Mixed ng.Sortable.get_pre_element (HTML_Element elm) vs. 1.2.2 Full+Lite

Get the previous HTML Element with the same depth of the passed HTML Element.

Parameters

HTML_Element elm Required vs. 1.2.2 Full+Lite
The HTML Element to look before.

Return

Mixed Required vs. 1.2.2 Full+Lite
This function will return the previous HTML Element with the same depth or null if none is found.