onBeforeCellRender for a ressource on a day

Let's say you have a list of days to be highlighted:

var days = ["2016-01-01", "2016-05-01"];

You can use the following code to highlight these days in the Scheduler:

dp.onBeforeCellRender = function(args) {
  var highlight = DayPilot.list(days).map(function(src) { return new DayPilot.Date(src); }).some(function(day) { return day === args.cell.start.getDatePart(); });
  if (highlight) {
   args.cell.backColor = "#aaa";
  }
};

And a modification for resource/day combination:

    var list = [{id: "A", day:"2016-01-01"}, {id: "B", day: "2016-05-01"}];

    dp.onBeforeCellRender = function(args) {
        var highlight = DayPilot.list(list).map(function(src) { return {id: src.id, day: new DayPilot.Date(src.day)}; }).some(function(item) { return item.id === args.cell.resource && item.day === args.cell.start.getDatePart(); });
        if (highlight) {
            args.cell.backColor = "#aaa";
        }
    };