javascript - 进入/退出未正确清理强制布局中弹出的节点/链接-6ren

javascript - 进入/退出未正确清理强制布局中弹出的节点/链接

转载作者：行者123 更新时间：2023-11-30 20:13:55

我尝试将有向无环图绘制为力布局。

但是我注意到，尽管为每个组元素灌输了进入/退出条件，弹出的节点/链接并没有从 DOM 中删除它们自己。

相反，弹出的节点/链接在力布局中卡住；这意味着没有调用进入/退出条件来删除弹出的节点/链接。

我将代码隔离到一个 jsfiddle 和堆栈片段中，它将在 3 秒后从数据中添加和删除新节点/链接以展示问题:

http://jsfiddle.net/dLucxt50/

const nodes = [{
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}, {
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}, {
  "source": "a3817823b2c12239b034a76f7e1208556ea37833b1b0831e0659ba21c6ecc55e",
  "target": "2708216706f72320514ebddab7551eed03a6622d4a0067024c36940e353a7543"
}, {
  "source": "9424fd648818135e04522b22346223fa54eafa437f54def180999e3deb7405a9",
  "target": "2708216706f72320514ebddab7551eed03a6622d4a0067024c36940e353a7543"
}, {
  "source": "a3817823b2c12239b034a76f7e1208556ea37833b1b0831e0659ba21c6ecc55e",
  "target": "58b7882b4fa254f0115e88268cec08bc4327dab1d835b28b23c5748310f7f862"
}, {
  "source": "2708216706f72320514ebddab7551eed03a6622d4a0067024c36940e353a7543",
  "target": "58b7882b4fa254f0115e88268cec08bc4327dab1d835b28b23c5748310f7f862"
}, {
  "source": "a3817823b2c12239b034a76f7e1208556ea37833b1b0831e0659ba21c6ecc55e",
  "target": "8dfcba1e98ca33746325f1c142851966defb2bdf2625f7ee45747ef0c84e218d"
}, {
  "source": "58b7882b4fa254f0115e88268cec08bc4327dab1d835b28b23c5748310f7f862",
  "target": "8dfcba1e98ca33746325f1c142851966defb2bdf2625f7ee45747ef0c84e218d"
}, {
  "source": "a3817823b2c12239b034a76f7e1208556ea37833b1b0831e0659ba21c6ecc55e",
  "target": "8a5d0543fe251def509c196562ecb036f4ff085e484b733298b5db5acc3f55e9"
}, {
  "source": "8dfcba1e98ca33746325f1c142851966defb2bdf2625f7ee45747ef0c84e218d",
  "target": "8a5d0543fe251def509c196562ecb036f4ff085e484b733298b5db5acc3f55e9"
}, {
  "source": "a3817823b2c12239b034a76f7e1208556ea37833b1b0831e0659ba21c6ecc55e",
  "target": "2aca0723448fdff7a6471bf18f83ff9bd1752dd9e1713c2e294bdc4e19e28e6b"
}, {
  "source": "8a5d0543fe251def509c196562ecb036f4ff085e484b733298b5db5acc3f55e9",
  "target": "2aca0723448fdff7a6471bf18f83ff9bd1752dd9e1713c2e294bdc4e19e28e6b"
}, {
  "source": "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
  "target": "29cd946900b47644a9237c886fcbf874c1a30e0f56a2d578ee65e9dc7cd697e6"
}, {
  "source": "2aca0723448fdff7a6471bf18f83ff9bd1752dd9e1713c2e294bdc4e19e28e6b",
  "target": "29cd946900b47644a9237c886fcbf874c1a30e0f56a2d578ee65e9dc7cd697e6"
}, {
  "source": "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
  "target": "8bd0e2628ff9047b1a41b5954ff68e9db5d3acb122cb9498d1c0066ad31c4ae6"
}, {
  "source": "29cd946900b47644a9237c886fcbf874c1a30e0f56a2d578ee65e9dc7cd697e6",
  "target": "8bd0e2628ff9047b1a41b5954ff68e9db5d3acb122cb9498d1c0066ad31c4ae6"
}, {
  "source": "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
  "target": "17a34ac7de73cecd0a4e2dcefc97f8cd418c10d6aa1f0311b8c3f833b618d941"
}, {
  "source": "8bd0e2628ff9047b1a41b5954ff68e9db5d3acb122cb9498d1c0066ad31c4ae6",
