Hide or show node element with button onclick

@brianc wrote:

Hi all,

As the title stated above,

1. I have set the element’s visible to false:

        ...
        $(go.Panel, "Table", { name: "SCORE", visible: false },
         ...
        )
   

2. I have created show and hide buttons:

        $("Button",
          { row: 4, 
            margin: 2,
            click: function(e, node) { node.findObject("SCORE").visible = "true"; },
            maxSize: new go.Size(115, 28)
          },
          $(go.TextBlock, "Show Score")
        ), //end row 4
        $("Button",
          { row: 5, 
            margin: 2,
            click: function(e, node) { node.findObject("SCORE").visible = "false"; },
            maxSize: new go.Size(115, 28)
          },
          $(go.TextBlock, "Hide Score"))
   

but I got an error stating “Uncaught TypeError: Cannot set property ‘visible’ of null”. I have no idea how to solve the error. Please help.

Thank you.

Brian

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