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- <!doctype html>
- <html>
- <head>
- <title>Bar Chart Multi Axis</title>
- <script src="../../../dist/Chart.bundle.js"></script>
- <script src="../../utils.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 barChartData = {
- labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
- datasets: [{
- label: 'Dataset 1',
- backgroundColor: [
- window.chartColors.red,
- window.chartColors.orange,
- window.chartColors.yellow,
- window.chartColors.green,
- window.chartColors.blue,
- window.chartColors.purple,
- window.chartColors.red
- ],
- yAxisID: 'y-axis-1',
- data: [
- randomScalingFactor(),
- randomScalingFactor(),
- randomScalingFactor(),
- randomScalingFactor(),
- randomScalingFactor(),
- randomScalingFactor(),
- randomScalingFactor()
- ]
- }, {
- label: 'Dataset 2',
- backgroundColor: window.chartColors.grey,
- yAxisID: 'y-axis-2',
- data: [
- randomScalingFactor(),
- randomScalingFactor(),
- randomScalingFactor(),
- randomScalingFactor(),
- randomScalingFactor(),
- randomScalingFactor(),
- randomScalingFactor()
- ]
- }]
- };
- window.onload = function() {
- var ctx = document.getElementById('canvas').getContext('2d');
- window.myBar = new Chart(ctx, {
- type: 'bar',
- data: barChartData,
- options: {
- responsive: true,
- title: {
- display: true,
- text: 'Chart.js Bar Chart - Multi Axis'
- },
- tooltips: {
- mode: 'index',
- intersect: true
- },
- scales: {
- yAxes: [{
- type: 'linear', // only linear but allow scale type registration. This allows extensions to exist solely for log scale for instance
- display: true,
- position: 'left',
- id: 'y-axis-1',
- }, {
- type: 'linear', // only linear but allow scale type registration. This allows extensions to exist solely for log scale for instance
- display: true,
- position: 'right',
- id: 'y-axis-2',
- gridLines: {
- drawOnChartArea: false
- }
- }],
- }
- }
- });
- };
- document.getElementById('randomizeData').addEventListener('click', function() {
- barChartData.datasets.forEach(function(dataset) {
- dataset.data = dataset.data.map(function() {
- return randomScalingFactor();
- });
- });
- window.myBar.update();
- });
- </script>
- </body>
- </html>
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