samples/bar.html
<!doctype html>
<html>
<head>
<title>chartjs-plugin-style sample</title>
<script src="https://cdn.jsdelivr.net/npm/chart.js@2.8.0"></script>
<script src="../dist/chartjs-plugin-style.js"></script>
<style>
canvas {
-moz-user-select: none;
-webkit-user-select: none;
-ms-user-select: none;
}
.chart {
margin: auto;
width: 75%;
}
.text-center {
text-align: center;
}
</style>
</head>
<body>
<div class="chart">
<canvas id="myChart"></canvas>
</div>
<div>
<p class="text-center">
<button id="randomizeData">Randomize Data</button>
<button id="addDataset">Add Dataset</button>
<button id="removeDataset">Remove Dataset</button>
<button id="addData">Add Data</button>
<button id="removeData">Remove Data</button>
</p>
</div>
<script>
var chartColors = {
red: 'rgb(255, 99, 132)',
orange: 'rgb(255, 159, 64)',
yellow: 'rgb(255, 205, 86)',
green: 'rgb(75, 192, 192)',
blue: 'rgb(54, 162, 235)',
purple: 'rgb(153, 102, 255)',
grey: 'rgb(201, 203, 207)'
};
var effectColors = {
highlight: 'rgba(255, 255, 255, 0.75)',
shadow: 'rgba(0, 0, 0, 0.5)',
glow: 'rgb(255, 255, 0)'
};
function randomScalingFactor() {
return (Math.random() > 0.5 ? 1.0 : -1.0) * Math.round(Math.random() * 100);
}
var MONTHS = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
var color = Chart.helpers.color;
var config = {
type: 'bar',
data: {
labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
datasets: [{
label: 'Dataset 1',
backgroundColor: chartColors.red,
borderWidth: 0,
data: [0, 0, 0, 0, 0, 0, 0].map(function() {
return randomScalingFactor();
}),
shadowOffsetX: 3,
shadowOffsetY: 3,
shadowBlur: 10,
shadowColor: effectColors.shadow,
bevelWidth: 2,
bevelHighlightColor: effectColors.highlight,
bevelShadowColor: effectColors.shadow,
hoverInnerGlowWidth: 20,
hoverInnerGlowColor: effectColors.glow,
hoverOuterGlowWidth: 20,
hoverOuterGlowColor: effectColors.glow
}, {
label: 'Dataset 2',
backgroundColor: chartColors.blue,
borderWidth: 0,
data: [0, 0, 0, 0, 0, 0, 0].map(function() {
return randomScalingFactor();
}),
shadowOffsetX: 3,
shadowOffsetY: 3,
shadowBlur: 10,
shadowColor: effectColors.shadow,
bevelWidth: 2,
bevelHighlightColor: effectColors.highlight,
bevelShadowColor: effectColors.shadow,
hoverInnerGlowWidth: 20,
hoverInnerGlowColor: effectColors.glow,
hoverOuterGlowWidth: 20,
hoverOuterGlowColor: effectColors.glow
}]
},
options: {
title: {
display: true,
text: 'Mixed (bar chart) sample'
},
scales: {
xAxes: [{
scaleLabel: {
display: true,
labelString: 'Month'
}
}],
yAxes: [{
scaleLabel: {
display: true,
labelString: 'Value'
}
}]
},
tooltips: {
shadowOffsetX: 3,
shadowOffsetY: 3,
shadowBlur: 10,
shadowColor: effectColors.shadow,
bevelWidth: 2,
bevelHighlightColor: effectColors.highlight,
bevelShadowColor: effectColors.shadow
}
}
};
window.onload = function() {
var ctx = document.getElementById('myChart').getContext('2d');
window.myChart = new Chart(ctx, config);
};
document.getElementById('randomizeData').addEventListener('click', function() {
config.data.datasets.forEach(function(dataset) {
dataset.data = dataset.data.map(function() {
return randomScalingFactor();
});
});
window.myChart.update();
});
var colorNames = Object.keys(chartColors);
document.getElementById('addDataset').addEventListener('click', function() {
var colorName = colorNames[config.data.datasets.length % colorNames.length];
var newColor = chartColors[colorName];
var newDataset = {
label: 'Dataset ' + (config.data.datasets.length + 1),
backgroundColor: newColor,
borderWidth: 0,
data: [],
shadowOffsetX: 3,
shadowOffsetY: 3,
shadowBlur: 10,
shadowColor: effectColors.shadow,
bevelWidth: 2,
bevelHighlightColor: effectColors.highlight,
bevelShadowColor: effectColors.shadow,
hoverInnerGlowWidth: 20,
hoverInnerGlowColor: effectColors.glow,
hoverOuterGlowWidth: 20,
hoverOuterGlowColor: effectColors.glow
};
for (var index = 0; index < config.data.labels.length; ++index) {
newDataset.data.push(randomScalingFactor());
}
config.data.datasets.push(newDataset);
window.myChart.update();
});
document.getElementById('removeDataset').addEventListener('click', function() {
config.data.datasets.pop();
window.myChart.update();
});
document.getElementById('addData').addEventListener('click', function() {
if (config.data.datasets.length > 0) {
var month = MONTHS[config.data.labels.length % MONTHS.length];
config.data.labels.push(month);
config.data.datasets.forEach(function(dataset) {
dataset.data.push(randomScalingFactor());
});
window.myChart.update();
}
});
document.getElementById('removeData').addEventListener('click', function() {
config.data.labels.splice(-1, 1); // remove the label first
config.data.datasets.forEach(function(dataset) {
dataset.data.pop();
});
window.myChart.update();
});
</script>
</body>
</html>