title: adding a class to a calendar day in jQuery UI (MultipleDates)
body: <p>I'm using Multiple Dates picker for jQuery UI date picker. Everything was going fine until now. Turns out the developer who made it hasn't touched it in years and pre-highlighting dates no longer works. So here's my plan. I'll place my dates that i need highlighted into an array, then using jQuery to add the necessary class to the calendars. That's where I'm stuck. How do I target this particular anchor when the it looks like this:</p>
  
  <pre><code>&lt;td class=" ui-datepicker-week-end  ui-datepicker-current-day" data-handler="selectDay" data-event="click" data-month="10" data-year="2017"&gt;
  &lt;a class="ui-state-default" href="#"&gt;18&lt;/a&gt; &lt;!-- needs class: ui-state-active--&gt;
  &lt;/td&gt;
  </code></pre>
  
  <p>So how do I target based on data-month, data-year and then the number that's in the anchor? All help is greatly appreciated!!</p>