creating a custom calendar with moment using days/weeks and headings

Question

I am creating a schedule component using moment and react. I have created a custom calendar. How do place the days of the weeks fixed at the top like a normal calendar? So if i pass the date object september, i want to render all the dates with the correct day of the week heading above each date. I have created a fiddle here.

https://jsfiddle.net/4dbwLg6b/

var dates = ['Thu Sep 01 2016 00:00:00 GMT+0800 (CST)', 'Fri Sep 02 2016 00:00:00 GMT+0800 (CST)', 'Sat Sep 03 2016 00:00:00 GMT+0800 (CST)', 'Sun Sep 04 2016 00:00:00 GMT+0800 (CST)', 'Mon Sep 05 2016 00:00:00 GMT+0800 (CST)', 'Tue Sep 06 2016 00:00:00 GMT+0800 (CST)', 'Wed Sep 07 2016 00:00:00 GMT+0800 (CST)', 'Thu Sep 08 2016 00:00:00 GMT+0800 (CST)', 'Fri Sep 09 2016 00:00:00 GMT+0800 (CST)', 'Sat Sep 10 2016 00:00:00 GMT+0800 (CST)', 'Sun Sep 11 2016 00:00:00 GMT+0800 (CST)', 'Mon Sep 12 2016 00:00:00 GMT+0800 (CST)', 'Tue Sep 13 2016 00:00:00 GMT+0800 (CST)',' Wed Sep 14 2016 00:00:00 GMT+0800 (CST)',' Thu Sep 15 2016 00:00:00 GMT+0800 (CST)', 'Fri Sep 16 2016 00:00:00 GMT+0800 (CST)', 'Sat Sep 17 2016 00:00:00 GMT+0800 (CST)', 'Sun Sep 18 2016 00:00:00 GMT+0800 (CST)', 'Mon Sep 19 2016 00:00:00 GMT+0800 (CST)',' Tue Sep 20 2016 00:00:00 GMT+0800 (CST)', 'Wed Sep 21 2016 00:00:00 GMT+0800 (CST)', 'Thu Sep 22 2016 00:00:00 GMT+0800 (CST)', 'Fri Sep 23 2016 00:00:00 GMT+0800 (CST)', 'Sat Sep 24 2016 00:00:00 GMT+0800 (CST)', 'Sun Sep 25 2016 00:00:00 GMT+0800 (CST)', 'Mon Sep 26 2016 00:00:00 GMT+0800 (CST)', 'Tue Sep 27 2016 00:00:00 GMT+0800 (CST)', 'Wed Sep 28 2016 00:00:00 GMT+0800 (CST)', 'Thu Sep 29 2016 00:00:00 GMT+0800 (CST)', 'Fri Sep 30 2016 00:00:00 GMT+0800 (CST)']
var Hello = React.createClass({
  render: function() {


    return <div className="container">
       {dates.map(function(day){
     return(
     <div className="calendarDay">
     {moment(day).format('D').toString()}
     </div>
     )
     })}
    </div>;
  }
});

ReactDOM.render(
  <Hello name="World" />,
  document.getElementById('container')
);

this is what i have

this is what i want, days of week corresponding to date number. mon,tues,wed.....

Solution 1

Got it using a table as headers, and converted weeks and days using moment

const startWeek = moment().startOf('month').week();
const endWeek = moment().endOf('month').week();


let calendar = []
for(var week = startWeek; week<endWeek;week++){
  calendar.push({
    week:week,
    days:Array(7).fill(0).map((n, i) => moment().week(week).startOf('week').clone().add(n + i, 'day'))
  })
}

Solution 2

Base on all the answers above:

const calendar = [];
const today = moment();
const startDay = today.clone().startOf('month').startOf('week');
const endDay = today.clone().endOf('month').endOf('week');

let date = startDay.clone().subtract(1, 'day');

while (date.isBefore(endDay, 'day')) 
    calendar.push({
        days: Array(7).fill(0).map(() => date.add(1, 'day').clone())
    });

Solution 3

Based on the answer provided by caffeinescript I created this calendar that would also work around year boundaries.

const startDay = moment().clone().startOf('month').startOf('week');
const endDay = moment().clone().endOf('month').endOf('week');

var calendar = [];
var index = startDay.clone();
while (index.isBefore(endDay, 'day')) {
    calendar.push(
        new Array(7).fill(0).map(
            function(n, i) {
                return {date: index.add(1, 'day').date()};
            }
        )
    );
}

Solution 4

Simplified version

function weekDays(month, year) {
  const endDate = moment().date(0).month(month).year(year);

  return Array(endDate.date()).fill(0).map((_, i) => moment().date(i + 1).month(month).year(year))
    .map((day) => ({ day, week: day.week() }))
    .filter(({ week }, i, arr) => arr.findIndex((info) => info.week === week) === i)
    .map(({ day, week }) => ({ week, days: Array(7).fill(0).map((_, i) => moment(day).week(week).startOf('week').add(i, 'day')) }));
}

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