Nodejs Date Format format(f)

Method Source Code

Date.prototype.format = function(f) {
   /* www .j  a v  a  2s . c  om*/
    if (!this.valueOf()) return " ";
    var weekName = ["?", "?", "?", "?", "?", "?", "?"];
    var d = this;
     
    return f.replace(/(yyyy|yy|MM|dd|E|hh|mm|ss|a\/p)/gi, function($1) {
        switch ($1) {
            case "yyyy": return d.getFullYear();
            case "yy": return (d.getFullYear() % 1000).zf(2);
            case "MM": return (d.getMonth() + 1).zf(2);
            case "dd": return d.getDate().zf(2);
            case "E": return weekName[d.getDay()];
            case "HH": return d.getHours().zf(2);
            case "hh": return ((h = d.getHours() % 12) ? h : 12).zf(2);
            case "mm": return d.getMinutes().zf(2);
            case "ss": return d.getSeconds().zf(2);
            case "a/p": return d.getHours() < 12 ? "??" : "??";
            default: return $1;
        }
    });
};
 
String.prototype.string = function(len){var s = '', i = 0; while (i++ < len) { s += this; } return s;};
String.prototype.zf = function(len){return "0".string(len - this.length) + this;};
Number.prototype.zf = function(len){return this.toString().zf(len);};

var debugMode = true;

function debug(message) {
   if (debugMode) {
      console.log(message);
   }
}

Related

1. format()

   function ISODateString(aDate) {
     function pad(aNumber) {
       return aNumber < 10 ? '0' + aNumber : aNumber;
     return aDate.getUTCFullYear() + '-' +
            pad(aDate.getUTCMonth() + 1) + '-' +
            pad(aDate.getUTCDate());
   Date.prototype.format = function () {
   ...
   

2. format()

   Date.prototype.format = function() {
     var d = new Date();
     var curr_date = d.getDate();
     var curr_month = d.getMonth();
     var curr_year = d.getFullYear();
     return (curr_date + "/" + curr_month + "/" + curr_year);
   

3. format()

   Date.prototype.format = function(){
     var formatMonth = function(month, numberOfDigits){
       month += 1;
       month = insertZerosLeft(month, numberOfDigits);
       return month;
     };
     var insertZerosLeft = function(data, numberOfDigits){
       data = data.toString();
       var zeros = '';
   ...
   

4. format()

   Date.prototype.format = function () {
       var month = this.getMonth() + 1;
       var date = this.getDate();
       month < 10 && (month = "0" + month);
       date < 10 && (date = "0" + date);
       return [this.getFullYear(), month, date].join("-");
   };
   

5. format(dateFormat)

   Date.prototype.format = function (dateFormat) {
       var day = this.getDate();
       var month = this.getMonth() + 1;
       var year = this.getFullYear();
       if (dateFormat === "dd/mm/yyyy")
           return '{0}/{1}/{2}'.format(day, month > 9 ? month : '0' + month, year);
   };
   ...
   

6. format(f)

   var gsMonthNames = new Array(
   'January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'
   );
   var gsDayNames = new Array(
   'Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'
   );
   Date.prototype.format = function (f) {
       if (!this.valueOf())
           return ' ';
   ...
   

7. format(f)

   Date.prototype.format = function(f) {
       if (!this.valueOf()) return " ";
       var weekName = [
           'Sunday',
           'Monday',
           'Tuesday',
           'Wednesday',
           'Thursday',
           'Friday',
   ...
   

8. format(f)

   var DayNames = new Array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday',
               'Friday', 'Saturday');
   var MonthNames = new Array('January','February','March','April','May','June',
               'July', 'August', 'September', 'October', 'November', 'December');
   if(!encodeURIComponent) {
       encodeURIComponent = function(str){ return escape(str); };
       decodeURIComponent = function(str){ return unescape(str); };
   };
   Date.prototype.format = function(f) {
   ...
   

9. format(fmt)

   Date.prototype.format = function (fmt) {
       var date = this;
       return fmt.replace(
           /\{([^}:]+)(?::(\d+))?\}/g,
           function (s, comp, pad) {
               var fn = date["get" + comp];
               if (fn) {
                   var v = (fn.call(date) +
                       (/Month$/.test(comp) ? 1 : 0)).toString();
   ...