javascript - Why is Jquery UI Datepicker not making dates unavailable? -


i'm developing datepicker allow administrator choose dates holiday makers staying @ property, , store data in database. want update datepicker potential customers see unavailable dates greyed out.

i've managed retrieve data database , pass via json js variable i'm having no luck greying out beforeshowday method. console.log on datestoblock var showed following info:

object {fromdate: "2014-02-28", todate: "2014-02-23"}

and code far. 

var datestoblock = <?php echo json_encode($unavailabledates); ?>;     $(function() {       var unavailabledates = ["false","","not available"];        $( "#fromdatepicker" ).datepicker({         dateformat: "yy-mm-dd",         beforeshowday: function(datestoblock) {           return unavailabledates;         }       });   });


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