Converting Dates to AP Style, using Javascript

apdate.js

// Adapated from: https://github.com/banterability/dateline

var APDate = function(dateObj){
  this.dayNames = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
  this.monthNames = ['Jan.', 'Feb.', 'March', 'April', 'May', 'June', 'July', 'Aug.', 'Sept.', 'Oct.', 'Nov.', 'Dec.'];
  return this.Deadline(dateObj);
};

APDate.prototype.Deadline = function(dateObj) {
  var that = this;

  if (dateObj == null) {
    dateObj = new Date();
  }

  dateObj.getAPTime = function(options) {
    var hour, hours, minute, minutes, timeOfDay;
    if (options == null) {
      options = {};
    }
    hours = dateObj.getHours();
    minutes = dateObj.getMinutes();
    if (hours === 0 && minutes === 0) {
      return 'midnight';
    }
    if (hours === 12 && minutes === 0) {
      return 'noon';
    }
    timeOfDay = hours < 12 ? 'a.m.' : 'p.m.';
    hour = that.formatHours(hours);
    if (that.showMinutes(minutes, options)) {
      return "" + hour + " " + timeOfDay;
    }
    minute = that.formatMinutes(minutes);
    return "" + hour + ":" + minute + " " + timeOfDay;
  };

  dateObj.getAPDate = function(options) {
    var date, month, monthName, year;
    if (options == null) {
      options = {};
    }
    month = dateObj.getUTCMonth();
    date = dateObj.getUTCDate();
    year = dateObj.getUTCFullYear();

    monthName = that.monthNames[month];
    if (that.useDayName(dateObj, options)) {
      return that.getDayOfWeek(dateObj);
    } else if (that.showYear(year, options)) {
      return "" + monthName + " " + date;
    } else {
      return "" + monthName + " " + date + ", " + year;
    }
  };

  return dateObj;

};

APDate.prototype.formatHours = function(hours) {
  if (hours === 0) {
    return 12;
  }
  if (hours > 12) {
    return hours - 12;
  }
  return hours;
};

APDate.prototype.topOfHour = function(minutes) {
  return minutes === 0;
};

APDate.prototype.formatMinutes = function(minutes) {
  if (minutes < 10) {
    return "0" + minutes;
  }
  return minutes;
};

APDate.prototype.showMinutes = function(minutes, options) {
  return this.topOfHour(minutes) && (options.includeMinutes == null);
};


APDate.prototype.showYear = function(year, options) {
  return (year === new Date().getFullYear()) && (options.includeYear == null);
};

APDate.prototype.getDayOfWeek = function(dateObj) {
  return this.dayNames[dateObj.getDay()];
};

APDate.prototype.useDayName = function(dateObj, options) {
  return (options.useDayNameForLastWeek != null) && this.withinSevenDays(new Date(), dateObj);
};

APDate.prototype.withinSevenDays = function(date1, date2) {
  var oneDayInMs, _ref;
  oneDayInMs = 1000 * 60 * 60 * 24;
  return (-7 < (_ref = (date2 - date1) / oneDayInMs) && _ref < 0);
};

// A specifc date
// new APDate(new Date('2014-02-17')).getAPDate();
 
// Today
// new APDate().getAPDate();