be((cj.EventData e,Map args) {
    Element headerEl=  args['node'];
    headerEl.children.clear();
    cj.Column col  = args['column'];
    InputElement inputEl= new InputElement();
    inputEl.dataset['columnId'] = col.field;
    headerEl.append(inputEl);
    inputEl.onKeyUp.listen( (KeyboardEvent ke){
            data.setKeyword(col.field,inputEl.value);
            sg.invalidate();
      });
  });
</code>
          </pre>
          </div>
          <div class="col-md-12">
            <div id="grid" ></di