Nodejs Date Format formatDate(date)

Method Source Code

function formatDate(date) {
  if(date instanceof Date === false) {
    //throw err/*from w w  w  .  ja  v a2 s .  c  o m*/
    return console.log("err");
  }

  var year = date.getFullYear();
  var month = pad(date.getMonth() + 1);
  var day = pad(date.getDate());
  
  return [year, month, day].join('-');
}

Related

1. 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];
   ...
   

2. 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
   

3. format(strFormat)

   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()),
   ...
   

4. 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"));
   ...
   

5. 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;
   ...
   

6. formatDate(date)

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

7. formatDate(format)

   Date.prototype.formatDate = function(format) {
     var date = this,
       day = date.getDate(),
       month = date.getMonth() + 1,
       year = date.getFullYear(),
       hours = date.getHours(),
       minutes = date.getMinutes(),
       seconds = date.getSeconds();
     if (!format) {
   ...
   

8. formatDate(format)

   Date.prototype.formatDate = function (format) {
       var date = this,
           day = date.getDate(),
           month = date.getMonth() + 1,
           year = date.getFullYear(),
           hours = date.getHours(),
           minutes = date.getMinutes(),
           seconds = date.getSeconds();
       if (!format) {
   ...
   

9. formatDate(format)

   Date.prototype.formatDate = function(format) {
     var months = new Array("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec");
     var yyyy = this.getFullYear();
     var yy = yyyy.toString().substring(2);
     var m = this.getMonth() + 1;
     var mm = m < 10 ? "0" + m : m;
     var mmm = months[m - 1];
     var d = this.getDate();
     var dd = d < 10 ? "0" + d : d;
   ...