Nodejs Date Add dateAdd(interval, number)

Method Source Code

Date.prototype.dateAdd = function (interval, number) {
    var d = this;
    var k = {/*  w w  w  .j  a va 2 s  .c o  m*/
        'y': 'FullYear',
        'q': 'Month',
        'm': 'Month',
        'w': 'Date',
        'd': 'Date',
        'h': 'Hours',
        'n': 'Minutes',
        's': 'Seconds',
        'ms': 'MilliSeconds'
    };
    var n = {'q': 3, 'w': 7};
    eval('d.set' + k[interval] + '(d.get' + k[interval] + '()+' + ((n[interval] || 1) * number) + ')');
    return d;
};

Related

1. add(interval, value)

   Date.MILLI = 'ms';
   Date.SECOND = 's';
   Date.MINUTE = 'mi';
   Date.HOUR = 'h';
   Date.DAY = 'd';
   Date.MONTH = 'mo';
   Date.YEAR = 'y';
   Date.prototype.add = function(interval, value){
     var d = this.clone();
   ...
   

2. add(thisMany)

   Date.prototype.add = function(thisMany) {
     var self = this;
     return { minutes: function() {
       var newDate = new Date(self);
       newDate.setMinutes(self.getMinutes() + thisMany);
       return newDate; }};
   };
   

3. addDate(num)

   Number.prototype.addDate=function(num){
       var date=this;
       var dates=[];
       var d=new Date(Number(date).dateFormat());
       d.setDate(d.getDate()+(num));
       dates.push(d.getFullYear());
       dates.push(Number(d.getMonth()+1).addZero());
       dates.push(Number(d.getDate()).addZero());
       var next_date=dates.join("");
   ...
   

4. addMilliseconds(value)

   Date.prototype.addMilliseconds = function(value)
       this.setTime(this.getTime() + value);
       return this;
   };
   

5. dateAdd(interval, number)

   Date.prototype.dateAdd = function (interval, number) {
       var d = new Date(this);
       var k = { 'y': 'FullYear', 'q': 'Month', 'm': 'Month', 'w': 'Date', 'd': 'Date', 'h': 'Hours', 'n': 'Minutes', 's': 'Seconds', 'ms': 'MilliSeconds' };
       var n = { 'q': 3, 'w': 7 };
       eval('d.set' + k[interval] + '(d.get' + k[interval] + '()+' + ((n[interval] || 1) * number) + ')');
       return d;
   

6. dateAdd(size,value)

   Date.prototype.dateAdd = function(size,value) {
       value = parseInt(value);
       var incr = 0;
       switch (size) {
           case 'year':
               this.setFullYear(this.getUTCFullYear()+value);
               break;
           case 'month':
               value = value + this.getUTCMonth();
   ...