mirror of
https://github.com/chartjs/Chart.js.git
synced 2024-10-06 12:19:08 +02:00
176 lines
4.3 KiB
HTML
176 lines
4.3 KiB
HTML
<!doctype html>
|
|
<html>
|
|
|
|
<head>
|
|
<title>Line Chart</title>
|
|
<script src="../../dist/Chart.min.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>
|
|
<br>
|
|
<br>
|
|
<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>
|
|
<script>
|
|
var MONTHS = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
|
|
var config = {
|
|
type: 'line',
|
|
data: {
|
|
labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
|
|
datasets: [{
|
|
label: 'My First dataset',
|
|
backgroundColor: window.chartColors.red,
|
|
borderColor: window.chartColors.red,
|
|
data: [
|
|
randomScalingFactor(),
|
|
randomScalingFactor(),
|
|
randomScalingFactor(),
|
|
randomScalingFactor(),
|
|
randomScalingFactor(),
|
|
randomScalingFactor(),
|
|
randomScalingFactor()
|
|
],
|
|
fill: false,
|
|
}, {
|
|
label: 'My Second dataset',
|
|
fill: false,
|
|
backgroundColor: window.chartColors.blue,
|
|
borderColor: window.chartColors.blue,
|
|
data: [
|
|
randomScalingFactor(),
|
|
randomScalingFactor(),
|
|
randomScalingFactor(),
|
|
randomScalingFactor(),
|
|
randomScalingFactor(),
|
|
randomScalingFactor(),
|
|
randomScalingFactor()
|
|
],
|
|
}]
|
|
},
|
|
options: {
|
|
responsive: true,
|
|
title: {
|
|
display: true,
|
|
text: 'Chart.js Line Chart'
|
|
},
|
|
tooltips: {
|
|
mode: 'index',
|
|
intersect: false,
|
|
},
|
|
hover: {
|
|
mode: 'nearest',
|
|
intersect: true
|
|
},
|
|
scales: {
|
|
x: {
|
|
display: true,
|
|
scaleLabel: {
|
|
display: true,
|
|
labelString: 'Month',
|
|
lineHeight: 1.2,
|
|
fontColor: '#911',
|
|
fontFamily: 'Comic Sans MS',
|
|
fontSize: 20,
|
|
fontStyle: 'bold',
|
|
padding: {top: 20, left: 0, right: 0, bottom: 0}
|
|
}
|
|
},
|
|
y: {
|
|
display: true,
|
|
scaleLabel: {
|
|
display: true,
|
|
labelString: 'Value',
|
|
lineHeight: 1.2,
|
|
fontColor: '#191',
|
|
fontFamily: 'Times',
|
|
fontSize: 20,
|
|
fontStyle: 'normal',
|
|
padding: {top: 30, left: 0, right: 0, bottom: 0}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
window.onload = function() {
|
|
var ctx = document.getElementById('canvas').getContext('2d');
|
|
window.myLine = 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.myLine.update();
|
|
});
|
|
|
|
var colorNames = Object.keys(window.chartColors);
|
|
document.getElementById('addDataset').addEventListener('click', function() {
|
|
var colorName = colorNames[config.data.datasets.length % colorNames.length];
|
|
var newColor = window.chartColors[colorName];
|
|
var newDataset = {
|
|
label: 'Dataset ' + config.data.datasets.length,
|
|
backgroundColor: newColor,
|
|
borderColor: newColor,
|
|
data: [],
|
|
fill: false
|
|
};
|
|
|
|
for (var index = 0; index < config.data.labels.length; ++index) {
|
|
newDataset.data.push(randomScalingFactor());
|
|
}
|
|
|
|
config.data.datasets.push(newDataset);
|
|
window.myLine.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.myLine.update();
|
|
}
|
|
});
|
|
|
|
document.getElementById('removeDataset').addEventListener('click', function() {
|
|
config.data.datasets.splice(0, 1);
|
|
window.myLine.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.myLine.update();
|
|
});
|
|
</script>
|
|
</body>
|
|
|
|
</html>
|