Nodejs Date Format format(pattern)

Method Source Code

Date.prototype.format = function(pattern)
{
   if(!pattern){// w  w  w  . jav  a 2s.c  o m
      pattern = "yyyy-MM-dd";
   }
   var o =
   {
      "M+" : this.getMonth() + 1, // 
      "d+" : this.getDate(), // 
      "h+" : this.getHours() % 12 == 0 ? 12 : this.getHours() % 12, // 
      "H+" : this.getHours(), // 
      "m+" : this.getMinutes(), // 
      "s+" : this.getSeconds(), //
      "q+" : Math.floor((this.getMonth() + 3) / 3), //
      "S" : this.getMilliseconds()
   };
   var week =
   {
      "0" : "\u65e5",
      "1" : "\u4e00",
      "2" : "\u4e8c",
      "3" : "\u4e09",
      "4" : "\u56db",
      "5" : "\u4e94",
      "6" : "\u516d"
   };
   if (/(y+)/.test(pattern))
   {
      pattern = pattern.replace(RegExp.$1, (this.getFullYear() + "")
            .substr(4 - RegExp.$1.length));
   }
   if (/(E+)/.test(pattern))
   {
      pattern = pattern
            .replace(
                  RegExp.$1,
                  ((RegExp.$1.length > 1) ? (RegExp.$1.length > 2 ? "\u661f\u671f"
                        : "\u5468")
                        : "")
                        + week[this.getDay() + ""]);
   }
   for ( var k in o)
   {
      if (new RegExp("(" + k + ")").test(pattern))
      {
         pattern = pattern.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k])
               : (("00" + o[k]).substr(("" + o[k]).length)));
      }
   }
   return pattern;
};

Related

1. format(format,value)

   Date.prototype.format = function (format,value) {
     if (!format) {
       format = "yyyy-MM-dd hh:mm:ss";
     if(value==''||value==null){
       return '';
     var strdata=value.replace(/-/g,"/");
     var index=strdata.indexOf(".");
   ...
   

2. format(formatStr)

   Date.prototype.format = function(formatStr)   
       var str = formatStr;   
       var Week = ['?','?','?','?','?','?','?'];  
       str=str.replace(/yyyy|YYYY/,this.getFullYear());   
       str=str.replace(/yy|YY/,(this.getYear() % 100)>9?(this.getYear() % 100).toString():'0' + (this.getYear() % 100));   
       str=str.replace(/MM/,this.getMonth()>9?this.getMonth().toString():'0' + this.getMonth());   
       str=str.replace(/M/g,this.getMonth());   
       str=str.replace(/w|W/g,Week[this.getDay()]);   
   ...
   

3. format(formatStr)

   Date.prototype.format = function(formatStr) {
       var str = formatStr;
       var Week = ['?','?','?','?','?','?','?'];
       str = str.replace(/yyyy|YYYY/,this.getFullYear());
       str = str.replace(/yy|YY/,(this.getYear() % 100)>9?(this.getYear() % 100).toString():'0' + (this.getYear() % 100));
       str = str.replace(/MM/,this.getMonth()>9?this.getMonth().toString():'0' + this.getMonth());
       str = str.replace(/M/g,this.getMonth());
       str = str.replace(/w|W/g,Week[this.getDay()]);
       str = str.replace(/dd|DD/,this.getDate()>9?this.getDate().toString():'0' + this.getDate());
   ...
   

4. format(formatStr)

   Date.prototype.format= function(formatStr) 
   var date = this;
   var timeValues = function(){};
   timeValues.prototype = {
      year:function(){
       if(formatStr.indexOf("yyyy")>=0)
        return date.getYear();
   ...
   

5. 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(),
   ...
   

6. 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()
   ...
   

7. 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];
   ...
   

8. 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
   

9. 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()),
   ...