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in Technique[技术] by (71.8m points)

为什么jsplumb线条不能出来?

    var firstInstance = jsPlumb.getInstance({                        
        DragOptions : {cursor : 'pointer',zIndex : 2000},
        ConnectionOverlays : [ "PlainArrow", {
            location : 1,
            width : 8,
            length : 8
        }]
    });
    var imgArray = $("img[name='Hardware']");//所有图片的数组
    var ID = $(imgArray[imgArray.length-1]).attr("id");//只取最后一张图片
    if(ID == "Img_1"){
        return; 
    }else{
        var pointA = firstInstance.addEndpoint(Img_1,sourceEndpoint);
        var pointB = firstInstance.addEndpoint(ID,{anchor:"Top"},targetEndpoint);
        return;                    
    }
    firstInstance.connect({
        source:pointA, 
        target:pointB,
        connector : g_connector
    })

执行else后面的语句后,结果只是在两个图片上分别出来两个端点,线条没有出现,这是什么原因?最底下那句firstInstance.connect({ source:pointA, target:pointB, connector : g_connector})代码没有被执行,什么原因?求指教,谢谢!


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