javascript - 使用 jquery Draggable/droppable 设置放置变量

Question

我正在研究利用 jquery ui 可拖/可放的概念验证。

我正在寻找一种方法来将变量设置为等于放入可放置区域的 div 的索引。 (假设我有名为“div0”、“div1”、“div2”等的 div...)

想象一下代码看起来像这样:

<div id="div0" class="draggableDiv">some cotent</div>
<div id="div1" class="draggableDiv">more content</div>
<div id="div2" class="draggableDiv">yet more content</div>

<div class="droppableDiv">drop it here</div>

$(document).ready(function() {
    $('.draggableDiv').draggable({helper: 'clone'});
    $('.droppableDiv').droppable({
        accept: '.draggableRecipe',
        drop: function(ev, ui) { 
            ui.draggable.clone().fadeOut("fast", 
            function() { 
                $(this).fadeIn("fast") 
            }).appendTo($(this).empty());
                        // function to set someVar = div[index];
        }
    });
});

我不确定如何最好地实现这一点，因此如果有人有任何建议，我将不胜感激。

谢谢!

Answer 1

<div id="div0" class="draggableDiv">some cotent</div>
<div id="div1" class="draggableDiv">more content</div>
<div id="div2" class="draggableDiv">yet more content</div>

<div id='dropplace' class="droppableDiv">drop it here</div>

<script language='javascript'>

$(document).ready(function() {
    $('.draggableDiv').draggable({helper: 'clone'});
    $('.droppableDiv').droppable({
        accept: '.draggableDiv', //changed this, it was originally 'draggableRecipe'
        drop: function(ev, ui) { 

                //get the index of dropped draggable div
                var divIndex = $('div').index(ui.draggable)
                alert(divIndex) //alert the divIndex to see the result

                ui.draggable.clone().fadeOut("fast", 
                function() { 
                        $(this).fadeIn("fast") 
                }).appendTo($(this).empty());
        }
    });
});
</script>

测试了这个，它对我有用，希望也对你有用。祝你好运