visible

The visible() method, called without any parameters, will return true if the TreeMap widget is visible and false otherwise.
The visible(bool) method is used to update a TreeMap's visible state. Passing true will show and false will hide it.

<div id="treemap" />

<script type="text/javascript">
    $(function () {
        $('#treemap').shieldTreeMap({
              cls: "treemap",
              valueTemplate: "{value}",
              dataSource: {
                    data: [
                        {
                            "title": "Fastest Cars in the World",
                            "value": 1301,
                            "items": [
                                {
                                    "title": "Hennessey Venom GT",
                                    "value": 435
                                },
                                {
                                    "title": "Vector Avtech WX8 Hypercar",
                                    "value": 435
                                },
                                {
                                    "title": "Bugatti Veyron 16.4 Super Sport",
                                    "value": 431
                                }
                            ]
                        }
                    ]
                }
          });
    });

    // hide TreeMap widget
    $("#treemap").swidget().visible(false);
</script>

<style>
      .treemap {
         max-width: 600px;
         height: 500px;
      }
</style>