如何使div可拖动和可拖放

Question

One thing left in my project was to make the two divs draggable and droppable simultaneously. Now I have the working code of divs that can be dragged and dropped but for example I can drag a div from target area and drop it on users area but I cant seem to figure out a way to drag those divs from users and assign to different users.

$(document).ready(function(){
    $(".dragable").draggable({
        cancel: "a.ui-icon",
        revert: true,
        helper: "clone",
        cursor: "move",
        revertDuration: 0
    });

    $('.droppable').droppable({
        accept: ".dragable",
        activeClass: "ui-state-highlight",
        drop: function( event, ui ) {
            // clone item to retain in original "list"
            var $item = ui.draggable.clone();
            $(this).addClass('has-drop').append($item);
        }
    });
});

http://jsfiddle.net/coder880/TpbZk/31/

Answer 1

The issue is because once the item is dragged/dropped it is then cloned. This clone does not have the draggable() plugin instantiated on it. You need to call draggable() on the $item again. Try this:

var draggableOptions = {
    cancel: "a.ui-icon",
    revert: true,
    helper: "clone",
    cursor: "move",
    revertDuration: 0
}

$(".dragable").draggable(draggableOptions);

$('.droppable').droppable({
    accept: ".dragable",
    activeClass: "ui-state-highlight",
    drop: function(event, ui) {
        var $item = ui.draggable.clone();
        $item.draggable(draggableOptions);
        $(this).addClass('has-drop').append($item);
    }
});

Updated fiddle

it should only be cloned when its from target otherwise it should move it.

To achieve this you need to remove the helper: 'clone' option in the cloned draggable element and maintain a flag on the element to determine whether it is a brand new clone or has been dragged previously and moved again. To do this you could use a class, something like this:

$(".dragable").draggable({
    cancel: "a.ui-icon",
    revert: true,
    helper: "clone",
    cursor: "move",
    revertDuration: 0
});

$('.droppable').droppable({
    accept: ".dragable",
    activeClass: "ui-state-highlight",
    drop: function(event, ui) {
        var $item = $(ui.draggable)
        if (!$item.hasClass('clone')) {
            $item = $item.clone().addClass('clone');
            $item.draggable({
                cancel: "a.ui-icon",
                revert: true,
                cursor: "move",
                revertDuration: 0
            });
        }
        $(this).addClass('has-drop').append($item);
    }
});

Example fiddle