title: prepend/append works in Chrome and Firefox but not IE11 and Edge
body: <p>Trying to prepend data inside a text box in Chrome and Firefox works.
  Get error:  SCRIPT438: Object doesn't support property or method 'prepend' 
  in IE11 and Edge. Thx</p>
  
  <pre><code>    function init_TGs(){
          if (confirm("Initialize TinyG's?")){
              $.ajax({
                  type: 'POST',
                  url: "init_TGs", 
                  data: 'None',
                  success: function(result){
                      if (result != ''){
                          var rslt= result;
                          var item = document.getElementById('TextArea1');
                          item.prepend(rslt);
                      }}
                  });
              }};
  </code></pre>