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js仿php date时间戳格式化函数

作者:xiaosong  日期:09-18
js仿php date时间戳格式化函数:
//仿php时间戳格式化 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 }, 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) }, // Timezone 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)) }, // Full Date/Time c: function () { return f.Y() + "-" + f.m() + "-" + f.d() + "T" + f.h() + ":" + f.i() + ":" + f.s() + f.P() }, U: function () { return Math.round(jsdate.getTime() / 1000) } }; return format.replace(/[\\]?([a-zA-Z])/g, function (t, s) { var ret = ''; if (t != s) { ret = s; } else if (f[s]) { ret = f[s](); } else { ret = s; } return ret; }); }
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