Use go.js to make a topology tree with drag-and-drop function. Do anyone have any examples to share? thank you very much.

use go.js to create a topology tree with drag-and-drop function. Does anyone have any examples to share? thank you very much.
the main requirements are in the figure, because you haven"t used go.js at all.

Apr.20,2021

documents are all in English, the description is not very detailed, and it looks tiring. Use d3


to replace jtopo;
with jtopo;
, and also achieve the desired function.

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