新版D3如何获取节点？

Question

The D3 examples I've seen use an old version of D3 with tree.nodes(root).reverse() to retrieve nodes array. It does not work with the latest version of D3. How do I get nodes array in the new version?

Answer 1

Create a tree layout object:

const layout = d3.tree();

Build a root object from your data:

const root = d3.hierarchy(data, d => d.children);

Extract nodes from the tree:

const tree = layout(root);
const nodes = tree.descendants();

Should work for D3 V7 (see a working example here )