title: How to use script to reload the jstree with different ajax data source
body: <p>In my situation,</p>
  
  <p>the part of the code about data source like this:</p>
  
  <p>"json_data" : {
      "ajax" : {
          "async" : false,
          "url" : "setup/locationTreeJson.htm?id=-1"
      }
  }</p>
  
  <p>and on the same page,this is a  element,
  the goal is when i change the  value,
  then use some javascript to change the datasource of the jstree like:</p>
  
  <p>"setup/locationTreeJson.htm?id=[THE_VALUE_FROM_'select element']"</p>
  
  <p>then reload the jstree to display the different data</p>
  
  <p>so, how can I do like this?</p>
  
  <p>best regards</p>