jquery - jquery在拖出时从droppable中删除

Question

我已经基于示例购物车演示实现了 jQuery 的可拖动和可放置。<li>当您将其拖出可放置对象时，我希望能够将其从可放置对象中删除。我认为这可能与droppable out 事件有关，但 ui 参数为空。有谁知道解决方案？

Answer 1

这是一个完整的工作解决方案，没有经过完整的测试，你仍然应该调试它：{reassign draggable to dropped element to fired drop out event} {you should reassign droppable too!}

看演示

可编辑的演示

$(function () {
    $("#catalog").accordion();
    $("#catalog li").draggable({
        appendTo: "body",
        helper: "clone"
    });
    $("#cart ol").droppable({
        out: function (event, ui) {
            var self = ui;
            ui.helper.off('mouseup').on('mouseup', function () {
                $(this).remove();
                self.draggable.remove();
            });
        },
        activeClass: "ui-state-default",
        hoverClass: "ui-state-hover",
        accept: ":not(.ui-sortable-helper)",
        drop: function (event, ui) {
            if (ui.draggable.is('.dropped')) return false;
            $(this).find(".placeholder").remove();
            $("<li></li>").text(ui.draggable.text()).appendTo(this).draggable({
                appendTo: "body",
                helper: "clone"
            }).addClass('dropped');
        }
    }).sortable({
        items: "li:not(.placeholder)",
        sort: function () {
            // gets added unintentionally by droppable interacting with sortable
            // using connectWithSortable fixes this, but doesn't allow you to customize active/hoverClass options
            $(this).removeClass("ui-state-default");
        }
    });


});

Answer 2

您可以使用 CSS 更改列表样式。像这样的东西应该工作：

.ui-droppable .ui-sortable ol { list-style: none outside none; }

或者更好

#cart ol { list-style: none outside none; }

希望这可以帮助！

Answer 3

A.Wolff 的解决方案让我走上了正轨，但是通过 Drew 的解决方案使用了 sortable.out 函数，来自这篇文章： 如何删除从列表中拉出的项目？ 是一个更好的解决方案

$(function () {
    var removeIntent = false;
    
    $("#catalog").accordion();
    $("#catalog li").draggable({
        appendTo: "body",
        helper: "clone"
    });
    $("#cart ol").droppable({
        activeClass: "ui-state-default",
        hoverClass: "ui-state-hover",
        accept: ":not(.ui-sortable-helper)",
        drop: function (event, ui) {
            $(this).find(".placeholder").remove();
            $("<li></li>").text(ui.draggable.text()).appendTo(this);
        }
    }).sortable({
        items: "li:not(.placeholder)",
        sort: function () {
            // gets added unintentionally by droppable interacting with sortable
            // using connectWithSortable fixes this, but doesn't allow you to customize active/hoverClass options
            $(this).removeClass("ui-state-default");
        },
        over: function () {
            removeIntent = false;
        },
        out: function () {
            removeIntent = true;
        },
        beforeStop: function (event, ui) {
            if(removeIntent == true){
                ui.item.remove();   
            }
        }
    });


});