JMap.Application.Panel.existById
Returns true if the panel exists for a given panel id.
The panel id to test
// return true if panel id="layer" existsJMap.Application.Panel.existById("custom-panel") Copy
// return true if panel id="layer" existsJMap.Application.Panel.existById("custom-panel")
JMap.Application.Panel.existById
Returns true if the panel exists for a given panel id.