Nodejs Month Calculate toMonthStart()

Method Source Code

Date.prototype.toMonthStart = function () {
    var date = new Date(this);
    date.setDate(1);//from  w  w w.  j a va 2 s. co m
    return date;
};

Related

1. monthName(language)

   Date.prototype.monthName = function(language) {
     var monthName = "";
     language = language || 'en';
     switch(language.toLowerCase()) 
       case 'en':
         monthName = ['January','February','March','April','May','June','July', 'August','September','October','November','December'];
         break;
       case 'es':
   ...
   

2. monthOfYear()

   Date.prototype.monthOfYear = function(){
     var months = ["January", "February", "March", 
                   "April", "May", "June", "July", 
                   "August", "September", "October", 
                   "November", "December"];
     return months[this.getMonth()];
   

3. previous_month()

   Date.prototype.previous_month = function() {
     var day = this.getDate();
     var month = this.getMonth() - 1;
     var year = this.getFullYear();
     if (month < 0) {
       month = 11;
       year--;
     return new Date(year, month, day);
   ...
   

4. subMonths(value)

   Date.prototype.subMonths = function(value) {
     var date = this.getDate();
     this.setMonth(this.getMonth() - value);
     if (this.getDate() < date) {
       this.setDate(0);
     return this;
   };
   

5. toMonthEnd()

   Date.prototype.toMonthEnd = function () {
       var date = new Date(this);
       date.setMonth(date.getMonth() + 1);
       date.setDate(0);
       return date;
   };