rrow", { width:10, length:20, location:1, id:"arrow" } ],
            ["Custom", {
                create:function(component) {
                    return $('<span style="background:#fff;position:relative;z-index:999;cursor:pointer;"></span>');
                },
                location:0.5,
                id:"customOverlay"
            }]
        ]
    };

    function open_json(json) {
        var jsplumb_json=JSON.parse(json);
        //添加div 数据
        console.info(json);
        for(var i=0;i