Contents

export default function meetupDay(year, month, dayOfWeek, which) {
  const candidates = getCandidates(year, month, dayOfWeek);
  let res;

  which = which.toLowerCase();

  if (which === 'teenth') {
    res = find(candidates, d => d.getDate() >= 13 && d.getDate() <= 19);
  } else if (which === 'last') {
    res = candidates.pop();
  } else {
    which = parseInt(which) - 1;
    res = candidates.slice(which, which + 1).pop();
  }

  if (!res) { throw new MeetupDayException('Day not found!'); }

  return res;
}

function getCandidates(year, month, dayOfWeek) {
  let d,
    i,
    numDaysInMonth = new Date(year, month + 1, 0).getDate(),
    res = [];

  for (i = 0; i < numDaysInMonth; i++) {
    d = new Date(year, month, i + 1);

    if (d.getDay() === getDayIndex(dayOfWeek)) {
      res.push(d);
    }
  }

  return res;
}

function getDayIndex(day) {
  const daysInd = {
    sunday: 0,
    monday: 1,
    tuesday: 2,
    wednesday: 3,
    thursday: 4,
    friday: 5,
    saturday: 6,
  };

  day = day.toLowerCase();

  return daysInd[day];
}

function find(ary, callback) {
  for (let i = 0; i < ary.length; i++) {
    if (callback(ary[i], i, ary)) { return ary[i]; }
  }
}

function MeetupDayException(message) {
  this.message = message;
  this.name = 'MeetupDayException';
}

Version data entries

185 entries across 185 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.179	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.178	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.177	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.176	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.175	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.174	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.173	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.172	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.171	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.170	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.169	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.167	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.166	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.165	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.164	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.163	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.162	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.161	tracks/ecmascript/exercises/meetup/example.js
trackler-2.2.1.160	tracks/ecmascript/exercises/meetup/example.js