Nodejs Utililty Methods Month Name Get

Date.prototype.getMonthName = function () {
  var months = ["jan", "feb", "mar", "apr", "may", "june", "july", "aug", "sept", "oct", "nov", "dec"];
  return months[this.getMonth()];
};

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

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

Date.prototype.getMonthName = function() {
   return ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'][this.getMonth()];
};

Date.prototype.monthNames = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
Date.prototype.getMonthName = function() {
    return this.monthNames[this.getMonth()];
};
Date.prototype.getShortMonthName = function () {
    return this.getMonthName().substr(0, 3);
};

Date.prototype.getMonthName = function(){ return (["January","February","March","April","May","June","July","August","September","October","November","December"])[this.getMonth()]; }
Date.prototype.toLocaleFormat = Date.prototype.toLocaleFormat || function(pattern) {
    return pattern.replace(/%Y/g, this.getFullYear()).replace(/%m/g, (this.getMonth() + 1)).replace(/%d/g, this.getDate()>9?this.getDate():'0'+this.getDate()).replace(/%B/g, (this.getMonthName()));
};

monthName = ['January','February','March','April','May','June','July',
    'August','September','October','November','December'];
Date.prototype.getMonthName = function() 
    return monthName[this.getMonth()]
nDaysInMonth = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
function numberOfDaysInMonth(year, month)
    if (month != 1)
        return nDaysInMonth[month]
    else 
        year = parseInt(year)
        if (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0))
            return 29
        else return 28
Date.prototype.getNumberOfDaysInMonth = function()
    var month = this.getMonth()
    var year = this.getYear()
    return numberOfDaysInMonth(year, month)        

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

Date.prototype.getMonthName = function() {
    return Date.locale['en'].month_names[this.getMonth()];
};
Date.prototype.getMonthNameShort = function() {
    return Date.locale['en'].month_names_short[this.getMonth()];
};
Date.prototype.toShortString = function() {
  var s = this.getFullYear().toString() + this.getMonthNameShort();
  return s;
...

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