我在HTML页面中创建了三个div元素，这三个div元素中的每一个都包含一个文本框，即其中的输入元素。一个div成为源，而另外两个成为目标。 HTML页面有一个按钮名称切换。
源div与目标div之一之间的初始连接是在拖放的帮助下创建的。单击切换时，它将删除源和目标之间的连接，并将在源和另一个目标之间创建新连接。现在，在此方案中使用Google Chrome开发人员工具执行分析时，每个切换的div元素数量会继续增加2。
<!DOCTYPE html>
<html>
<head>
<title>
jsplumb_demo
</title>
<script src="./dist/libs/jquery.js"></script>
<script src="./src/jquery-ui.min.js"></script>
<script src="./src/jquery.jsPlumb-1.7.6-min.js"></script>
<script>
var connection12 = undefined, connection13 = undefined;
jsPlumb.ready(function() {
var exampleGreyEndpointOptions = {
endpoint:"Rectangle",
paintStyle:{ width:10, height:10, fillStyle:'#666' },
isSource:true,
connectorStyle : { strokeStyle:"#666" },
isTarget:true,
container:$('#container'),
connector : "Straight",
deleteEndpointsOnDetach: true
};
jsPlumb.makeSource($('div.source'), exampleGreyEndpointOptions);
jsPlumb.makeTarget($('div.target'),exampleGreyEndpointOptions);
jsPlumb.makeTarget($('div.target1'),exampleGreyEndpointOptions);
init = function(connection){
};
connectionDelete = function(){
if(connection12 !== undefined){
jsPlumb.detach(connection12);
jsPlumb.unmakeTarget($('div.target'));
connection13 = jsPlumb.connect({source : $('#source'), target : $('#target1')},exampleGreyEndpointOptions);
connection12 = undefined;
}
else{
jsPlumb.detach(connection13);
jsPlumb.unmakeTarget($('div.target'));
connection12 = jsPlumb.connect({source : $('#source'), target : $('#target')},exampleGreyEndpointOptions);
connection13 = undefined;
}
};
});
jsPlumb.doWhileSuspended(function(){
jsPlumb.bind("connection", function(connInfo, originalEvent) {
init(connInfo.connection);
//alert("Source div id = " + connInfo.sourceId + " Target div id = " + connInfo.targetId);
var input = "input#" +connInfo.sourceId;
var inputval = $(input).val();
var output = "input#" +connInfo.targetId;
$(output).val(inputval + " from " + connInfo.sourceId);
connInfo.targetId ==='target'?connection12 = connInfo : connection13 = connInfo;
});
jsPlumb.bind("click", function(conn, originalEvent) {
if (confirm("Delete connection from " + conn.sourceId + " to " + conn.targetId + "?"))
jsPlumb.detach(conn);
});
jsPlumb.bind("connectionDrag", function(connection) {
// alert("connection " + connection.id + " is being dragged. suspendedElement is ", connection.suspendedElement, " of type ", connection.suspendedElementType);
});
jsPlumb.bind("connectionDragStop", function(connection) {
// alert("connection " + connection.id + " was dragged");
});
jsPlumb.bind("connectionMoved", function(params) {
//alert("connection " + params.connection.id + " was moved");
});
});
</script>
</head>
<body>
<div id="container">
<div class="source" id="source" style="position: absolute;left: 200px" >
<input/>
</div>
<div class="target" id="target" style="position: absolute;left: 600px" >
<input />
</div>
<div class="target1" id="target1" style="position: absolute;left: 600px; top:200px" >
<input />
</div>
</div>
<button name="delete" type="button" onclick="connectionDelete()">Toggle</button>
</body>
</html>
编辑： -