  "target": "17a34ac7de73cecd0a4e2dcefc97f8cd418c10d6aa1f0311b8c3f833b618d941"
}, {
  "source": "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
  "target": "5dd24f315aeae358e4bcd6d17313929093550ac3e08c719485ce13e5c1a2c812"
}, {
  "source": "17a34ac7de73cecd0a4e2dcefc97f8cd418c10d6aa1f0311b8c3f833b618d941",
  "target": "5dd24f315aeae358e4bcd6d17313929093550ac3e08c719485ce13e5c1a2c812"
}, {
  "source": "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
  "target": "3958fe2700d4af2498094b2039d98b6ecc409c4196e322146910498d0b9c3ebe"
}, {
  "source": "5dd24f315aeae358e4bcd6d17313929093550ac3e08c719485ce13e5c1a2c812",
  "target": "3958fe2700d4af2498094b2039d98b6ecc409c4196e322146910498d0b9c3ebe"
}, {
  "source": "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
  "target": "520434ed7d42d6d732560288bfe21eb1f37db1bb176450d3f5a6d6ec32658cd5"
}, {
  "source": "3958fe2700d4af2498094b2039d98b6ecc409c4196e322146910498d0b9c3ebe",
  "target": "520434ed7d42d6d732560288bfe21eb1f37db1bb176450d3f5a6d6ec32658cd5"
}, {
  "source": "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
  "target": "91aae88c7358780cec9062d8bc200d59c29dca107dfd96862a68c86113a373a1"
}, {
  "source": "520434ed7d42d6d732560288bfe21eb1f37db1bb176450d3f5a6d6ec32658cd5",
  "target": "91aae88c7358780cec9062d8bc200d59c29dca107dfd96862a68c86113a373a1"
}, {
  "source": "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
  "target": "ac0c2ecdc6e53e55387df48d7b3457f5792392bcb7bfea0a56d096de19359a28"
}, {
  "source": "91aae88c7358780cec9062d8bc200d59c29dca107dfd96862a68c86113a373a1",
  "target": "ac0c2ecdc6e53e55387df48d7b3457f5792392bcb7bfea0a56d096de19359a28"
}, {
  "source": "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
  "target": "395aedb5ec6942b615ded5ad5b3aa538bed94a6479ed5c685d503b552e364043"
}, {
  "source": "ac0c2ecdc6e53e55387df48d7b3457f5792392bcb7bfea0a56d096de19359a28",
  "target": "395aedb5ec6942b615ded5ad5b3aa538bed94a6479ed5c685d503b552e364043"
}, {
  "source": "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
  "target": "37603e4d6de3c9b914c839bb5b90d4b5254e6e0f53d5587793c4ddec71de5775"
}, {
  "source": "395aedb5ec6942b615ded5ad5b3aa538bed94a6479ed5c685d503b552e364043",
  "target": "37603e4d6de3c9b914c839bb5b90d4b5254e6e0f53d5587793c4ddec71de5775"
}]

const svg = d3.select("#graph")
  .call(d3.zoom().on("zoom", () => networkGraph.attr("transform", d3.event.transform)));

const networkGraph = svg.append("g");

const width = 1000;
const height = 500;

const simulation = d3.forceSimulation(this.nodes)
  .force("link", d3.forceLink(this.links).id((d) => d.id).distance(50).strength(1))
  .force("collide", d3.forceCollide(4.5).iterations(4.5))
  .force("center", d3.forceCenter(width / 2, height / 2))
  .force("charge", d3.forceManyBody().strength(-120))
  .force("gravity", d3.forceManyBody().strength(30))
  .force("x", d3.forceX())
  .force("y", d3.forceY())
  .alphaTarget(1);

