Nodejs Date Format format(strFormat)

Method Source Code

/*/*from w w w.jav a  2  s  . c  o m*/
   DateFormat.js by Bruce Sedlacek @FuzzyBS
*/

Date.prototype.format = function (strFormat) {
   'use strict';
   var d = new Date(this),
      mon = ['', 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
      month = ['', 'January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
      day = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
      weekday = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
      v = {
         's': String(d.getSeconds()),
         'ss': (d.getSeconds() < 10 ? '0' : '') + d.getSeconds(),
         'm': String(d.getMinutes()),
         'mm': (d.getMinutes() < 10 ? '0' : '') + d.getMinutes(),
         'h': String((((d.getHours() + 11) % 12) + 1)),
         'hh': ((((d.getHours() + 11) % 12) + 1) < 10 ? '0' : '') + (((d.getHours() + 11) % 12) + 1),
         'H': String(d.getHours()),
         'HH': (d.getHours() < 10 ? '0' : '') + d.getHours(),
         'a': (d.getHours() < 12 ? 'am' : 'pm'),
         'aa': (d.getHours() < 12 ? 'a.m.' : 'p.m.'),
         'A': (d.getHours() < 12 ? 'AM' : 'PM'),
         'AA': (d.getHours() < 12 ? 'A.M.' : 'P.M.'),
         'd': String(d.getDate()),
         'dd': (d.getDate() < 10 ? '0' : '') + d.getDate(),
         'ddd': day[d.getDay()],
         'dddd': weekday[d.getDay()],
         'M': String(d.getMonth()),
         'MM': (d.getMonth() < 10 ? '0' : '') + d.getMonth(),
         'MMM': mon[d.getMonth()],
         'MMMM': month[d.getMonth()],
         'yy': String(d.getYear()),
         'yyyy': String(d.getFullYear()),
         'z': (d.getTimezoneOffset() > 0 ? '+' : '') + (Math.int(d.getTimezoneOffset() / 60) < 10 ? '0' : '') + String(Math.int(d.getTimezoneOffset() / 60)) + ((d.getTimezoneOffset() % 60) < 10 ? '0' : '') + String(d.getTimezoneOffset() % 60)
      };
   return strFormat.replace(/(s+|m+|h+|H+|a+|A+|d+|M+|y+|z+)/g, function (key) {
      return v[key] || key;
   });
};

Related

1. format(pattern)

   Date.prototype.format = function(pattern) {
     var returnValue = pattern;
     var format = {
       "y+": this.getFullYear(),
       "M+": this.getMonth() + 1,
       "d+": this.getDate(),
       "H+": this.getHours(),
       "m+": this.getMinutes(),
       "s+": this.getSeconds(),
   ...
   

2. format(pattern)

   Date.prototype.format = function(pattern)
     if(!pattern){
       pattern = "yyyy-MM-dd";
     var o =
       "M+" : this.getMonth() + 1, 
       "d+" : this.getDate(), 
   ...
   

3. format(pattern)

   Date.prototype.format = function(pattern){
       var pattern = pattern;    
       var dateObj = {
           "Y" : this.getFullYear(),
           "M" : this.getMonth()+1,
           "D" : this.getDate(),
           "h" : this.getHours(),
           "m" : this.getMinutes(),
           "s" : this.getSeconds()
   ...
   

4. format(pattern, gmt)

   Date.prototype.format = function(pattern, gmt) {
     var result = '';
     var date = this;
     if(gmt != undefined) {
       var utc = date.getTime() + (date.getTimezoneOffset() * 60000);
       date = new Date(utc + (3600000 * gmt));
     for (var i = 0; i < pattern.length; i++) {
       var c = pattern[i];
   ...
   

5. format(str)

   Date.prototype.format = function (str) {
     const o = {
       'y+': this.getFullYear(),
       'M+': this.getMonth() + 1,
       'd+': this.getDate(),
       'h+': this.getHours(),
       'm+': this.getMinutes(),
       's+': this.getSeconds()
     Object.keys(o).forEach(element => {
       str = str.replace(new RegExp(element), substr => {
         return String.prototype.padStart.call(o[element], substr.length, '0')
       })
     })
     return str
   

6. format1()

   Date.prototype.format1 = function() {
       return "" + this.getMonth() + this.getFullYear();
   function f(d) {
       for (var i=0; i<60; i++) {
           assertEq(d.format1(), "91987");
   f(new Date("10/10/1987 1:11:11"));
   ...
   

7. formatAMPM(date)

   function formatAMPM(date) {
     var hours = date.getHours();
     var minutes = date.getMinutes();
     var ampm = hours >= 12 ? 'pm' : 'am';
     hours = hours % 12;
     hours = hours ? hours : 12; 
     minutes = minutes < 10 ? '0'+minutes : minutes;
     var strTime = hours + ':' + minutes + ' ' + ampm;
     return strTime;
   ...
   

8. formatDate(date)

   function formatDate(date) {
     if(date instanceof Date === false) {
       return console.log("err");
     var year = date.getFullYear();
     var month = pad(date.getMonth() + 1);
     var day = pad(date.getDate());
     return [year, month, day].join('-');
   

9. formatDate(date)

   function formatDate(date){
     return date.split('-').reverse().join('/');