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编程和 jquery 的新手。我有一个看起来很简单的问题,但我无法弄清楚。如果您能提供帮助,将不胜感激

如何向可放置对象添加值,以便在将对象放入可放置区域时注册其分配的值?它还需要添加多个对象。

例如对象 1 = 10、对象 2 = 25 等。当对象被放下时,计数器会显示该值。

所以对象 1 会在掉落时记录 10,如果对象 2 也被掉落,计数器将记录并显示 35 添加两个对象等。

谢谢

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3 回答 3

1

您可以在可拖动项目上使用数据属性data-drag-value,然后在放置事件中检索它。

HTML:

<div style="float:left">
    <ul id="myDragList">
        <li data-drag-value="1">One</li>
        <li data-drag-value="2">Two</li>
        <li data-drag-value="3">Three</li>
    </ul>
</div>
<div id="myDroppable">Drop here
    <div id="info"></div>
</div>

JavaScript:

$(document).ready(function () {
    $("#myDragList li").draggable();
    $("#myDroppable").droppable({
        drop: function (event, ui) {
            dragValue = ui.draggable.attr("data-drag-value");
            $("#info").html("data-drag-value = " + dragValue);
        }
    });
});

看看我的 JSFiddle 示例:

http://jsfiddle.net/markwylde/Ga34x/

于 2013-08-23T12:40:28.160 回答
0

工作小提琴演示

尝试这个

将这些标签添加到您的头部标签中。

<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>

代码

$(function () {
    var drg;
    var a = 0;
    var cln;
    var i = 0;
    $(".ui-widget-content").draggable({ //div with the class'ui-widget-content' is set draggable
        drag: function (event, ui) {      
            drg = $(this);                // on drag gets which div is it
            $("#droppable").droppable('enable');  // enabling drop of droppable div 
        },
        helper: 'clone'          // this to get the clone copy of the div on drag         

    });

    $("#droppable").droppable({

        drop: function () {       

            a = a + parseInt(drg.attr('value'));   //get the value of the dropped div add to the total
            $("#counter").html(a);
            if ($("#" + drg.text()).length > 0) {   // if droppable div already contains the same div eg'toy', then only the number to be increased
                var txt = drg.text() + "1";
                $("#" + txt).html(parseInt($("#" + txt).text()) + 1);
            } else

            {             // else append the div to the droppable div
                $(this).append("<div id=" + drg.text() + " value=" + drg.attr('value') + ">" + drg.text() + "</div>");


                $(this).append("<div id='" + drg.text() + "1' style='float:right'>" + $("#" + drg.text()).length + "</div><br>");  // lenght of the div eg:' toy    1' ,where 1 is the length
            }
            $("#" + drg.text()).draggable({   // enable the div dropped eg:'toy' in the droppable div to be draggable
                drag: function (event, ui) {
                    $("#droppable").droppable('disable'); // on drag of it disable drop to the droppable div
                    drg = $(this);  //get which div is dragged

                },
                stop: function (event, ui) {   // on drag end or dropped
                    var tt = drg.text() + "1";
                    if (parseInt($("#" + tt).text()) > 1) {  //eg: if in case 'toy' length >1 ie 'toy    3'
                        $("#" + tt).html(parseInt($("#" + tt).text()) - 1); //reduce the length field by 1


                    } else {    // else remove the field out of droppable div

                        $("#" + drg.text()).remove();

                        $(this).remove();
                        $("#" + tt + " + br ").remove();
                        $("#" + tt).remove();

                    }
                    a = a - parseInt(drg.attr('value'));  // reduce the div value from total amount
                    $("#counter").html(a);

                },
                helper: 'clone'    

            });
        }

    });

});

html

<div class="ui-widget-content" value="30">toy</div>
<br>
<div class="ui-widget-content" value="20">pencil</div>
<br>
<div class="ui-widget-content" value="10">pen</div>
<div id="droppable" class="ui-widget-header"></div>
<div style="float:bottom">Total : $</div>
<div id="counter">0</div>

css

div {
    float: left;
}
#droppable {
    width: 150px;
    height: 150px;
    padding: 0.5em;
    float: left;
    margin: 10px;
    border:3px solid;
}

希望这会有所帮助,谢谢

于 2013-08-24T18:29:28.763 回答
0

更新了演示

尝试这个

首先将这些标签添加到您的头部标签中。

<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>

代码

       $(function () {
  var drg;
    var a=0;
    $(".ui-widget-content").draggable({
         drag: function (event, ui) {
            drg=$(this);
            }
    });
    $("#droppable").droppable({
       out        : function(){

            a= a-parseInt(drg.attr('value'));
            $("#counter").html(a);

        },
       drop  : function(){
       a= a+parseInt(drg.attr('value'));
       $("#counter").html(a);
    }
    });
});

HTML

<div class="ui-widget-content" value="30">
toy</div>
<br>
<div class="ui-widget-content" value="20">
pencil</div>
    <br>
<div  class="ui-widget-content" value="10">
pen</div>

<div id="droppable" class="ui-widget-header"></div>
<div id="counter"></div>
于 2013-08-23T12:52:47.607 回答