const drag = () => {
  const dragStarted = (d) => {
    if (!d3.event.active) {
      simulation.alphaTarget(0.3).restart();
    }
    d.fx = d.x;
    d.fy = d.y;
  }

  const dragged = (d) => {
    d.fx = d3.event.x;
    d.fy = d3.event.y;
  }

  const dragEnded = (d) => {
    if (!d3.event.active) {
      simulation.alphaTarget(0);
    }
    d.fx = null;
    d.fy = null;
  };

  return d3.drag()
    .on("start", dragStarted)
    .on("drag", dragged)
    .on("end", dragEnded);
}

let link = networkGraph.append("g").selectAll(".link");
let node = networkGraph.append("g").selectAll(".node");

const update = () => {
  // Spawn vertices.
  node = node.data(nodes, (d) => d.id);
  node.exit().remove();

  const newNodes = node.enter();
  const newNodesGroup = newNodes
    .append("g")
    .attr("class", "node");

  newNodesGroup.append("text")
  newNodesGroup.append("circle");

  // @ts-ignore
  node = newNodes.merge(node);

  const circle = node.selectAll("circle")
    .attr("r", 4.5)
    .call(drag());
  const label = node.selectAll("text")
    .attr("dy", "0.35em")
    .text((d) => d.id);

  // Spawn edges.
  link = link.data(links, (d) => `${d.source} ${d.target}`);
  link.exit().remove();
  link = link.enter()
    .append("line")
    .attr("class", "link")
    .merge(link);

  simulation.on("tick", () => {
    link
      .attr("x1", (d) => d.source.x)
      .attr("y1", (d) => d.source.y)
      .attr("x2", (d) => d.target.x)
      .attr("y2", (d) => d.target.y);

    circle
      .attr("cx", (d) => d.x)
      .attr("cy", (d) => d.y);

    label
      .attr("x", (d) => d.x + 8)
      .attr("y", (d) => d.y);
  });

  simulation.nodes(nodes);
  simulation.force("link").links(links);
  simulation.alpha(1).restart();
}

update();

const pop = () => {
  let popped = nodes.shift();
  links = links.filter(l => l.source !== popped.id && l.target !== popped.id);
}

setTimeout(() => {
  pop();

  nodes.push({
    id: "29cd946900b47644a9237c886fcbf874c1a30e0f56a2d578ee65e9dc7cd697e6"
  })
  links.push({
    source: "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
    target: "29cd946900b47644a9237c886fcbf874c1a30e0f56a2d578ee65e9dc7cd697e6"
  })
  links.push({
    source: "2aca0723448fdff7a6471bf18f83ff9bd1752dd9e1713c2e294bdc4e19e28e6b",
    target: "29cd946900b47644a9237c886fcbf874c1a30e0f56a2d578ee65e9dc7cd697e6"
  })

  pop();

  nodes.push({
    id: "8bd0e2628ff9047b1a41b5954ff68e9db5d3acb122cb9498d1c0066ad31c4ae6"
  })
  links.push({
    source: "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
    target: "8bd0e2628ff9047b1a41b5954ff68e9db5d3acb122cb9498d1c0066ad31c4ae6"
  })
  links.push({
    source: "29cd946900b47644a9237c886fcbf874c1a30e0f56a2d578ee65e9dc7cd697e6",
    target: "8bd0e2628ff9047b1a41b5954ff68e9db5d3acb122cb9498d1c0066ad31c4ae6"
  })

  pop();

  nodes.push({
    id: "17a34ac7de73cecd0a4e2dcefc97f8cd418c10d6aa1f0311b8c3f833b618d941"
  })
  links.push({
    source: "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
    target: "17a34ac7de73cecd0a4e2dcefc97f8cd418c10d6aa1f0311b8c3f833b618d941"
  })
  links.push({
    source: "8bd0e2628ff9047b1a41b5954ff68e9db5d3acb122cb9498d1c0066ad31c4ae6",
    target: "17a34ac7de73cecd0a4e2dcefc97f8cd418c10d6aa1f0311b8c3f833b618d941"
  })

