<canvas id="chart"></canvas>
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>

const data = {
  datasets: [{
    label: 'First Dataset',
    data: [{
      x: 38,
      y: 40,
      r: 90
    }, {
      x: 21,
      y: 34,
      r: 76
    }],
    backgroundColor: 'rgb(245, 218, 40)'
  }]
};

const config = {
  type: 'bubble',
  data: data,
  options: {}
};

const myChart = new Chart(
  document.getElementById('chart'),
  config
);