When JMap Cloud NG Core lib is started, it doesn't load projects thumbnails, but you can load it
by setting the startup option "loadAllProjectThumbnails" as true.
If no thumbnail has been loaded it returns an empty string.
Returns string
Throws
If no project is loaded
Example
// returns the project initial extent if exists JMap.Project.getInitialExtent()
JMap.Project.getBase64ImageThumbnail
Returns loaded JMap project base64 image thumbnail.
When JMap Cloud NG Core lib is started, it doesn't load projects thumbnails, but you can load it by setting the startup option "loadAllProjectThumbnails" as true.
If no thumbnail has been loaded it returns an empty string.