  pop();

  nodes.push({
    id: "5dd24f315aeae358e4bcd6d17313929093550ac3e08c719485ce13e5c1a2c812"
  })
  links.push({
    source: "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
    target: "5dd24f315aeae358e4bcd6d17313929093550ac3e08c719485ce13e5c1a2c812"
  })
  links.push({
    source: "17a34ac7de73cecd0a4e2dcefc97f8cd418c10d6aa1f0311b8c3f833b618d941",
    target: "5dd24f315aeae358e4bcd6d17313929093550ac3e08c719485ce13e5c1a2c812"
  })

  pop();

  nodes.push({
    id: "3958fe2700d4af2498094b2039d98b6ecc409c4196e322146910498d0b9c3ebe"
  })
  links.push({
    source: "78a93552bf3eb4239fc984a7baaeba7315b7208223516799d173f1fdf0519bf4",
    target: "3958fe2700d4af2498094b2039d98b6ecc409c4196e322146910498d0b9c3ebe"
  })
  links.push({
    source: "5dd24f315aeae358e4bcd6d17313929093550ac3e08c719485ce13e5c1a2c812",
    target: "3958fe2700d4af2498094b2039d98b6ecc409c4196e322146910498d0b9c3ebe"
  })

  update();
}, 3000);

body {
  background-color: #30404d;
}

svg {
  border-radius: 3px;
  box-shadow: inset 0 0 0 1px rgba(16, 22, 26, 0.4);
  background: rgba(16, 22, 26, 0.3);
  color: #f5f8fa;
}

.link {
  stroke: #777;
  stroke-opacity: 0.3;
  stroke-width: 1.5px;
}

.node circle {
  fill: #ccc;
  stroke: #000;
  stroke-width: 1.5px;
}

.node text {
  display: none;
  font: 10px monospace;
  fill: white;
}

.node:hover circle {
  fill: #000;
}

.node:hover text {
  display: inline;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.13.0/d3.min.js"></script>
<body>
  <svg id="graph" style="width: 1000px; height: 500px;"> </div>
</body>

最佳答案

两期，节点和链接各一期。

对于节点，您需要将输入的 g(由 .enter().append("g") 返回)元素合并到选择中，而不是占位符 (由 .enter() 返回)。否则，您在 node 中选择了占位符，退出它们将不会执行任何操作。

对于链接来说，它更有趣一点。

强制布局会改变数据的结构，对于数据数组项获得的节点，如果它们还没有，x,y,vx、vy 和 index 属性。

对于链接，链接 source 和 target 属性成为对节点数据数组中特定节点/项目的引用，而不是指定 id 的字符串。这就是为什么我们可以使用:

link
  .attr("x1", (d) => d.source.x)
  .attr("y1", (d) => d.source.y)
  .attr("x2", (d) => d.target.x)
  .attr("y2", (d) => d.target.y);

但是，同时这意味着我们不能使用:

links = links.filter(l => l.source !== popped.id && l.target !== popped.id);

一旦我们初始化链接，l.source 和 l.target 将不是与 popped.id 相当的字符串，相反，我们可以使用l.source.id 和l.target.id。

这是一个 updated fiddle

还有一个片段(修改了 id 以使其更适合):

