jQuery UI Sortable - Drop placeholder
- Item 1
- Item 2
- Item 3
- Item 4
- Item 5
- Item 6
- Item 7
When dragging a sortable item to a new location, other items will make room
for the that item by shifting to allow white space between them. Pass a
class into the placeholder
option to style that space to
be visible. Use the boolean forcePlaceholderSize
option
to set dimensions on the placeholder.