user interface - Jquery UI Datepicker: Highlight first -


i want add class first 3 selectable days if var express true.

the following code works if select date classes being removed

$datepicker.datepicker({         daynamesmin: ["s", "m", "d", "m", "d", "f", "s"],         beforeshowday:$.datepicker.noweekends,         firstday: 1,         mindate: d,         dateformat: "dd.mm.yy",         onselect: function (datetext, inst) {              $('.delivery-date').text(datetext);              var printreleasedateparts =datetext.split('.');             var printreleasedate = new date(printreleasedateparts[2],printreleasedateparts[1]-1,printreleasedateparts[0]);             printreleasedate.setdate(printreleasedate.getdate() - printrelease);             $('.print-release-date').text($.datepicker.formatdate('dd.mm.yy', printreleasedate));             $datepicker.removeclass('express');             if (express) {                 $datepicker.addclass('express');                 $('*[data-handler="selectday"]:lt(3)').addclass('express');             } else {                 $datepicker.removeclass('express');                 $('*[data-handler="selectday"]:lt(3)').removeclass('express');              }          },         onchangemonthyear: function(){             console.log('onchangemonthyear');          }     });

the var express set checkbox. in end, user should able select highlighted express-delivery-date if checkbox checked. express-delivery-date 3 days before regular initiated first selectable day. first selectable day changed checkbox on change

$('input:checkbox[name=option-express]').change(function () {             if ($(this).prop("checked") == true) {                 $datepicker.addclass('express');                 var d = calculatemindate(deliveryexpress);                 $datepicker.datepicker("option", "mindate", d);                 $('*[data-handler="selectday"]:lt(3)').addclass('express');                  express = true;               } else {                 $datepicker.removeclass('express');                 var d = calculatemindate(deliveryregular);                 $datepicker.datepicker("option", "mindate", d);                 $('*[data-andler="selectday"]:lt(3)').removeclass('express');                  express = false;             }         });

only business days should highlighted.

so what's best practice highlight first days?

edit:

now implemented custom function beforeshowday no luck. console.log fired 4 times class isn't added.

var expressdates = ["08/29/2016", "08/30/2016", "08/31/2016", "09/01/2016"]; function expressdays(date) {             var noweekend = $.datepicker.noweekends(date);             if (noweekend[0] && express) {                 (var = 0; < expressdates.length; i++) {                     if (new date(expressdates[i]).tostring() == date.tostring()) {                         console.log('express day!')                         return [true, 'express', 'express'];                     }                 }                 return [true, ''];             } else {                 return noweekend;             }         }

ok, figured out self. modified function beforeshowday. put express date in array , check $.inarray()

function expressdays(date) {             var noweekend = $.datepicker.noweekends(date);             var expressdates = [];             (var = 0; < deliveryexpress-1; i++) {                 expressdates.push(moment($datepicker.datepicker("option", "mindate")).businessadd(i).format('l'))             }              if (noweekend[0] && express) {                 var datestring = $.datepicker.formatdate('mm/dd/yy', date);                 if($.inarray(datestring,expressdates) >=0){                     return [true, 'express', 'express'];                 }else{                     return [true, 'noexpress'];                 }             } else {                 return noweekend;             }         }

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