ return ""; } return this.date2Long(this.string2Date(str,format)); }, /** * 毫秒转换为日期对象 * * @param dateVal * */ long2String:function(dateVal,formatType){ if(dateVal == undefined || dateVal == null ){ return '-' } return this.date2String(new Date(dateVal),formatType); }, /** * 将时间转化为相应字符串 * * @param {} * date 待格式化的Date对象 * @param {} * formatType 指定格式: * * @return string 格式化后的字符串 */ date2String : function(date, formatType) { if(undefined == date || null == date){ return '-'; } // 格式化字符串数组 var patterns = ["yyyyMMdd", "yyyy-MM-dd", "HHmmss", "HH:mm:ss", "HHmmssSSS", "HH:mm:ss.SSS", "yyyyMMddHHmmss", "yyyy-MM-dd HH:mm:ss", "yyyyMMddHHmmssSSS", "yyyy-MM-dd HH:mm:ss.SSS","yyyy/MM/dd HH:mm","yyyy/MM/dd HH:mm:ss","yyyy/MM/dd","yyyy-MM","HH:mm"]; return this.formatDate(date, patterns[formatType]); }, /** * 将字符串转化为相应时间 * * @param {} * dateStr 时间字符串 * @param {} * formatType 指定格式: * * @return 解析后的Date对象 */ string2Date : function(dateStr, formatType) { var date = new Date(0); var year = 1970; var month = 1; var day = 1; var hour = 0; var minute = 0; var second = 0; var millisecond = 0; switch (formatType) { case 0 : year = parseInt(dateStr.substr(0, 4),10); month = parseInt(dateStr.substr(4, 2),10); day = parseInt(dateStr.substr(6, 2),10); break; case 1 : year = parseInt(dateStr.substr(0, 4),10); month = parseInt(dateStr.substr(5, 2),10); day = parseInt(dateStr.substr(8, 2),10); break; case 2 : hour = parseInt(dateStr.substr(0, 2),10); minute = parseInt(dateStr.substr(2, 2),10); second = parseInt(dateStr.substr(4, 2),10); break; case 3 : hour = parseInt(dateStr.substr(0, 2),10); minute = parseInt(dateStr.substr(3, 2),10); second = parseInt(dateStr.substr(6, 2),10); break; case 4 : hour = parseInt(dateStr.substr(0, 2),10); minute = parseInt(dateStr.substr(2, 2),10); second = parseInt(dateStr.substr(4, 2),10); millisecond = parseInt(dateStr.substr(6, 3),10); break; case 5 : hour = parseInt(dateStr.substr(0, 2),10); minute = parseInt(dateStr.substr(3, 2),10); second = parseInt(dateStr.substr(6, 2),10); millisecond = parseInt(dateStr.substr(9, 3),10); break; case 6 : year = parseInt(dateStr.substr(0, 4),10); month = parseInt(dateStr.substr(4, 2),10); day = parseInt(dateStr.substr(6, 2),10); hour = parseInt(dateStr.substr(8, 2),10); minute = parseInt(dateStr.substr(10, 2),10); second = parseInt(dateStr.substr(12, 2),10); break; case 7 : year = parseInt(dateStr.substr(0, 4),10); month = parseInt(dateStr.substr(5, 2),10); day = parseInt(dateStr.substr(8, 2),10); hour = parseInt(dateStr.substr(11, 2),10); minute = parseInt(dateStr.substr(14, 2),10); second = parseInt(dateStr.substr(17, 2),10); break; case 8 : year = parseInt(dateStr.substr(0, 4),10); month = parseInt(dateStr.substr(4, 2),10); day = parseInt(dateStr.substr(6, 2),10); hour = parseInt(dateStr.substr(8, 2),10); minute = parseInt(dateStr.substr(10, 2),10); second = parseInt(dateStr.substr(12, 2),10); millisecond = parseInt(dateStr.substr(14, 3),10); break; case 9 : year = parseInt(dateStr.substr(0, 4),10); month = parseInt(dateStr.substr(5, 2),10); day = parseInt(dateStr.substr(8, 2),10); hour = parseInt(dateStr.substr(11, 2),10); minute = parseInt(dateStr.substr(14, 2),10); second = parseInt(dateStr.substr(17, 2),10); millisecond = parseInt(dateStr.substr(19, 3),10); break; case 