Export Chart Data as CSV from Export-Options - CanvasJS JavaScript Charts

Export Chart Data as CSV from Export-Options - CanvasJS JavaScript Charts

HTML

<script src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>
<br/><!-- Just so that JSFiddle's Result label doesn't overlap the Chart -->
<div id="chartContainer" style="height: 360px; width: 100%;"></div>

JavaScript

var chart = new CanvasJS.Chart("chartContainer", {
  exportFileName: "EXPORTNAME",
  myField1: "field x",
	title: {
  	text: "Exporting Chart Data as CSV"
  },
  zoomEnabled: true,
  exportEnabled: true,
	data: [
	{
		type: "column",
		dataPoints: [
			{ x: 60, y: 68 },
			{ x: 70, y: 28 },
			{ x: 80, y: 34 },
			{ x: 90, y: 14 }
		]
	}					
	]
});
chart.myField2 = "field y";

chart.render();

var toolBar = document.getElementsByClassName("canvasjs-chart-toolbar")[0];
if(chart.get("exportEnabled")){
 // button for adding to dashboard
    var addToDash = document.createElement('div');
    var addText = document.createTextNode("Add To Dash");
    addToDash.setAttribute("style", "padding: 12px 8px; background-color: white; color: black")
    addToDash.appendChild(addText);
    
    addToDash.addEventListener("click", function(){
      var exportFileName = chart.get("exportFileName");
      alert("exportFileName: "+exportFileName);
      var myField1 = chart.get("myField1");
      alert("field1: "+myField1);
      var myField2 = chart.myField2;
      alert("field2: "+myField2);
    });
    addToDash.addEventListener("mouseover", function(){
      addToDash.setAttribute("style", "padding: 12px 8px; background-color: #2196F3; color: white")
    });
    addToDash.addEventListener("mouseout", function(){
      addToDash.setAttribute("style", "padding: 12px 8px; background-color: white; color: black")
    });
    toolBar.lastChild.appendChild(addToDash);
    
  }