目的: V80404 – 計算兩日期差異天數
處理說明: 1>計算兩日期的差異天數
int Tmp_Days = new TimeSpan(date1.Ticks - date2.Ticks).Days;
1>*.cs
取得兩個日期之間的「天數」（不足一天者採「無條件刪去法」）
[code:c#]
new
TimeSpan(date1.Ticks - date2.Ticks).Days
[/code]
取得兩個日期之間的「天數」（回傳型別為 double 雙精確度）
[code:c#]
new
TimeSpan(date1.Ticks - date2.Ticks).TotalDays
[/code]
取得兩個日期之間的「小時數」（回傳型別為 double 雙精確度）
[code:c#]
new
TimeSpan(date1.Ticks - date2.Ticks).TotalHours
[/code]
取得兩個日期之間的「分鐘數」（回傳型別為 double 雙精確度）
[code:c#]
new
TimeSpan(date1.Ticks - date2.Ticks).TotalMinutes
[/code]
備註事項
在 TimeSpan 成員中，只要是 Total 開頭的屬性，都是回傳兩個時間差的「總天數」、「總時數」、「總分鐘數」、「總秒數」、「總豪秒數」，而且以 double 型別回傳，若無法整除都會有小數點出現。
另外 Days 屬性是回傳不足一天者採「無條件刪去法」的天數外 (整數型別)，其餘的像是 Hours, Minutes, Seconds, Milliseconds 等屬性都是以用來描述該差異天數中的餘數進行表示。舉個例子說明會比較清楚：
[code:c#]
DateTime date1 = new DateTime(2008, 12,31, 23,59,59,
DateTimeKind.Local);
DateTime date2 = new DateTime(2003, 2,13, 23,59,59, DateTimeKind.Local);
TimeSpan s = new TimeSpan(date1.Ticks - date2.Ticks);
[/code]
上述例子中，因為回傳的「差異天數」剛好為「整數」，並沒有時、分、秒、豪秒等餘數，所以 s.Hours, s.Minutes, s.Seconds, s.Milliseconds 等屬性回傳值都會是 0 喔！
- Ext.Date
The following is a list of all currently supported formats:
Format Description Example returned values
------ ----------------------------------------------------------------------- -----------------------
d Day of the month, 2 digits with leading zeros 01 to 31
D A short textual representation of the day of the week Mon to Sun
j Day of the month without leading zeros 1 to 31
l A full textual representation of the day of the week Sunday to Saturday
N ISO-8601 numeric representation of the day of the week 1 (for Monday) through 7 (for Sunday)
S English ordinal suffix for the day of the month, 2 characters st, nd, rd or th. Works well with j
w Numeric representation of the day of the week 0 (for Sunday) to 6 (for Saturday)
z The day of the year (starting from 0) 0 to 364 (365 in leap years)
W ISO-8601 week number of year, weeks starting on Monday 01 to 53
F A full textual representation of a month, such as January or March January to December
m Numeric representation of a month, with leading zeros 01 to 12
M A short textual representation of a month Jan to Dec
n Numeric representation of a month, without leading zeros 1 to 12
t Number of days in the given month 28 to 31
L Whether it's a leap year 1 if it is a leap year, 0 otherwise.
o ISO-8601 year number (identical to (Y), but if the ISO week number (W) Examples: 1998 or 2004
belongs to the previous or next year, that year is used instead)
Y A full numeric representation of a year, 4 digits Examples: 1999 or 2003
y A two digit representation of a year Examples: 99 or 03
a Lowercase Ante meridiem and Post meridiem am or pm
A Uppercase Ante meridiem and Post meridiem AM or PM
g 12-hour format of an hour without leading zeros 1 to 12
G 24-hour format of an hour without leading zeros 0 to 23
h 12-hour format of an hour with leading zeros 01 to 12
H 24-hour format of an hour with leading zeros 00 to 23
i Minutes, with leading zeros 00 to 59
s Seconds, with leading zeros 00 to 59
u Decimal fraction of a second Examples:
(minimum 1 digit, arbitrary number of digits allowed) 001 (i.e. 0.001s) or
100 (i.e. 0.100s) or
999 (i.e. 0.999s) or
999876543210 (i.e. 0.999876543210s)
O Difference to Greenwich time (GMT) in hours and minutes Example: +1030
P Difference to Greenwich time (GMT) with colon between hours and minutes Example: -08:00
T Timezone abbreviation of the machine running the code Examples: EST, MDT, PDT ...
Z Timezone offset in seconds (negative if west of UTC, positive if east) -43200 to 50400
c ISO 8601 date
Notes: Examples:
1) If unspecified, the month / day defaults to the current month / day, 1991 or
the time defaults to midnight, while the timezone defaults to the 1992-10 or
browser's timezone. If a time is specified, it must include both hours 1993-09-20 or
and minutes. The "T" delimiter, seconds, milliseconds and timezone 1994-08-19T16:20+01:00 or
are optional. 1995-07-18T17:21:28-02:00 or
2) The decimal fraction of a second, if specified, must contain at 1996-06-17T18:22:29.98765+03:00 or
least 1 digit (there is no limit to the maximum number 1997-05-16T19:23:30,12345-0400 or
of digits allowed), and may be delimited by either a '.' or a ',' 1998-04-15T20:24:31.2468Z or
Refer to the examples on the right for the various levels of 1999-03-14T20:24:32Z or
date-time granularity which are supported, or see 2000-02-13T21:25:33
http://www.w3.org/TR/NOTE-datetime for more info. 2001-01-12 22:26:34
U Seconds since the Unix Epoch (January 1 1970 00:00:00 GMT) 1193432466 or -2138434463
MS Microsoft AJAX serialized dates \/Date(1238606590509)\/ (i.e. UTC milliseconds since epoch) or
\/Date(1238606590509+0800)\/
time A javascript millisecond timestamp 1350024476440
timestamp A UNIX timestamp (same as U) 1350024866
Example usage (note that you must escape format specifiers with '\' to render them as character literals):
// Sample date:
// 'Wed Jan 10 2007 15:05:01 GMT-0600 (Central Standard Time)'
var dt = new Date('1/10/2007 03:05:01 PM GMT-0600');
console.log(Ext.Date.format(dt, 'Y-m-d')); // 2007-01-10
console.log(Ext.Date.format(dt, 'F j, Y, g:i a')); // January 10, 2007, 3:05 pm
console.log(Ext.Date.format(dt, 'l, \\t\\he jS \\of F Y h:i:s A')); // Wednesday, the 10th of January 2007 03:05:01 PM
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