修改在网络中为vis.js选择的特定节点的样式

// 创建网络实例
var container = document.getElementById('network');
var data = {
  nodes: [
    { id: 1, label: 'Node 1' },
    { id: 2, label: 'Node 2' },
    { id: 3, label: 'Node 3' }
  ],
  edges: [
    { from: 1, to: 2 },
    { from: 2, to: 3 }
  ]
};
var options = {};
var network = new vis.Network(container, data, options);

// 选择特定节点
var selectedNodes = network.selectNodes([1]);

// 获取选择的节点
var nodes = selectedNodes.length > 0 ? selectedNodes : network.getSelectedNodes();

// 修改节点样式
if (nodes.length > 0) {
  var node = nodes[0];
  node.setOptions({ color: 'red', shape: 'box' });
}

// 重新绘制网络
network.redraw();