chart.js
Version:
Simple HTML5 charts using the canvas element.
109 lines (103 loc) • 3.45 kB
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, i) {
dataset.data = dataset.data.map(function() {
return randomScalingFactor();
});
});
window.myBar.update();
});
</script>
</body>
</html>