Chart showing Trend using Line Chart - CanvasJS JavaScript Charts

Chart showing Trend using Line Chart - 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 data = [];

var startValue = {x: 0, y: 40};
var endValue = {x: 50, y: 70};

var chart = new CanvasJS.Chart("chartContainer", {
	title: {
  	text: "Chart showing Trend"
  },
  axisY: {
    includeZero: false
  },
  data: [{
    type: "line",
    dataPoints: data
  },{
  	type: "line", //Line series showing trend
    dataPoints: [startValue, endValue]
  }]
});

randomData(50);
chart.render();

function randomData(count){
  var yValue = 50;
  for (var i = 0; i < count; i++) {
    yValue += Math.round(Math.random() * 10 - 5);
    data.push({ y: yValue});
  }
}