Getting the container can return undefined (if the element is an <option> without a valid parent), however the algorithm here assumes that it always returns a node which can have events fired on. For example:
Scroll into view the element’s container.
Let parent node be the element’s container.
Fire a mouseOver event at parent node.
Maybe this issue does not come up in practice, but it feels like it should be handled somehow.
Getting the container can return
undefined(if the element is an<option>without a valid parent), however the algorithm here assumes that it always returns a node which can have events fired on. For example:Maybe this issue does not come up in practice, but it feels like it should be handled somehow.