The NavigationHelpButton is a single button widget for displaying instructions for navigating the globe with the mouse.
| Name | Type | Description | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| options | Object | Object with the following properties: 
 | 
Throws:
- 
    DeveloperError : Element with id "container" does not exist in the document.
Example:
// In HTML head, include a link to the NavigationHelpButton.css stylesheet,
// and in the body, include: <div id="navigationHelpButtonContainer"></div>
const navigationHelpButton = new Cesium.NavigationHelpButton({
    container : 'navigationHelpButtonContainer'
});Members
    Gets the parent container.
viewModel : NavigationHelpButtonViewModel
    Gets the view model.
Methods
    Destroys the widget.  Should be called if permanently
removing the widget from layout.
Returns:
    true if the object has been destroyed, false otherwise.
    
