你可以试试这样的:

var array = ["2016-08-29", "2013-03-15", "2013-03-16"]

$(function() {
  var today = new Date();
  $("#datepicker").datepicker({
    dateFormat: 'dd MM yy',
    beforeShowDay: function(date) {
      var string = jQuery.datepicker.formatDate('yy-mm-dd', date);
      if (contains(array,string)) {
        debugger;
        return [false, '']
      } else {
        var day = date.getDay();
        return [(day != 0), ''];
      }
    },
    //beforeShowDay: $.datepicker.noWeekends,
    firstDay: 1,
    minDate: today.getHours() >= 14 ? 2 : 1,
    maxDate: '+1m',
    onSelect: function(dateText, inst) {
      $('#checkout_attribute_1').val(dateText);
    }
  });
});

function contains(a, obj) {
    var i = a.length;
    while (i--) {
       if (a[i] === obj) {
           return true;
       }
    }
    return false;
}

https://jsfiddle.net/9hrhyd4q/