JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://visjs.github.io/vis-network/standalone/umd/vis-network.min.js"></script>
<button id="changeNodeButton">Change Node Scale Value</button>
<span id="changeNodeLabel"></span>
<div id="mynetwork"></div>

CSS

#mynetwork {
  width: 600px;
  height: 300px;
  border: 1px solid lightgray;
}

JavaScript

// create an array with nodes
let nodes = new vis.DataSet([
  { id: 1, value: 10, label: "Node 1 (10)" },
  { id: 2, value: 10, label: "Node 2 (10)" },
  { id: 3, value: 10, label: "Node 3 (10)" },
  { id: 4, value: 10, label: "Node 4 (10)" },
  { id: 5, value: 10, label: "Node 5 (10)" },
]);

// create an array with edges
let edges = new vis.DataSet([
  { from: 1, to: 3 },
  { from: 1, to: 2 },
  { from: 2, to: 4 },
  { from: 2, to: 5 },
  { from: 3, to: 3 },
]);

// create a network
const container = document.getElementById("mynetwork");
const data = {
  nodes: nodes,
  edges: edges,
};
const options = {
  nodes: {
    shape: 'dot'
  }
};
const network = new vis.Network(container, data, options);

// Test adjusting the scale node by node
// Quick test method, assumes consistent IDs in nodes DataSet
let nodeToChange = 1;
const btn = document.getElementById('changeNodeButton');
const lbl = document.getElementById('changeNodeLabel');

// On click adjust the value of the node so it scales
btn.addEventListener('click', function(){
  // Get the node to change
  let node = nodes.get(nodeToChange);
  
  // Determine the new value (toggled between 10 and 20)
  let newValue = node.value === 10 ? 20 : 10;
  
  // Update the node in the nodes DataSet
  nodes.update({id: node.id, value: newValue, label: "Node " + node.id + " (" + newValue + ")"})
  
  // Update text label
  lbl.textContent = "Changed node " + nodeToChange + " to value " + newValue;
  
  // increment to next node
  nodeToChange += 1;
  
  if(nodeToChange > nodes.length){
    // Reached end of nodes DataSet, reset to 1
    nodeToChange = 1;
  }
});