const nodes=[{"id":"a"},{"id":"b"},{"id":"c"},{"id":"d"},{"id":"e"},{"id":"f"},{"id":"g"},{"id":"h"},{"id":"i"},{"id":"j"},{"id":"k"},{"id":"l"},{"id":"m"},{"id":"n"},{"id":"o"},{"id":"p"},{"id":"q"},{"id":"r"},{"id":"s"},{"id":"t"},{"id":"u"},{"id":"v"},{"id":"w"},{"id":"x"},{"id":"y"},{"id":"z"},{"id":"aa"},{"id":"ab"},{"id":"ac"},{"id":"ad"},{"id":"ae"},{"id":"af"},{"id":"ag"},{"id":"ah"},{"id":"ai"},{"id":"aj2"},{"id":"ak"},{"id":"al"},{"id":"am"},{"id":"an"},{"id":"ao"},{"id":"ap"},{"id":"ar"},{"id":"aq"},{"id":"as"},{"id":"at"},{"id":"au"},{"id":"av"},{"id":"aw"},{"id":"ax"},]
let links=[{"source":"a","target":"b"},{"source":"b","target":"c"},{"source":"c","target":"d"},{"source":"d","target":"e"},{"source":"e","target":"f"},{"source":"g","target":"h"},{"source":"f","target":"h"},{"source":"g","target":"i"},{"source":"h","target":"i"},{"source":"g","target":"j"},{"source":"i","target":"j"},{"source":"g","target":"k"},{"source":"j","target":"k"},{"source":"g","target":"l"},{"source":"k","target":"l"},{"source":"g","target":"m"},{"source":"l","target":"m"},{"source":"g","target":"n"},{"source":"m","target":"n"},{"source":"g","target":"o"},{"source":"n","target":"o"},{"source":"g","target":"p"},{"source":"o","target":"p"},{"source":"g","target":"q"},{"source":"p","target":"q"},{"source":"r","target":"s"},{"source":"q","target":"s"},{"source":"r","target":"t"},{"source":"s","target":"t"},{"source":"r","target":"u"},{"source":"t","target":"u"},{"source":"r","target":"v"},{"source":"u","target":"v"},{"source":"r","target":"w"},{"source":"v","target":"w"},{"source":"r","target":"x"},{"source":"w","target":"x"},{"source":"r","target":"y"},{"source":"x","target":"y"},{"source":"r","target":"z"},{"source":"y","target":"z"},{"source":"r","target":"aa"},{"source":"z","target":"aa"},{"source":"r","target":"ab"},{"source":"aa","target":"ab"},{"source":"ac","target":"ad"},{"source":"ab","target":"ad"},{"source":"ac","target":"ae"},{"source":"ad","target":"ae"},{"source":"ac","target":"af"},{"source":"ae","target":"af"},{"source":"ac","target":"ag"},{"source":"af","target":"ag"},{"source":"ac","target":"ah"},{"source":"ag","target":"ah"},{"source":"ac","target":"ai"},{"source":"ah","target":"ai"},{"source":"ac","target":"aj2"},{"source":"ai","target":"aj2"},{"source":"ac","target":"ak"},{"source":"aj2","target":"ak"},{"source":"ac","target":"al"},{"source":"ak","target":"al"},{"source":"ac","target":"am"},{"source":"al","target":"am"},{"source":"an","target":"ao"},{"source":"am","target":"ao"},{"source":"an","target":"ap"},{"source":"ao","target":"ap"},{"source":"an","target":"ar"},{"source":"ap","target":"ar"},{"source":"an","target":"aq"},{"source":"ar","target":"aq"},{"source":"an","target":"as"},{"source":"aq","target":"as"},{"source":"an","target":"at"},{"source":"as","target":"at"},{"source":"an","target":"au"},{"source":"at","target":"au"},{"source":"an","target":"av"},{"source":"au","target":"av"},{"source":"an","target":"aw"},{"source":"av","target":"aw"},{"source":"an","target":"ax"},{"source":"aw","target":"ax"}]

const svg = d3.select("#graph")
  .call(d3.zoom().on("zoom", () => networkGraph.attr("transform", d3.event.transform)));

const networkGraph = svg.append("g");

const width = 1000;
const height = 500;

const simulation = d3.forceSimulation(this.nodes)
  .force("link", d3.forceLink(this.links).id((d) => d.id).distance(50).strength(1))
  .force("collide", d3.forceCollide(4.5).iterations(4.5))
  .force("center", d3.forceCenter(width / 2, height / 2))
  .force("charge", d3.forceManyBody().strength(-120))
  .force("gravity", d3.forceManyBody().strength(30))
  .force("x", d3.forceX())
  .force("y", d3.forceY())
  .alphaTarget(1);

