202 wiersze
5.6 KiB
JavaScript
202 wiersze
5.6 KiB
JavaScript
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Date.prototype.monthNames = new Array(
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"January", "February", "March", "April",
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"May", "June", "July", "August",
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"September", "October", "November", "December"
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);
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Date.prototype.dayNames = new Array(
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"Sunday", "Monday", "Tuesday", "Wednesday",
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"Thursday", "Friday", "Saturday"
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);
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Date.prototype.format = function (formatStr) {
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var heap = formatStr.split("");
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var resHeap = new Array(heap.length);
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var escapeChar = "\\"; // you can change this to something different, but
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// don't use a character that has a formatting meaning,
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// unless you want to disable it's functionality
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// go through array and extract identifiers from its fields
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for (var i = 0; i < heap.length; i++) {
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switch(heap[i]) {
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case escapeChar:
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resHeap[i] = heap[i+1];
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i++;
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break;
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case "a": // "am" or "pm"
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var temp = this.getHours();
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resHeap[i] = (temp < 12) ? "am" : "pm";
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break;
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case "A": // "AM" or "PM"
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var temp = this.getHours();
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resHeap[i] = (temp < 12) ? "AM" : "PM";
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break;
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case "d": // day of the month, 2 digits with leading zeros; i.e. "01" to "31"
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var temp = String(this.getDate());
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resHeap[i] = (temp.length > 1) ? temp : "0" + temp;
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break;
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case "D": // day of the week, textual, 3 letters; i.e. "Fri"
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var temp = this.dayNames[this.getDay()];
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resHeap[i] = temp.substring(0, 3);
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break;
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case "F": // month, textual, long; i.e. "January"
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resHeap[i] = this.monthNames[this.getMonth()];
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break;
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case "g": // hour, 12-hour format without leading zeros; i.e. "1" to "12"
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var temp = this.getHours();
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resHeap[i] = (temp <= 12) ? temp : (temp - 12);
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break;
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case "G": // hour, 24-hour format without leading zeros; i.e. "0" to "23"
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resHeap[i] = String(this.getHours());
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break;
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case "h": // hour, 12-hour format; i.e. "01" to "12"
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var temp = String(this.getHours());
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temp = (temp <= 12) ? temp : (temp - 12);
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resHeap[i] = (temp.length > 1) ? temp : "0" + temp;
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break;
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case "H": // hour, 24-hour format; i.e. "00" to "23"
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var temp = String(this.getHours());
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resHeap[i] = (temp.length > 1) ? temp : "0" + temp;
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break;
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case "i": // minutes; i.e. "00" to "59"
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var temp = String(this.getMinutes());
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resHeap[i] = (temp.length > 1) ? temp : "0" + temp;
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break;
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case "I": // "1" if Daylight Savings Time, "0" otherwise. Works only on the northern hemisphere
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var firstDay = new Date(this.getFullYear(), 0, 1);
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resHeap[i] = (this.getTimezoneOffset() != firstDay.getTimezoneOffset()) ? (1) : (0);
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break;
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case "J": // day of the month without leading zeros; i.e. "1" to "31"
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resHeap[i] = this.getDate();
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break;
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case "l": // day of the week, textual, long; i.e. "Friday"
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resHeap[i] = this.dayNames[this.getDay()];
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break;
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case "L": // boolean for whether it is a leap year; i.e. "0" or "1"
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resHeap[i] = (this.getFullYear() % 4) ? false : true;
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break;
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case "m": // month; i.e. "01" to "12"
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var temp = String(this.getMonth() + 1);
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resHeap[i] = (temp.length > 1) ? temp : "0" + temp;
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break;
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case "M": // month, textual, 3 letters; i.e. "Jan"
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resHeap[i] = this.monthNames[this.getMonth()];
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break;
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case "n": // month without leading zeros; i.e. "1" to "12"
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resHeap[i] = this.getMonth() + 1;
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break;
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case "O": // Difference to Greenwich time in hours; i.e. "+0200"
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var minZone = this.getTimezoneOffset();
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var mins = minZone % 60;
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var hour = String(((minZone - mins) / 60) * -1);
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if (hour.charAt(0) != "-") {
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hour = "+" + hour;
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}
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hour = (hour.length == 3) ? (hour) : (hour.replace(/([+-])(\d)/, "$1" + 0 + "$2"));
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resHeap[i] = hour + mins + "0";
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break;
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case "r": // RFC 822 formatted date; e.g. "Thu, 21 Dec 2000 16:01:07 +0200"
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var dayName = this.dayNames[this.getDay()].substr(0, 3);
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var monthName = this.monthNames[this.getMonth()].substr(0, 3);
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resHeap[i] = dayName + ", " + this.getDate() + " " + monthName + this.format(" Y H:i:s O");
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break;
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case "s": // seconds; i.e. "00" to "59"
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var temp = String(this.getSeconds());
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resHeap[i] = (temp.length > 1) ? temp : "0" + temp;
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break;
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case "S": // English ordinal suffix for the day of the month, 2 characters; i.e. "st", "nd", "rd" or "th"
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var temp = this.getDate();
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var suffixes = ["st", "nd", "rd"];
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var suffix = "";
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if (temp >= 11 && temp <= 13) {
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resHeap[i] = "th";
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} else {
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resHeap[i] = (suffix = suffixes[String(temp).substr(-1) - 1]) ? (suffix) : ("th");
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}
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break;
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case "t": // number of days in the given month; i.e. "28" to "31"
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resHeap[i] = this.getDay();
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break;
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/*
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* T: Not implemented
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*/
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case "U": // seconds since the Unix Epoch (January 1 1970 00:00:00 GMT)
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// remember that this does not return milisecs!
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resHeap[i] = Math.floor(this.getTime() / 1000);
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break;
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case "w": // day of the week, numeric, i.e. "0" (Sunday) to "6" (Saturday)
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resHeap[i] = this.getDay();
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break;
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case "W": // ISO-8601 week number of year, weeks starting on Monday
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var startOfYear = new Date(this.getFullYear(), 0, 1, 0, 0, 0, 0);
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var firstDay = startOfYear.getDay() - 1;
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if (firstDay < 0) {
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firstDay = 6;
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}
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var firstMonday = Date.UTC(this.getFullYear(), 0, 8 - firstDay);
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var thisDay = Date.UTC(this.getFullYear(), this.getMonth(), this.getDate());
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resHeap[i] = Math.floor((thisDay - firstMonday) / (1000 * 60 * 60 * 24 * 7)) + 2;
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break;
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case "y": // year, 2 digits; i.e. "99"
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resHeap[i] = String(this.getFullYear()).substring(2);
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break;
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case "Y": // year, 4 digits; i.e. "1999"
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resHeap[i] = this.getFullYear();
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break;
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case "z": // day of the year; i.e. "0" to "365"
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var firstDay = Date.UTC(this.getFullYear(), 0, 0);
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var thisDay = Date.UTC(this.getFullYear(), this.getMonth(), this.getDate());
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resHeap[i] = Math.floor((thisDay - firstDay) / (1000 * 60 * 60 * 24));
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break;
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case "Z": // timezone offset in seconds (i.e. "-43200" to "43200").
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resHeap[i] = this.getTimezoneOffset() * 60;
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break;
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default:
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resHeap[i] = heap[i];
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}
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}
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// return joined array
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return resHeap.join("");
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}
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