A progressive enhancement to select multiple form elements using jQuery that makes it much easier to use. This enhancement automatically hides the original select multiple, and instead presents a regular select showing the available options, and an HTML list showing the already-selected options. While hidden, the original select multiple is updated as the user makes changes.
No Ctrl/Cmd-Clicking is necessary to select multiple items, and an accidental click is not destructive. You add or remove items one at a time. Only the already-selected items occupy screen real estate, as they should. A remove link is included with each selected item, which eliminates ambiguity. Viewing and choosing a new item to add requires clicking on the select. This action is inherently more familiar, and displays many more available options at once, than a select multiple. More is seen at a glance and less scrolling (if any) is required to see all available options.Optionally, this type of select is sortable, giving it hierarchy. The user can drag and drop the items to the desired order.