How to highlight current week in air date picker calendar

Question

http://t1m0n.name/air-datepicker/docs/

I am using air date picker calendar. How can i highlight the current week in the calendar. See my fiddle location.

http://jsfiddle.net/oua394nt/

<input type="text"
    data-range="true"
    data-multiple-dates-separator=" - "
    data-language="en" id="my-element"
    class="datepicker-here"/>

Answer 1

Since AFAICS Air Datepicker does not adds week number into the cells data-, you could use a script to get the week number (edited from this SO answer):

jsFiddle demo

• Get and store the current week number.
• Use the Air Datepicker onRenderCell() method and add a class to the cells whose date's week number equals the current week number:

CSS:

.-current-week- {
  background: red;
}

JS:

function getWeek(d) {
  // https://stackoverflow.com/a/6117889/383904
  d = new Date(Date.UTC(d.getFullYear(), d.getMonth(), d.getDate()));
  d.setUTCDate(d.getUTCDate() + 4 - (d.getUTCDay()||7));
  var yearStart = new Date(Date.UTC(d.getUTCFullYear(),0,1));
  var weekNo = Math.ceil(( ( (d - yearStart) / 86400000) + 1)/7);
  return {year:d.getUTCFullYear(), number: weekNo};
}

var currentWeekNumber = getWeek(new Date()).number;

$('#my-element').datepicker({
  onRenderCell: function(date, cellType) {
    if (cellType === 'day' && getWeek(date).number === currentWeekNumber) {
      return {
        classes: '-current-week-',
      }
    }
  }
});