Ken,
“canvasjs-commercial-3.8.8/jquery.canvasjs.min.js” is a CanvasJS jQuery Plugin which is used to create CanvasJS chart with jQuery library. To create chart using jQuery plugin, please take a look at this documentation page. In the drilldown example, jQuery library is used to bind the click event and you need to include the library either using CDN link or hosted in your server like “/path/jquery.min.js”. Below code should work fine in your case.
<script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
<script src="canvasjs-commercial-3.8.8/canvasjs.min.js"></script>
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Manoj Mohan
Team CanvasJS