<script src="https://unpkg.com/frappe-charts@0.0.4/dist/frappe-charts.min.iife.js"></script>
 
 <div id="chart"></div>

let el = document.querySelector('#chart')

let data = {
    labels: ["12am-3am", "3am-6am", "6am-9am", "9am-12pm",
      "12pm-3pm", "3pm-6pm", "6pm-9pm", "9pm-12am"],

    datasets: [
      {
        title: "Some Data", color: "light-blue",
        values: [25, 40, 30, 35, 8, 52, 17, -4]
      },
      {
        title: "Another Set", color: "violet",
        values: [25, 50, -10, 15, 18, 32, 27, 14]
      },
      {
        title: "Yet Another", color: "blue",
        values: [15, 20, -3, -15, 58, 12, -17, 37]
      }
    ]
  };

  let chart = new Chart({
    parent: el,
    title: "My Awesome Chart",
    data: data,
    type: 'bar', // or 'line', 'scatter', 'pie', 'percentage'
    height: 250
  });