JavaScript Date time and timestamp conversion function sharing _javascript tips

If you simply convert the current time to a timestamp, you can use the new date (). GetTime ()/1000, but if you turn a specific time or date into a Unix timestamp, IE does not support a method with parameters like new date ("2013-1-1") and returns Nan.

For this, I wrote the following functions, support ie6+, Google, Firefox and other browsers:

Copy Code code as follows:

function GetTime (day) {
Re =/(\d{4}) (?:-( \d{1,2}) (?:-( \d{1,2})? (?:\ S+ (\d{1,2}):(\d{1,2}):(\d{1,2}))?/.exec (day);
return new Date (Re[1], (re[2]| | 1) -1,re[3]| | 1,re[4]| | 0,re[5]| | 0,re[6]| | 0). GetTime ()/1000;
}

Test
Alert (GetTime ("2013-02-03 10:10:10"));
Alert (GetTime ("2013-02-03"));
Alert (GetTime ("2013-02"));
Alert (GetTime ("2013"));

The following function, which converts a timestamp into a date format, supports a custom date format that is similar to the PHP date function, and also supports browsers such as ie6+, Google, and Firefox. This function is realized by netizens, I have time to write a ^_^

Copy Code code as follows:

function date (format, timestamp) {
var A, jsdate= (timestamp), new Date (timestamp*1000): new Date ());
var pad = function (n, c) {
if ((n = n + ""). Length < C) {
return new Array (++c-n.length). Join ("0") + N;
} else {
return n;
}
};
var txt_weekdays = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
var Txt_ordin = {1: "St", 2: "nd", 3: "Rd", "St.", "nd", "rd", "St"};
var txt_months = ["", "January", "February", "March", "April", "may", "June", "July", "August", "September", "October", "N Ovember "," December "];
var f = {
Day
D:function () {return pad (F.J (), 2)},
D:function () {return F.L (). substr (0,3)},
J:function () {return jsdate.getdate ()},
L:function () {return TXT_WEEKDAYS[F.W ()]},
N:function () {return F.W () + 1},
S:function () {return TXT_ORDIN[F.J ()]? TXT_ORDIN[F.J ()]: ' th '},
W:function () {return jsdate.getday ()},
Z:function () {return (Jsdate-new Date (jsdate.getfullyear () + "/1/1"))/864e5 >> 0},

Week
W:function () {
var a = F.z (), B = 364 + F.L ()-A;
var nd2, nd = (new Date (Jsdate.getfullyear () + "/1/1"). Getday () | | 7)-1;
if (b <= 2 && (jsdate.getday () | | | 7)-1) <= 2-b) {
return 1;
} else{
if (a <= 2 && nd >= 4 && a >= (6-nd)) {
Nd2 = new Date (Jsdate.getfullyear ()-1 + "/12/31");
Return date ("W", Math.Round (Nd2.gettime ()/1000));
} else{
Return (1 + (nd <= 3?) ((A + nd)/7: (A-(7-ND))/7) >> 0);
}
}
},

Month
F:function () {return TXT_MONTHS[F.N ()]},
M:function () {return pad (F.N (), 2)},
M:function () {return f.f (). substr (0,3)},
N:function () {return jsdate.getmonth () + 1},
T:function () {
var n;
if ((n = jsdate.getmonth () + 1) = = 2) {
return + F.L ();
} else{
if (n & 1 && N < 8 | |! N & 1) && n > 7) {
return 31;
} else{
return 30;
}
}
},

Year
L:function () {var y = f.y (); return (!) ( Y & 3) && (y% 1e2 | |!) ( Y% 4e2))? 1:0},
O Not supported yet
Y:function () {return jsdate.getfullyear ()},
Y:function () {return (Jsdate.getfullyear () + ""). Slice (2)},

Time
A:function () {return jsdate.gethours () > 11? "PM": "AM"},
A:function () {return F.A (). toUpperCase ()},
B:function () {
Peter Paul Koch:
var off = (Jsdate.gettimezoneoffset () + 60) *60;
var theseconds = (jsdate.gethours () * 3600) + (Jsdate.getminutes () *) + jsdate.getseconds () + off;
var beat = Math.floor (theseconds/86.4);
if (Beat > 1000) beat-= 1000;
if (Beat < 0) beat + + 1000;
if ((String (Beat)). length = = 1) beat = "a" +beat;
if ((String (Beat)). length = = 2) beat = "0" +beat;
return beat;
},
G:function () {return jsdate.gethours ()% 12 | | | 12},
G:function () {return jsdate.gethours ()},
H:function () {return pad (F.G (), 2)},
H:function () {return pad (jsdate.gethours (), 2)},
I:function () {return pad (jsdate.getminutes (), 2)},
S:function () {return pad (jsdate.getseconds (), 2)},
U not supported yet

Timezone
E Not supported yet
I not supported yet
O:function () {
var t = pad (Math.Abs (Jsdate.gettimezoneoffset ()/60*100), 4);
if (Jsdate.gettimezoneoffset () > 0) t = "-" + t; else T = "+" + t;
return t;
},
P:function () {var O = F.O (); return (O.SUBSTR (0, 3) + ":" + o.substr (3, 2))},
T not supported yet
Z not supported yet

Full Date/time
C:function () {return f.y () + "-" + f.m () + "-" + f.d () + "T" + f.h () + ":" + f.i () + ":" + f.s () + F.P ()},
R not supported yet
U:function () {return Math.Round (Jsdate.gettime ()/1000)}
};

Return Format.replace (/[\\]? ( [A-za-z]) /g, function (t, s) {
if (t!=s) {
Escaped
ret = s;
else if (F[s]) {
A date function exists
ret = F[s] ();
} else{
Nothing special
ret = s;
}
return ret;
});
}

Test
Alert (Date (' Y-m-d h:i:s ', (new date). GetTime ()/1000));
Alert (Date (' y-m-d ', (new date). GetTime ()/1000));
Alert (Date (' y-m-d h:i:s ', ' 1355252653 '));