ChartJS Line Chart

Multiple Line Chart

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.3.0/Chart.js"></script>
<body>
    <canvas id="chartJSContainer" width="100" height="100"></canvas>
    <img src="" id="coolImage" class="img-fluid" alt="Responsive image">
    <button id="create">Create image</button>
    </body>

CSS

#chartJSContainer {
  opacity:0.2;
}
#coolimage {
  border:1px solid blue;
}

JavaScript

var options = {
  type: 'line',
  data: {
    labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
    datasets: [
	    {
	      label: '# of Votes',
	      data: [12, 19, 3, 5, 2, 3],
      	borderWidth: 1,
        backgroundColor: 'rgba(255, 0, 15, 0.54)'
    	},	
			{
				label: '# of Points',
				data: [7, 11, 5, 8, 3, 7],
				borderWidth: 1
			}
		]
  },
  options: {
  label: {
      fontSize: 50
    },
  	scales: {
    	yAxes: [{
        ticks: {
					reverse: false
        }
      }]
    }
  }
}

var canvas = document.getElementById('chartJSContainer');
var ctx = canvas.getContext('2d');
var lineChart = new Chart(ctx, options);
var button = document.getElementById("create")

button.addEventListener("click", function() {
var dataURL = canvas.toDataURL();
console.log(dataURL);
document.getElementById('coolImage').src = dataURL;
})