JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://canvasjs.com/assets/script/jquery-1.11.1.min.js"></script>
<script src="https://cdn.canvasjs.com/jquery.canvasjs.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jquery-contextmenu/2.4.3/jquery.contextMenu.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-contextmenu/2.4.3/jquery.contextMenu.min.js"></script>

	<div id="chartContainer" style="height: 360px; width: 100%;"></div>

JavaScript

var chart = new CanvasJS.Chart("chartContainer", {
  title: {
    text: "Context Menu for Legend"
  },
  data: [
    {
      type: "column",	
      showInLegend: true,
      dataPoints: [
        { x: 10, y: 71},
        { x: 20, y: 55 },
        { x: 30, y: 50 },
        { x: 40, y: 65 },
        { x: 50, y: 95 },
        { x: 60, y: 68 },
        { x: 70, y: 28 },
        { x: 80, y: 34 },
        { x: 90, y: 14 }
      ]
    }
  ]
});
chart.render();


jQuery(".canvasjs-chart-canvas").last().on("contextmenu", function (e) {
  var legendBounds = chart.legend.get("bounds"); 
  var parentOffset = $(this).parent().offset();
  var relX = e.pageX - parentOffset.left;
  var relY = e.pageY - parentOffset.top;

  if(relX>legendBounds.x1 && relX<legendBounds.x2 && relY>legendBounds.y1 && relY<legendBounds.y2){
    $.contextMenu({
      selector: "div",
      items: {
        "print": {
          name: "Print",
          callback: function() {
            chart.print();
          }
        },
        "sep1": "---------",
        "cancel": {
          name: "Cancel", 
          callback: function() {
            return;
          }
        }
      }
    });
  }

});