使用JSPlumb,我希望能够将元素拖到一个组中,在组中使用它们,然后再将它们拖出组.我的代码正确地创建了一个组,我可以将项目拖入其中,正确移动组,但项目保留在组内,我不能再将它拖出来…任何想法? 
  
 
(1)DIV设置
<div id="flowchartBox"> <div id="group1" class="groupBox" style="top:10px; left:300px"></div> <br/> <div id="shape1" class="shape" style="top:10px; left:5px"></div> <div id="shape2" class="shape" style="top:10px; left:80px"></div> <div id="shape3" class="shape" style="top:200px; left:80px"></div> </div>
(2)JSPlumb的Javascript:
jsPlumb.ready(function() {
   jsPlumb.draggable($(".shape"),{containment:"parent"});
   jsPlumb.addGroup({
     el:group1,id:"g1",droppable:true,// constrain: false,//revert: false
     orphan: true
     //prune:true
    });
    }); 
 从注释代码中可以看出,我已经尝试过从the jsplumb community docs开始的其他选项,应该有所帮助,但它们似乎并不…
解决方法
 我怀疑问题是你需要为JSPlumb设置一个 
 container来检测一个项目是否已被删除到其组之外. 
  
 
        也许与这个演示进行比较将有助于诊断问题(全屏运行付出代价).
每次添加或删除项目时,代码都会在浏览器的控制台中记录,以及组中剩余项目的计数.
jsPlumb.setContainer($("body"));
jsPlumb.ready(function() {
  jsPlumb.draggable($(".shape"));
  jsPlumb.addGroup({
    el: group1,id: "g1",//droppable: true,//constrain: false,//revert: false
    orphan: true,//prune:true
  });
});
jsPlumb.bind("group:addMember",function(p) {
  var grp = jsPlumb.getGroup("g1");
  console.log("Group",p.group.id,"added",p.el.id,"for a total of",grp.getMembers().length,"members.");
});
jsPlumb.bind("group:removeMember","removed","members.");
}); 
 #group1 {
  background-color: gold;
  height: 100px;
}
.shape {
  text-align: center;
  position: absolute;
  background-color: whitesmoke;
  width: 50px;
  height: 50px;
  padding: 0.5em;
  float: left;
  margin: 10px 10px 10px 0;
} 
 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script> <script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.9.2/jquery-ui.min.js"></script> <script src="https://jsplumbtoolkit.com/lib/jsplumb.min.js"></script> <div id="flowchartBox"> <div id="group1" class="groupBox">Group Box 1</div> <div id="shape1" class="shape" style="top:110px; left:20px">Shape 1</div> <div id="shape2" class="shape" style="top:110px; left:100px">Shape 2</div> <div id="shape3" class="shape" style="top:110px; left:180px">Shape 3</div> </div>