Hiding Tooltip on Click

The following example demonstrates using the on method to attach a custom event listener that will hide the Tooltip on click events. The click function has access to the tooltip because all of the on events have the internal class binded as this.

var data = [
  {id: "alpha", value: 29},
  {id: "beta",  value: 10},
  {id: "gamma", value: 2},
  {id: "delta", value: 29},
  {id: "eta",   value: 25}

new d3plus.Treemap()
    click: function() {
      if (this._tooltip) {