Draw on canvas - CanvasJS JavaScript Charts

Draw on canvas - 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",
{        
	data: [
	{
		type: "line",
		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 x = chart.axisX[0].convertValueToPixel(18);
var y = chart.axisY[0].convertValueToPixel(60);

chart.ctx.strokeStyle = "#369EAD";
chart.ctx.rect(x, y, 35, 30);
chart.ctx.stroke();

chart.ctx.font = "20px Comic Sans MS";
chart.ctx.fillStyle = "#F08080";
chart.ctx.fillText(" 55",x,y);