title: JS - where does this input-elemt come from (amCharts)?
body: <p>I am messing around with amCharts and trying to connect a <a href="http://www.daterangepicker.com/#config" rel="nofollow noreferrer">daterangepicker</a> to a xy-linegraph. then I found this example:</p>
  
  <p><a href="http://jsfiddle.net/5aqL5pua/" rel="nofollow noreferrer">http://jsfiddle.net/5aqL5pua/</a>
  but I dont understand something.. there is this section at the bottom</p>
  
  <pre><code> chart.addListener('rendered', function (event) {
      $(".amcharts-start-date-input").datepicker({
          dateFormat: "MM/DD/YYYY",
          startDate: chart.startDate,
          endDate: chart.endDate
      }).on("changeDate", function (dpEvent) {
          chart.zoom(dpEvent.date, chart.endDate);
      });
  });
  </code></pre>
  
  <p>where des this <code>.amcharts-start-date-input</code>-element come from? .. there is no html-element in the code?</p>