JS版日付関数(PHPの日付関数と同じ)_JavaScript

コードをコピー コードは次のとおりです:

// 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(){
t = f.l(); return t.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(){
                t = f.F(); return t.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

// タイムゾーン
// まだサポートされていません
// まだサポートされていません
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 まだサポートされていません
//Z はまだサポートされていません

// 完全な日付/時刻
c: function(){
return f.Y() "-" f.m() "-" f.d() "T" f.h() ":" f.i() " ： "f.s（）f.p（）;
}、
// rまだサポートされていません
u：function（）{
return math.round（jsdate.gettime（）/1000）;
}
};

return format.replace(/[\]?([a-zA-Z])/g, function(t, s){
if( t!=s ){
// エスケープ
ret = s;
} else if( f[s] ){
// 日付関数が存在します
ret = f[s]();
} else{
/ / 特になし
ret = s;
}

return ret;
});
}