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

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

by canvasjs

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", {
	title: {
  	text: "Exporting Chart Data as CSV"
  },
  zoomEnabled: true,
  exportEnabled: true,
	data: [
	{
		type: "column",
		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();

var toolBar = document.getElementsByClassName("canvasjs-chart-toolbar")[0];
if(chart.get("exportEnabled")){
		var exportCSV = document.createElement('div');
    var text = document.createTextNode("Save as CSV");
    exportCSV.setAttribute("style", "padding: 12px 8px; background-color: white; color: black")
    exportCSV.appendChild(text);

    exportCSV.addEventListener("mouseover", function(){
     	 exportCSV.setAttribute("style", "padding: 12px 8px; background-color: #2196F3; color: white")
    });
    exportCSV.addEventListener("mouseout", function(){
      	exportCSV.setAttribute("style", "padding: 12px 8px; background-color: white; color: black")
    });
    exportCSV.addEventListener("click", function(){
      	downloadCSV({ filename: "chart-data.csv", chart: chart })
    });
		toolBar.lastChild.appendChild(exportCSV);
  }
else {
	var exportCSV = document.createElement('button');	
	var text = document.createTextNode("Save as CSV");	
  exportCSV.appendChild(text);
  exportCSV.addEventListener("click", function(){
      	downloadCSV({ filename: "chart-data.csv", chart: chart })
  });
  document.body.appendChild(exportCSV)
}
	

function convertChartDataToCSV(args) {  
  var result, ctr, keys, columnDelimiter, lineDelimiter, data;

  data = args.data || null;
  if (data == null || !data.length) {
    return null;
  }

  columnDelimiter = args.columnDelimiter || ',';
  lineDelimiter = args.lineDelimiter || '\n';

  keys = Object.keys(data[0]);

  result = '';
  result += keys.join(columnDelimiter);
  result += lineDelimiter;

 ...