如何在jsPlumb中找到未连接的端点？

Question

在我的应用中，我在一个模块中使用jsPlumb lib，有没有办法找出未连接的端点？

Answer 1

由于API Document中没有函数来获取所有端点，因此您需要获取具有端点的所有元素并检查其端点是否具有连接：

var elem = $('.havingEndpoint'); // get elements having endpoint based on its class
var emptypoints=[],k=0;          //consists of all empty endpoint objects which can be used to manipulate them
for(var i=0;i<elem.length;i++)   // for all elements having endpoints iterate
{
     var eps=jsPlumb.getEndpoints($(elem[i]));  //get all endpoints of element
     for(var j=0;j<eps.length;j++)
     {
          if(eps[j].connections.length==0)    // check no. of connections
               emptypoints[k++]=eps[j];       //if true add to emptypoints array
     }
 }
 console.log("no. of empty points: "+ k);