Nodejs Date ISO Format toISO8601String(format, offset)

Method Source Code

Date.prototype.toISO8601String = function (format, offset) {
    /* accepted values for the format [1-6]:
     1 Year://  w  w w. java2  s.  c  o m
       YYYY (eg 1997)
     2 Year and month:
       YYYY-MM (eg 1997-07)
     3 Complete date:
       YYYY-MM-DD (eg 1997-07-16)
     4 Complete date plus hours and minutes:
       YYYY-MM-DDThh:mmTZD (eg 1997-07-16T19:20+01:00)
     5 Complete date plus hours, minutes and seconds:
       YYYY-MM-DDThh:mm:ssTZD (eg 1997-07-16T19:20:30+01:00)
     6 Complete date plus hours, minutes, seconds and a decimal
       fraction of a second
       YYYY-MM-DDThh:mm:ss.sTZD (eg 1997-07-16T19:20:30.45+01:00)
    */
    if (!format) { var format = 6; }
    if (!offset) {
        var offset = 'Z';
        var date = this;
    } else {
        var d = offset.match(/([-+])([0-9]{2}):([0-9]{2})/);
        var offsetnum = (Number(d[2]) * 60) + Number(d[3]);
        offsetnum *= ((d[1] == '-') ? -1 : 1);
        var date = new Date(Number(Number(this) + (offsetnum * 60000)));
    }

    var zeropad = function (num) { return ((num < 10) ? '0' : '') + num; }

    var str = "";
    str += date.getUTCFullYear();
    if (format > 1) { str += "-" + zeropad(date.getUTCMonth() + 1); }
    if (format > 2) { str += "-" + zeropad(date.getUTCDate()); }
    if (format > 3) {
        str += "T" + zeropad(date.getUTCHours()) +
               ":" + zeropad(date.getUTCMinutes());
    }
    if (format > 5) {
        var secs = Number(date.getUTCSeconds() + "." +
                   ((date.getUTCMilliseconds() < 100) ? '0' : '') +
                   zeropad(date.getUTCMilliseconds()));
        str += ":" + zeropad(secs);
    } else if (format > 4) { str += ":" + zeropad(date.getUTCSeconds()); }

    if (format > 3) { str += offset; }
    return str;
}

Related

1. isoDate()

   Date.prototype.isoDate = function(){
     var d = this;
     return d.year();
   function toJSArray(arr) {
     var len = [arr count],
         res = [];
     while(len--){
       res.push(arr[len]);
   ...
   

2. rfc3339()

   function f(n) {
       return n < 10 ? '0' + n : n;
   Date.prototype.rfc3339 = function() {
       return this.getUTCFullYear()   + '-' +
            f(this.getUTCMonth() + 1) + '-' +
            f(this.getUTCDate())      + 'T' +
            f(this.getUTCHours())     + ':' +
            f(this.getUTCMinutes())   + ':' +
   ...
   

3. rfc3339()

   function f(n) { 
       return n < 10 ? '0' + n : n;
   Date.prototype.rfc3339 = function() {
       return this.getUTCFullYear() + '-' +
            f(this.getUTCMonth() + 1) + '-' +
            f(this.getUTCDate()) + 'T' +
            f(this.getUTCHours()) + ':' +
            f(this.getUTCMinutes()) + ':' +
   ...
   

4. rfc3339()

   function f(n) {    
       return n < 10 ? '0' + n : n;
   Date.prototype.rfc3339 = function() {
       return this.getUTCFullYear()   + '-' +
            f(this.getUTCMonth() + 1) + '-' +
            f(this.getUTCDate())      + 'T' +
            f(this.getUTCHours())     + ':' +
            f(this.getUTCMinutes())   + ':' +
   ...
   

5. rfc822date()

   "use strict";
   Date.prototype.rfc822date = function() {
       var weekday_name = { 0:'Sun', 1:'Mon', 2:'Tue', 3:'Wed', 4:'Thu', 5:'Fri', 6: 'Sat' };
       var month_name = { 0:'Jan', 1:'Feb', 2:'Mar', 3:'Apr', 4:'May', 5:'Jun', 6: 'Jul', 7:'Aug', 8:'Sep', 9:'Oct', 10:'Nov', 11:'Dec' };
       var zeropad = function(num, length) {
           if ( length === undefined ) {
               length = 2;
           var add = length - num.toString().length;
   ...
   

6. toISO8601String(offset)

   Date.prototype.toISO8601String = function (offset) {
       if (!offset) {
           var offset = 'Z';
           var date = this;
       } else {
           var d = offset.match(/([-+])([0-9]{2}):([0-9]{2})/);
           var offsetnum = (Number(d[2]) * 60) + Number(d[3]);
           offsetnum *= ((d[1] == '-') ? -1 : 1);
           var date = new Date(Number(Number(this) + (offsetnum * 60000)));
   ...
   

7. toISODateString()

   Date.prototype.toISODateString = function() {
       function pad(n){
           return n < 10 ? '0' + n : n
       function pad3(n){
           if (n < 10) return '00' + n;
           if (n < 100) return '0' + n;
           return n;
       return this.getUTCFullYear()+'-'
       + pad(this.getUTCMonth()+1)+'-'
       + pad(this.getUTCDate())+'T'
       + pad(this.getUTCHours())+':'
       + pad(this.getUTCMinutes())+':'
       + pad(this.getUTCSeconds())+'.'
       + pad3(this.getUTCMilliseconds())+'Z'
   

8. toISOLocalString()

   Date.prototype.toISOLocalString = function() {
       if ( this.toString() === 'Invalid Date' ) {
           return this.toString();
       return new Date( this.getTime() - ( this.getTimezoneOffset() * 60 * 1000 ) ).toISOString()
           .replace( 'Z', this.getTimezoneOffsetAsTime() );
   };
   Date.prototype.getTimezoneOffsetAsTime = function() {
       var offsetMinutesTotal;
   ...
   

9. toISOLocalString()

   Date.prototype.toISOLocalString = function() {
       var offset = {},
           pad2 = function( x ) {
               return ( x < 10 ) ? '0' + x : x;
           };
       if ( this.toString() === 'Invalid Date' ) {
           return this.toString();
       offset.minstotal = this.getTimezoneOffset();
   ...