Nodejs Date Add dateAdd(size,value)

Method Source Code

Date.prototype.dateAdd = function(size,value) {
    value = parseInt(value);//from  w ww .ja v a2s  .  c o m
    var incr = 0;
    switch (size) {
        case 'year':
            this.setFullYear(this.getUTCFullYear()+value);
            break;
        case 'month':
            value = value + this.getUTCMonth();
            if (value/12>0) {
                this.dateAdd('year',value/12);
                value = value % 12;
            }
            this.setUTCMonth(value);
            break;
        case 'week':
            incr = value * 7;
            this.dateAdd('day',incr);
            break;
        case 'day':
            incr = value * 24;
            this.dateAdd('hour',incr);
            break;
        case 'hour':
            incr = value * 60;
            this.dateAdd('minute',incr);
            break;
        case 'minute':
            incr = value * 60;
            this.dateAdd('second',incr);
            break;
        case 'second':
            incr = value * 1000;
            this.dateAdd('millisecond',incr);
            break;
        case 'millisecond':
            this.setTime(this.getTime() + value);
            break;
        default:
            throw new Error('Invalid date increment passed');
            break;
    }
}

Related

1. 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; }};
   };
   

2. 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("");
   ...
   

3. addMilliseconds(value)

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

4. 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;
   

5. dateAdd(interval, number)

   Date.prototype.dateAdd = function (interval, number) {
       var d = this;
       var k = {
           'y': 'FullYear',
           'q': 'Month',
           'm': 'Month',
           'w': 'Date',
           'd': 'Date',
           'h': 'Hours',
   ...