10 ://yyyy/MM/dd HH:mm year = parseInt(dateStr.substr(0, 4),10); month = parseInt(dateStr.substr(5, 2),10); day = parseInt(dateStr.substr(8, 2),10); hour = parseInt(dateStr.substr(11, 2),10); minute = parseInt(dateStr.substr(14, 2),10); break; case 11 ://yyyy/MM/dd HH:mm:ss year = parseInt(dateStr.substr(0, 4),10); month = parseInt(dateStr.substr(5, 2),10); day = parseInt(dateStr.substr(8, 2),10); hour = parseInt(dateStr.substr(11, 2),10); minute = parseInt(dateStr.substr(14, 2),10); second = parseInt(dateStr.substr(17, 2),10); break; } date.setFullYear(year); date.setMonth(month - 1); date.setDate(day); date.setHours(hour); date.setMinutes(minute); date.setSeconds(second); date.setMilliseconds(millisecond); return date; }, /** * 格式化时间 * * @param {} * date 待格式化的Date对象 * @param {} * pattern 格式化模式，可能包含下列字母 * * @return 格式化后的字符串 */ formatDate : function(date, pattern) { var dateStr = new String(pattern); // 格式化公元信息 dateStr = dateStr.replace("G",date.getFullYear()>=0?"AD":"BC"); // 格式化年份信息 var year = new String(date.getFullYear()); dateStr = dateStr.replace("yyyy", year); dateStr = dateStr.replace("yy", year.substring(year.length-2,year.length)); // 格式化月份信息 var month = date.getMonth(); var monthFullNames = ["January","February","March","April","May","June","July","August","September","October","November","December"]; var monthShortNames = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]; dateStr = dateStr.replace("MMMM",monthFullNames[month]); dateStr = dateStr.replace("MMM",monthShortNames[month]); dateStr = dateStr.replace("MM",month<9?"0"+(month+1):month+1); // 格式化月份中的日期 var day = date.getDate(); dateStr = dateStr.replace("dd",day<10?"0"+day:day); // 格式化上下午 dateStr = dateStr.replace("a",date.getHours()<12?"AM":"PM"); // 格式化小时 var hour = date.getHours(); dateStr = dateStr.replace("HH",hour<10?"0"+hour:hour); var khour = hour>11?hour-12:hour; dateStr = dateStr.replace("KK",khour<10?"0"+khour:khour); // 格式化分钟 var minute = date.getMinutes(); dateStr = dateStr.replace("mm",minute<10?"0"+minute:minute); // 格式化秒钟 var second = date.getSeconds(); dateStr = dateStr.replace("ss",second<10?"0"+second:second); // 格式化毫秒 var millisecond = date.getMilliseconds(); dateStr = dateStr.replace("SSS",millisecond<10?"00"+millisecond:(millisecond<100?"0"+millisecond:millisecond)); return dateStr; }, /** * 取得date在域field上偏移amount后的值 * * @param {} * date 原始时间 * @param {} * field 偏移域，可能的取值: * * @param {} * amount 偏移量 * @return 偏移后的时间 */ dateOffset : function(date, field, amount) { var mount = 0; switch(field){ // 以年为单位位移 case "year","y": mount = 31536000 *1000; // newDate.setFullYear(date.getFullYear()+amount); break; // 以月份为单位位移 case "month","M": mount = 30 * 24 * 60 * 60 *1000; // newDate.setMonth(date.getMonth()+amount); break; // 以天为单位位移 case "day","d": mount = 24 * 60 * 60 *1000; // newDate.setDate(date.getDate()+amount); break; // 以小时为单位位移 case "hour","h": mount = 60 * 60 *1000; // newDate.setHours(date.getHours()+amount); break; // 以分钟为单位位移 case "minute","m": mount = 60 *1000; // newDate.setMinutes(date.getMinutes()+amount); break; // 以秒为单位位移 case "second","s": mount = 1000; // newDate.setSeconds(date.getSeconds+amount); break; // 以毫秒为单位位移 case "millisecond","ms","S": mount = 1; // newDate.setMilliseconds(date.getMilliseconds+amount); break; } var