Function getDisplayedForm

getDisplayedForm(): JForm
JMap.Form.getDisplayedForm

Returns the currently displayed form.

Use JMap.Form.hasDisplayedForm to know if a form is currently displayed.

Returns JForm
Throws
if no layer is displayed

Example
```
if (JMap.Form.hasDisplayedForm()) {
 // returns the currently displayed form
 const form = JMap.Form.getDisplayedForm()
 ...
}
```