Create a list where elements are selectable, like in file-managers.

• A click on a list element selects only that element (adds the class .selected), deselects all others.
• If a click is made with Ctrl (Cmd for Mac), then the selection is toggled on the element, but other elements are not modified.

The demo:

P.S. For this task we can assume that list items are text-only. No nested tags.

P.P.S. Prevent the native browser selection of the text on clicks.

Open a sandbox for the task.