newDate = new Date(date.getTime() + Number(mount) * Number(amount)); return newDate; }, /** * 求两个日期间相差的毫秒数 * * @param {} * date1 时间1 * @param {} * date2 时间2 * @return 两个时间相差的毫秒数 */ getDiffMillis : function(date1, date2) { return date1.getTime() - date2.getTime(); }, /** * 求两个日期间相差的秒数 * * @param {} * date1 时间1 * @param {} * date2 时间2 * @return 两个时间相差的秒数 */ getDiffSeconds : function(date1, date2) { return Math.floor(this.getDiffMillis(date1, date2) / 1000); }, /** * 求两个日期间相差的分钟数目 * * @param {} * date1 时间1 * @param {} * date2 时间2 * @return 两个时间相差的分钟数 */ getDiffMinutes : function(date1, date2) { return Math.floor(this.getDiffSeconds(date1, date2) / 60); }, /** * 求两个日期间相差的小时数目 * * @param {} * date1 时间1 * @param {} * date2 时间2 * @return 两个时间相差的小时数 */ getDiffHours : function(date1, date2) { return Math.floor(this.getDiffMinutes(date1, date2) / 60); }, /** * 求两个日期间相差的天数 * * @param {} * date1 时间1 * @param {} * date2 时间2 * @return 两个时间相差的天数 */ getDiffDays : function(date1, date2) { return Math.floor(this.getDiffHours(date1, date2) / 24); }, /** * 求两个日期间相差的月数目。认为每个月均为30天。 * * @param {} * date1 时间1 * @param {} * date2 时间2 * @return 两个时间相差的月树 */ getDiffMonths : function(date1, date2) { return Math.floor(this.getDiffDays(date1, date2) / 30); }, /** * 求两个日期间相差的自然月数目 * * @param {} * date1 时间1 * @param {} * date2 时间2 * @return 两个时间相差的自然月数 */ getDiffNaturalMonth : function(date1, date2) { var month1 = date1.getMonth(); var month2 = date2.getMonth(); return this.getDiffYears(date1, date2) * 12 - (month2 - month1); }, /** * 求两个日期间相差的年数目 * * @param {} * date1 时间1 * @param {} * date2 时间2 * @return 两个时间相差的年数 */ getDiffYears : function(date1, date2) { return date1.getFullYear() - date2.getFullYear(); }, /** * 求日期为其所在月份的第几天 * * @param {} * day 目标日 * @return 目标日是第几天。天数从1开始 */ getOrinalOfDayInYear : function(day) { // 得到一年中的第一天 var firstDay = new Date(day.getFullYear, 0, 1); // 计算与第一天的差值 return this.getDiffDays(day, firstDay) + 1; }, /** * 求日期为其所在月份的第几天 * * @param {} * day 目标日 * @return 目标日是第几天。天数从1开始 */ getOrinalOfDayInMonth : function(day) { // 得到一个月中的第一天 var firstDay = new Date(day.getFullYear, day.getMonth(), 1); // 计算与第一天的差值 return this.getDiffDays(day, firstDay) + 1; }, /** * 求日期为其所在周的第几天 * * @param {} * day 目标日 * @return 目标日是第几天。天数从1开始 */ getOrinalOfDayInWeek : function(day) { return day.getDay() + 1; }, /** * 求某年共有多少天 * * @param {} * year 年份 * @return 该年份共有多少天 */ getNumberOfDaysInYear : function(year) { // 若该年份为闰年，返回366 if ((year % 100 != 0 && year % 4 == 0) || (year % 400 == 0)) { return 366; } // 普通年份返回365 return 365; }, /** * 求某月共有多少天 * * @param {} * year 年份 * @param {} * month 月份 * @return 该月内共有多少天 */ getNumberOfDaysInMonth : function(year, month) { // 得到该月份的第一天 var date1 = new Date(year, month - 1, 1); // 得到后一个月份的第一天 var date2 = ""; if (month != 11) { date2 = new Date(year, month, 1); } else { date2 = new Date(year - 1, 0, 1); } return this.getDiffDays(date1, date2); }, /** * 得到当前年份一共有多少天 * * @return 当前年份共有多少天 */ getNumberOfDaysInCurrentYear : function() { var date = new Date(); return this.getNumberOfDaysInYear(date.getYear()); }, /** * 得到当前月份一共有多少天 * * @return 当前月份共有多少天 */ getNumberOfDaysInCurrentMonth : function() { var date = new Date(); return this.getNumberOfDaysInMonth(date.getYear(), date.getMonth() + 1); } }