mirror of
https://github.com/chartjs/Chart.js.git
synced 2024-10-07 12:49:07 +02:00
134 lines
3.0 KiB
HTML
134 lines
3.0 KiB
HTML
<!doctype html>
|
|
<html>
|
|
|
|
<head>
|
|
<title>Line Chart</title>
|
|
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.min.js"></script>
|
|
<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:1000px">
|
|
<canvas id="chart1"></canvas>
|
|
</div>
|
|
<br>
|
|
<br>
|
|
Chart Type:
|
|
<select id="type">
|
|
<option value="line">Line</option>
|
|
<option value="bar">Bar</option>
|
|
</select>
|
|
<select id="unit">
|
|
<option value="second">Second</option>
|
|
<option value="minute">Minute</option>
|
|
<option value="hour">Hour</option>
|
|
<option value="day" selected>Day</option>
|
|
<option value="month">Month</option>
|
|
<option value="year">Year</option>
|
|
</select>
|
|
<button id="update">update</button>
|
|
<script>
|
|
function generateData() {
|
|
function randomNumber(min, max) {
|
|
return Math.random() * (max - min) + min;
|
|
}
|
|
|
|
function randomBar(date, lastClose) {
|
|
var open = randomNumber(lastClose * 0.95, lastClose * 1.05).toFixed(2);
|
|
var close = randomNumber(open * 0.95, open * 1.05).toFixed(2);
|
|
return {
|
|
t: date.valueOf(),
|
|
y: close
|
|
};
|
|
}
|
|
|
|
var date = moment('Jan 01 1990', 'MMM DD YYYY');
|
|
var now = moment();
|
|
var data = [];
|
|
var unit = document.getElementById('unit').value;
|
|
for (; data.length < 60 && date.isBefore(now); date = date.clone().add(1, unit)) {
|
|
if (date.isoWeekday() <= 5) {
|
|
data.push(randomBar(date, data.length > 0 ? data[data.length - 1].y : 30));
|
|
}
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
var ctx = document.getElementById('chart1').getContext('2d');
|
|
ctx.canvas.width = 1000;
|
|
ctx.canvas.height = 300;
|
|
|
|
var color = Chart.helpers.color;
|
|
var cfg = {
|
|
type: 'bar',
|
|
data: {
|
|
datasets: [{
|
|
label: 'CHRT - Chart.js Corporation',
|
|
backgroundColor: color(window.chartColors.red).alpha(0.5).rgbString(),
|
|
borderColor: window.chartColors.red,
|
|
data: generateData(),
|
|
type: 'line',
|
|
pointRadius: 0,
|
|
fill: false,
|
|
lineTension: 0,
|
|
borderWidth: 2
|
|
}]
|
|
},
|
|
options: {
|
|
scales: {
|
|
xAxes: [{
|
|
type: 'time',
|
|
distribution: 'series',
|
|
ticks: {
|
|
source: 'data',
|
|
autoSkip: true
|
|
}
|
|
}],
|
|
yAxes: [{
|
|
scaleLabel: {
|
|
display: true,
|
|
labelString: 'Closing price ($)'
|
|
}
|
|
}]
|
|
},
|
|
tooltips: {
|
|
intersect: false,
|
|
mode: 'index',
|
|
callbacks: {
|
|
label: function(tooltipItem, myData) {
|
|
var label = myData.datasets[tooltipItem.datasetIndex].label || '';
|
|
if (label) {
|
|
label += ': ';
|
|
}
|
|
label += parseFloat(tooltipItem.value).toFixed(2);
|
|
return label;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
var chart = new Chart(ctx, cfg);
|
|
|
|
document.getElementById('update').addEventListener('click', function() {
|
|
var type = document.getElementById('type').value;
|
|
var dataset = chart.config.data.datasets[0];
|
|
dataset.type = type;
|
|
dataset.data = generateData();
|
|
chart.update();
|
|
});
|
|
|
|
</script>
|
|
</body>
|
|
|
|
</html>
|