const drag = () => {
  const dragStarted = (d) => {
    if (!d3.event.active) {
      simulation.alphaTarget(0.3).restart();
    }
    d.fx = d.x;
    d.fy = d.y;
  }

  const dragged = (d) => {
    d.fx = d3.event.x;
    d.fy = d3.event.y;
  }

  const dragEnded = (d) => {
    if (!d3.event.active) {
      simulation.alphaTarget(0);
    }
    d.fx = null;
    d.fy = null;
  };

  return d3.drag()
    .on("start", dragStarted)
    .on("drag", dragged)
    .on("end", dragEnded);
}

let link = networkGraph.append("g").selectAll(".link");
let node = networkGraph.append("g").selectAll(".node");

const update = () => {
  // Spawn vertices.
  node = node.data(nodes, (d) => d.id);
  node.exit().remove();

  const newNodes = node.enter();
  const newNodesGroup = newNodes
    .append("g")
    .attr("class", "node");

  newNodesGroup.append("text")
  newNodesGroup.append("circle");

  // @ts-ignore
  node = newNodesGroup.merge(node);

  const circle = node.selectAll("circle")
    .attr("r", 4.5)
    .call(drag());
  const label = node.selectAll("text")
    .attr("dy", "0.35em")
    .text((d) => d.id);

  // Spawn edges.
  link = link.data(links, (d) => `${d.source} ${d.target}`);
  link.exit().remove();
  link = link.enter()
    .append("line")
    .attr("class", "link")
    .merge(link);

  simulation.on("tick", () => {
    link
      .attr("x1", (d) => d.source.x)
      .attr("y1", (d) => d.source.y)
      .attr("x2", (d) => d.target.x)
      .attr("y2", (d) => d.target.y);

    circle
      .attr("cx", (d) => d.x)
      .attr("cy", (d) => d.y);

    label
      .attr("x", (d) => d.x + 8)
      .attr("y", (d) => d.y);
  });

  simulation.nodes(nodes);
  simulation.force("link").links(links);
  simulation.alpha(1).restart();
}

update();

const pop = () => {
  let popped = nodes.shift();
  links = links.filter(l => l.source.id !== popped.id && l.target.id !== popped.id);
}

setTimeout(() => {
  pop();
  nodes.push({id: "ao2"})
  links.push({ source: "an", target: "ao2"})
  links.push({ source: "am", target: "ao2"})

  pop();
  nodes.push({ id: "ap2"})
  links.push({ source: "an",target: "ap2"})
  links.push({ source: "ao",target: "ap2"})

  pop();
  nodes.push({id: "ar2"})
  links.push({source: "an",target: "ar2"})
  links.push({source: "ap",target: "ar2"})
  
  pop();
  nodes.push({id: "aq2"})
  links.push({source: "an",target: "aq2"})
  links.push({source: "ar",target: "aq2"})

  pop();
  nodes.push({ id: "as2"})
  links.push({ source: "an", target: "as2"})
  links.push({source: "aq",target: "as2"})

  update();
}, 3000);

body {
  background-color: #30404d;
}

svg {
  border-radius: 3px;
  box-shadow: inset 0 0 0 1px rgba(16, 22, 26, 0.4);
  background: rgba(16, 22, 26, 0.3);
  color: #f5f8fa;
}

.link {
  stroke: #777;
  stroke-opacity: 0.3;
  stroke-width: 1.5px;
}

.node circle {
  fill: #ccc;
  stroke: #000;
  stroke-width: 1.5px;
}

.node text {
  display: none;
  font: 10px monospace;
  fill: white;
}

.node:hover circle {
  fill: #000;
}

.node:hover text {
  display: inline;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.13.0/d3.min.js"></script>
<body>
  <svg id="graph" style="width: 1000px; height: 500px;"> </div>
</body>

关于javascript - 进入/退出未正确清理强制布局中弹出的节点/链接，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52116138/

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javascript - 进入/退出未正确清理强制布局中弹出的节点/链接