/**<br>
* 和PHP一样的时间戳格式化函数<br>
* @param {string} format 格式<br>
* @param {int} timestamp 要格式化的时间 默认为当前时间<br>
* @return {string} 格式化的时间字符串<br>
*/<br>
function date(format, timestamp){ <br>
var a, jsdate=((timestamp) ? new Date(timestamp*1000) : new Date());<br>
var pad = function(n, c){<br>
if((n = n + "").length
return new Array(++c - n.length).join("0") + n;<br>
} else {<br>
return n;<br>
}<br>
};<br>
var txt_weekdays = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];<br>
var txt_ordin = {1:"st", 2:"nd", 3:"rd", 21:"st", 22:"nd", 23:"rd", 31:"st"};<br>
var txt_months = ["", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]; <br>
var f = {<br>
// Day<br>
d: function(){return pad(f.j(), 2)},<br>
D: function(){return f.l().substr(0,3)},<br>
j: function(){return jsdate.getDate()},<br>
l: function(){return txt_weekdays[f.w()]},<br>
N: function(){return f.w() + 1},<br>
S: function(){return txt_ordin[f.j()] ? txt_ordin[f.j()] : 'th'},<br>
w: function(){return jsdate.getDay()},<br>
z: function(){return (jsdate - new Date(jsdate.getFullYear() + "/1/1")) / 864e5 >> 0},<br>
<br>
// Week<br>
W: function(){<br>
var a = f.z(), b = 364 + f.L() - a;<br>
var nd2, nd = (new Date(jsdate.getFullYear() + "/1/1").getDay() || 7) - 1;<br>
if(b
return 1;<br>
} else{<br>
if(a = 4 && a >= (6 - nd)){<br>
nd2 = new Date(jsdate.getFullYear() - 1 + "/12/31");<br>
return date("W", Math.round(nd2.getTime()/1000));<br>
} else{<br>
return (1 + (nd > 0);<br>
}<br>
}<br>
},<br>
<br>
// Month<br>
F: function(){return txt_months[f.n()]},<br>
m: function(){return pad(f.n(), 2)},<br>
M: function(){return f.F().substr(0,3)},<br>
n: function(){return jsdate.getMonth() + 1},<br>
t: function(){<br>
var n;<br>
if( (n = jsdate.getMonth() + 1) == 2 ){<br>
return 28 + f.L();<br>
} else{<br>
if( n & 1 && n 7 ){<br>
return 31;<br>
} else{<br>
return 30;<br>
}<br>
}<br>
},<br>
<br>
// Year<br>
L: function(){var y = f.Y();return (!(y & 3) && (y % 1e2 || !(y % 4e2))) ? 1 : 0},<br>
//o not supported yet<br>
Y: function(){return jsdate.getFullYear()},<br>
y: function(){return (jsdate.getFullYear() + "").slice(2)},<br>
<br>
// Time<br>
a: function(){return jsdate.getHours() > 11 ? "pm" : "am"},<br>
A: function(){return f.a().toUpperCase()},<br>
B: function(){<br>
// peter paul koch:<br>
var off = (jsdate.getTimezoneOffset() + 60)*60;<br>
var theSeconds = (jsdate.getHours() * 3600) + (jsdate.getMinutes() * 60) + jsdate.getSeconds() + off;<br>
var beat = Math.floor(theSeconds/86.4);<br>
if (beat > 1000) beat -= 1000;<br>
if (beat
if ((String(beat)).length == 1) beat = "00"+beat;<br>
if ((String(beat)).length == 2) beat = "0"+beat;<br>
return beat;<br>
},<br>
g: function(){return jsdate.getHours() % 12 || 12},<br>
G: function(){return jsdate.getHours()},<br>
h: function(){return pad(f.g(), 2)},<br>
H: function(){return pad(jsdate.getHours(), 2)},<br>
i: function(){return pad(jsdate.getMinutes(), 2)},<br>
s: function(){return pad(jsdate.getSeconds(), 2)},<br>
//u not supported yet<br>
<br>
// Timezone<br>
//e not supported yet<br>
//I not supported yet<br>
O: function(){<br>
var t = pad(Math.abs(jsdate.getTimezoneOffset()/60*100), 4);<br>
if (jsdate.getTimezoneOffset() > 0) t = "-" + t; else t = "+" + t;<br>
return t;<br>
},<br>
P: function(){var O = f.O();return (O.substr(0, 3) + ":" + O.substr(3, 2))},<br>
//T not supported yet<br>
//Z not supported yet<br>
<br>
// Full Date/Time<br>
c: function(){return f.Y() + "-" + f.m() + "-" + f.d() + "T" + f.h() + ":" + f.i() + ":" + f.s() + f.P()},<br>
//r not supported yet<br>
U: function(){return Math.round(jsdate.getTime()/1000)}<br>
};<br>
<br>
return format.replace(/[\\]?([a-zA-Z])/g, function(t, s){<br>
if( t!=s ){<br>
// escaped<br>
ret = s;<br>
} else if( f[s] ){<br>
// a date function exists<br>
ret = f[s]();<br>
} else{<br>
// nothing special<br>
ret = s;<br>
}<br>
return ret;<br>
});<br>
} AD：真正免费，域名+虚机+企业邮箱=0元
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
