Js date processing class

Sort the date Processing Methods written by yourself and collected on the Internet into DateUtil. js/*** date processing tool class */var DateUtil = function () {/*** determine a leap year * @ param date Date date object * @ return boolean true or false */this. isLeapYear = function (date) {return (0 = date. getYear () % 4 & (date. get year () % 100! = 0) | (date. getYear () % 400 = 0);}/*** convert a date object to a string in the specified format * @ param f date format, the format is defined as yyyy-MM-dd HH: mm: ss * @ param date Date date object. If the default format is, the current time is ** YYYY/yyyy/YY/yy, indicating the year * MM/M month * W/w week * dd/DD/d/D date * hh/HH/h /H time * mm/m minutes * ss/SS/s/S seconds * @ return string specifies the format of the time string */this. dateToStr = function (formatStr, date) {formatStr = arguments [0] | "yyyy-MM-dd HH: mm: ss "; date = arguments [1] | new Date (); var str = FormatStr; var Week = ['day', 'yi', '2', '3', '4', '5', '6']; str = str. replace (/yyyy | YYYY/, date. getFullYear (); str = str. replace (/yy | YY/, (date. getYear () % 100)> 9? (Date. getYear () % 100 ). toString (): '0' + (date. getYear () % 100); str = str. replace (/MM/, date. getMonth ()> 9? (Date. getMonth () + 1): '0' + (date. getMonth () + 1); str = str. replace (/M/g, date. getMonth (); str = str. replace (/w | W/g, Week [date. getDay ()]); str = str. replace (/dd | DD/, date. getDate ()> 9? Date. getDate (). toString (): '0' + date. getDate (); str = str. replace (/d | D/g, date. getDate (); str = str. replace (/hh | HH/, date. getHours ()> 9? Date. getHours (). toString (): '0' + date. getHours (); str = str. replace (/h | H/g, date. getHours (); str = str. replace (/mm/, date. getMinutes ()> 9? Date. getMinutes (). toString (): '0' + date. getMinutes (); str = str. replace (/m/g, date. getMinutes (); str = str. replace (/ss | SS/, date. getSeconds ()> 9? Date. getSeconds (). toString (): '0' + date. getSeconds (); str = str. replace (/s | S/g, date. getSeconds (); return str ;} /*** date calculation ** @ param strInterval string optional values y, m, D, w, week, ww, week, h, n minutes, s, s * @ param num int * @ param Date date Date object * @ return Date returns the Date object */this. dateAdd = function (strInterval, num, date) {date = arguments [2] | new Date (); switch (strInterval) {case's ': return new Date (date. getTime () + (10 00 * num); case 'N': return new Date (date. getTime () + (60000 * num); case 'H': return new Date (date. getTime () + (3600000 * num); case 'D': return new Date (date. getTime () + (86400000 * num); case 'W': return new Date (date. getTime () + (86400000*7) * num); case 'M': return new Date (date. getFullYear (), (date. getMonth () + num, date. getDate (), date. getHours (), date. getMinutes (), date. getSeconds (); Case 'y': return new Date (date. getFullYear () + num), date. getMonth (), date. getDate (), date. getHours (), date. getMinutes (), date. getSeconds ());}} /*** compare date difference dtEnd format is a date type or valid date format string * @ param strInterval string optional value y year m month D day w week ww week h hour n minutes s seconds * @ param dtStart Date value options: y year m month D day w week ww week h hour n minute s second * @ param dtEnd Date value options: y year m month D day w week ww week h hour n in seconds */this. dateDiff = function (strInterval, dtStart, DtEnd) {switch (strInterval) {case's ': return parseInt (dtEnd-dtStart)/1000); case 'N': return parseInt (dtEnd-dtStart) /60000); case 'H': return parseInt (dtEnd-dtStart)/3600000); case 'D': return parseInt (dtEnd-dtStart)/86400000 ); case 'W': return parseInt (dtEnd-dtStart)/(86400000*7); case 'M': return (dtEnd. getMonth () + 1) + (dtEnd. getFullYear ()-dtStart. getFullYear () * 1 2)-(dtStart. getMonth () + 1); case 'y': return dtEnd. getFullYear ()-dtStart. getFullYear () ;}}/*** string to date object * @ param Date date Format: yyyy-MM-dd HH: mm: ss, which must be in the order of year, month, day, hour, minute, and second, the intermediate separator is not limited */this. strToDate = function (dateStr) {var data = dateStr; var reCat =/(\ d {1, 4})/gm; var t = data. match (reCat); t [1] = t [1]-1; eval ('var d = new Date ('+ t. join (',') + '); return d;}/*** converts a string in the specified format to a date object yyyy-MM-dd HH: mm: Ss **/this. strFormatToDate = function (formatStr, dateStr) {var year = 0; var start =-1; var len = dateStr. length; if (start = formatStr. indexOf ('yyyy')>-1 & start <len) {year = dateStr. substr (start, 4);} var month = 0; if (start = formatStr. indexOf ('mm')>-1 & start <len) {month = parseInt (dateStr. substr (start, 2)-1;} var day = 0; if (start = formatStr. indexOf ('dd')>-1 & star T <len) {day = parseInt (dateStr. substr (start, 2);} var hour = 0; if (start = formatStr. indexOf ('hh ')>-1 | (start = formatStr. indexOf ('hh ')> 1) & start <len) {hour = parseInt (dateStr. substr (start, 2);} var minute = 0; if (start = formatStr. indexOf ('mm')>-1 & start <len) {minute = dateStr. substr (start, 2);} var second = 0; if (start = formatStr. indexOf ('ss')>-1 & start <len) {Second = dateStr. substr (start, 2);} return new Date (year, month, day, hour, minute, second);}/*** convert a Date object to milliseconds */this. dateToLong = function (date) {return date. getTime ();}/*** convert to date object in milliseconds * @ param dateVal number the number of milliseconds of the date */this. longToDate = function (dateVal) {return new Date (dateVal);}/*** determines whether the string is in the Date format * @ param str string * @ param formatStr string Date format, yyyy-MM-dd */this. isDate = f Unction (str, formatStr) {if (formatStr = null) {formatStr = "yyyyMMdd";} var yIndex = formatStr. indexOf ("yyyy"); if (yIndex =-1) {return false;} var year = str. substring (yIndex, yIndex + 4); var mIndex = formatStr. indexOf ("MM"); if (mIndex =-1) {return false;} var month = str. substring (mIndex, mIndex + 2); var dIndex = formatStr. indexOf ("dd"); if (dIndex =-1) {return false;} var day = str. substring (dI Ndex, dIndex + 2); if (! IsNumber (year) | year> "2100" | year <"1900") {return false;} if (! IsNumber (month) | month> "12" | month <"01") {return false;} if (day> getMaxDay (year, month) | day <"01") {return false;} return true;} this. getMaxDay = function (year, month) {if (month = 4 | month = 6 | month = 9 | month = 11) return "30 "; if (month = 2) if (year % 4 = 0 & year % 100! = 0 | year % 400 = 0) return "29"; else return "28"; return "31";}/*** whether the variable is a number */this. isNumber = function (str) {var regExp =/^ \ d + $/g; return regExp. test (str);}/*** splits the date into an array [year, month, day, hour, minute, second] */this. toArray = function (myDate) {myDate = arguments [0] | new Date (); var myArray = Array (); myArray [0] = myDate. getFullYear (); myArray [1] = myDate. getMonth (); myArray [2] = myDate. getDate (); myArray [3] = MyDate. getHours (); myArray [4] = myDate. getMinutes (); myArray [5] = myDate. getSeconds (); return myArray ;} /*** get date data information * parameter interval indicates data type * y, M, D, w, week, ww, week, h, n minutes, s */this. datePart = function (interval, myDate) {myDate = arguments [1] | new Date (); var partStr = ''; var Week = ['day', '1 ', '2', '3', '4', '5', '6']; switch (interval) {case 'y': partStr = myDate. getFullYear (); break; case 'M': partStr = MyDate. getMonth () + 1; break; case 'D': partStr = myDate. getDate (); break; case 'W': partStr = Week [myDate. getDay ()]; break; case 'ww ': partStr = myDate. weekNumOfYear (); break; case 'H': partStr = myDate. getHours (); break; case 'M': partStr = myDate. getMinutes (); break; case's ': partStr = myDate. getSeconds (); break;} return partStr;}/*** get the maximum number of days of the month of the current date */this. maxDayOfDate = function (date) {date = Rguments [0] | new Date (); date. setDate (1); date. setMonth (date. getMonth () + 1); var time = date. getTime ()-24*60*60*1000; var newDate = new Date (time); return newDate. getDate () ;}return this ;}(); Test Result: <! 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