1、连接：

jsPlumb.bind("connection", function (connInfo, originalEvent) {     
            if (connInfo.connection.sourceId == connInfo.connection.targetId) {      
                jsPlumb.detach(connInfo);      
                alert("不能连接自己！");      
            }else{      
               alert("连接"+connInfo.connection.sourceId+"==="+connInfo.connection.targetId);      
            }      
        });

2、连接取消

jsPlumb.bind("connectionDetached", function (conn, originalEvent) {     
            if (conn.sourceId == conn.targetId) {      
                //自己连接自己时会自动取消连接      
            }else{      
                    alert("删除连接从" + conn.sourceId + "到" + conn.targetId + "！");      
            }      
        });

3、点击

jsPlumb.bind("click", function (conn, originalEvent) {     
            if (confirm("Delete connection from " + conn.sourceId + " to " + conn.targetId + "?"))      
                jsPlumb.detach(conn);      
        });

4、删除

jsPlumb.removeAllEndpoints("window");