Last active
July 15, 2017 02:29
-
-
Save godcheese/634f61b7db9b81f373c08be96a9343af to your computer and use it in GitHub Desktop.
JavaScript 时间戳格式化函数
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/** | |
* 和PHP一样的时间戳格式化函数 | |
* @param {string} format 格式 | |
* @param {int} timestamp 要格式化的时间 默认为当前时间 | |
* @return {string} 格式化的时间字符串 | |
*/ | |
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", 21: "st", 22: "nd", 23: "rd", 31: "st"}; | |
var txt_months = ["", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "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 28 + 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() * 60) + 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 = "00" + 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) | |
} | |
}; | |
var exp = /[\\]?([a-zA-Z])/g; | |
return format.replace(exp, 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; | |
}); | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment