Sha256: e329f8ad7fb8de127891b95fc711d3335a6b9ee62dc7101977b5bcb72dc1034c
Contents?: true
Size: 1.3 KB
Versions: 30
Compression:
Stored size: 1.3 KB
Contents
export default function meetupDay (year, month, dayOfWeek, which) {
let candidates = getCandidates(year, month, dayOfWeek);
let res;
which = which.toLowerCase();
if (which === 'teenth') {
res = find(candidates, d => {
return 13 <= d.getDate() && 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
30 entries across 30 versions & 1 rubygems