DiviArea.Data.countVisibleAreas()

DiviArea.Data.countVisibleAreas(filter)

Counts the number of visible Areas.

The filter is tested via DiviAreaItem.isType() to determine, which Areas to count.

Params

filter – string, optional

A filter to limit Areas that are included in the callback loop.
Default: all

Returns

Number of currently visible Areas (integer).

Examples

// Count all visible Areas.
console.log( 'Visible Areas:', DiviArea.Data.countVisibleAreas() );

// Count all visible Popups.
console.log( 'Visible Popups:', DiviArea.Data.countVisibleAreas( 'popup' ) );

Notes

This method is used internally to determine, whether a Popup is visible or not. When no Popup is visible, the overlay is removed (via DiviArea.hideOverlay())