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- <!doctype html>
- <html>
-
- <head>
- <title>Bar Chart Multi Axis</title>
- <script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
- <script src="../dist/Chart.bundle.js"></script>
- <style>
- canvas {
- -moz-user-select: none;
- -webkit-user-select: none;
- -ms-user-select: none;
- }
- </style>
- </head>
-
- <body>
- <div style="width: 75%">
- <canvas id="canvas"></canvas>
- </div>
- <button id="randomizeData">Randomize Data</button>
- <script>
- var randomScalingFactor = function() {
- return (Math.random() > 0.5 ? 1.0 : -1.0) * Math.round(Math.random() * 100);
- };
- var randomColorFactor = function() {
- return Math.round(Math.random() * 255);
- };
- var randomColor = function() {
- return 'rgba(' + randomColorFactor() + ',' + randomColorFactor() + ',' + randomColorFactor() + ',.7)';
- };
-
- var barChartData = {
- labels: ["January", "February", "March", "April", "May", "June", "July"],
- datasets: [{
- label: 'Dataset 1',
- backgroundColor: "rgba(220,220,220,0.5)",
- yAxisID: "y-axis-1",
- data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
- }, {
- label: 'Dataset 2',
- backgroundColor: "rgba(151,187,205,0.5)",
- yAxisID: "y-axis-2",
- data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
- }, {
- label: 'Dataset 3',
- backgroundColor: [randomColor(), randomColor(), randomColor(), randomColor(), randomColor(), randomColor(), randomColor()],
- yAxisID: "y-axis-1",
- data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
- }]
-
- };
- window.onload = function() {
- var ctx = document.getElementById("canvas").getContext("2d");
- window.myBar = Chart.Bar(ctx, {
- data: barChartData,
- options: {
- responsive: true,
- hoverMode: 'label',
- hoverAnimationDuration: 400,
- stacked: false,
- title:{
- display:true,
- text:"Chart.js Bar Chart - Multi Axis"
- },
- scales: {
- yAxes: [{
- type: "linear",
- display: true,
- position: "left",
- id: "y-axis-1",
- }, {
- type: "linear",
- display: true,
- position: "right",
- id: "y-axis-2",
- gridLines: {
- drawOnChartArea: false
- }
- }],
- }
- }
- });
- };
-
- $('#randomizeData').click(function() {
- $.each(barChartData.datasets, function(i, dataset) {
- if (Chart.helpers.isArray(dataset.backgroundColor)) {
- dataset.backgroundColor= [randomColor(), randomColor(), randomColor(), randomColor(), randomColor(), randomColor(), randomColor()];
- } else {
- dataset.backgroundColor= randomColor();
- }
-
- dataset.data = [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()];
-
- });
- window.myBar.update();
- });
- </script>
- </body>
-
- </html>
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