Fixes phoenixframework/phoenix_live_view#3742. When a select contained an empty optgroup <select> <optgroup label="optgroupabove"> <option selected value="1">a</option> <option value="2">b</option> <option value="3">c</option> </optgroup> <optgroup label="optgroupempty"></optgroup> <optgroup label="optgroupbelow"> <option value="4">d</option> <option value="5">e</option> <option value="6">f</option> </optgroup> </select> morphdom would stop when encountering the empty optgroup, not patching the nodes below. This is fixed by skipping to the next sibling when an optgroup does not have any children.

Commits

Commits on Apr 10, 2025

handle empty optgroups