Returns the node at the end of the stack of open elements, if one exists. If the stack is empty, returns null.
Source
* Sets a push handler that will be called when an item is pushed onto the stack of
* open elements.
*
* The function will be called with the pushed item as its argument.
*
Changelog
| Version | Description |
|---|---|
| 6.4.0 | Introduced. |
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