为什么我的TreeExpanderButton不能正常工作

GoJS
1

现在，我想测试一下TreeExpanderButton的功能，但是现在它报错了，这是怎么回事呢

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2

真的很对不起，是我粗心大意了，我改写了$,却在下面代码中没有改过来

3

OK, so you fixed your code not to use jQuery. What’s the problem now?

You need to make sure your node template is correct. Why is the Node a “Vertical” Panel with only one object in it? Where is the “BODY” object that you refer to? Why does the Panel have only the “TreeExpanderButton” in it – do you really want to clip the button?