Returns the current item.
The getCurrentItem() function returns an object whose key:value pairs
are the field IDs and field values of the current item, including all
hidden fields. Fields that do not have a value are omitted from the
returned object.
When called on a write-only or read & write dataset,
getCurrentItem() returns the unsaved state of the current item.
Returns null or undefined if the dataset:
Note:
A dataset needs to load its data before you call its getCurrentItem() function.
Usually a dataset finishes loading a short time after the page it is on finishes
loading. So if you call getCurrentItem() inside the page’s onReady()
event handler, the dataset might not be ready yet.
To call getCurrentItem() as soon as possible after a page loads, use the dataset's
onReady() function inside the page’s onReady()
event handler to ensure that both the page and the dataset have finished loading.
If the current item is changed from a non-dataset source, such as by
selecting a row in a table connected to a dataset or clicking a button set
to advance to the next item in a dataset, the dataset's current item is
not updated immediately. Therefore, to get the dataset's new current item,
call getCurrentItem() in the dataset's onCurrentIndexChanged()
event handler. Do not use the events of the non-dataset source, such as
onRowSelect or onClick,
to call getCurrentItem() because they will fire before the dataset's
current item is updated.