98 lines
2.8 KiB
HTML
98 lines
2.8 KiB
HTML
|
<!doctype html>
|
||
|
|
<html>
|
||
|
|
|
||
|
|
<head>
|
||
|
|
<title>Pie Chart</title>
|
||
|
|
<script src="../../Chart.bundle.js"></script>
|
||
|
|
<script src="../utils.js"></script>
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body>
|
||
|
|
<div id="canvas-holder" style="width:40%">
|
||
|
|
<canvas id="chart-area" />
|
||
|
|
</div>
|
||
|
|
<button id="randomizeData">Randomize Data</button>
|
||
|
|
<button id="addDataset">Add Dataset</button>
|
||
|
|
<button id="removeDataset">Remove Dataset</button>
|
||
|
|
<script>
|
||
|
|
var randomScalingFactor = function() {
|
||
|
|
return Math.round(Math.random() * 100);
|
||
|
|
};
|
||
|
|
|
||
|
|
var config = {
|
||
|
|
type: 'pie',
|
||
|
|
data: {
|
||
|
|
datasets: [{
|
||
|
|
data: [
|
||
|
|
randomScalingFactor(),
|
||
|
|
randomScalingFactor(),
|
||
|
|
randomScalingFactor(),
|
||
|
|
randomScalingFactor(),
|
||
|
|
randomScalingFactor(),
|
||
|
|
],
|
||
|
|
backgroundColor: [
|
||
|
|
window.chartColors.red,
|
||
|
|
window.chartColors.orange,
|
||
|
|
window.chartColors.yellow,
|
||
|
|
window.chartColors.green,
|
||
|
|
window.chartColors.blue,
|
||
|
|
],
|
||
|
|
label: 'Dataset 1'
|
||
|
|
}],
|
||
|
|
labels: [
|
||
|
|
"Red",
|
||
|
|
"Orange",
|
||
|
|
"Yellow",
|
||
|
|
"Green",
|
||
|
|
"Blue"
|
||
|
|
]
|
||
|
|
},
|
||
|
|
options: {
|
||
|
|
responsive: true
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
window.onload = function() {
|
||
|
|
var ctx = document.getElementById("chart-area").getContext("2d");
|
||
|
|
window.myPie = 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.myPie.update();
|
||
|
|
});
|
||
|
|
|
||
|
|
var colorNames = Object.keys(window.chartColors);
|
||
|
|
document.getElementById('addDataset').addEventListener('click', function() {
|
||
|
|
var newDataset = {
|
||
|
|
backgroundColor: [],
|
||
|
|
data: [],
|
||
|
|
label: 'New dataset ' + config.data.datasets.length,
|
||
|
|
};
|
||
|
|
|
||
|
|
for (var index = 0; index < config.data.labels.length; ++index) {
|
||
|
|
newDataset.data.push(randomScalingFactor());
|
||
|
|
|
||
|
|
var colorName = colorNames[index % colorNames.length];;
|
||
|
|
var newColor = window.chartColors[colorName];
|
||
|
|
newDataset.backgroundColor.push(newColor);
|
||
|
|
}
|
||
|
|
|
||
|
|
config.data.datasets.push(newDataset);
|
||
|
|
window.myPie.update();
|
||
|
|
});
|
||
|
|
|
||
|
|
document.getElementById('removeDataset').addEventListener('click', function() {
|
||
|
|
config.data.datasets.splice(0, 1);
|
||
|
|
window.myPie.update();
|
||
|
|
});
|
||
|
|
</script>
|
||
|
|
</body>
|
||
|
|
|
||
|
|
</html>
|