title: Hover data and click data from dash_table on dash
body: <p>I have created dash_table on dashboard. I want hoverdata from table when I am hovering mouse and clickdata when I am clicking on any cell from table.
  I have used following code to get the active cell index. But I don't know how to use it for fetching datatable cell value.</p>
  
  <pre><code>@app.callback(Output('click-data', 'children'),
      [Input('datatable', 'active_cell')])
  def display_click_data(active_cell):
      return json.dumps(active_cell, indent=2)
  </code></pre>
  
  <p>Please guide how to use tooltip parameter in dash table.</p>