HTML
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
<title>Chart.js Delay</title>
<meta name="keywords" content="LightYear,光年,后台模板,后台管理系统,光年HTML模板">
<meta name="description" content="LightYear是一个基于Bootstrap的后台管理系统的HTML模板。">
<meta name="author" content="yinqi">
<link rel="stylesheet" type="text/css" href="http://lyear.itshubao.com/v4/css/bootstrap.min.css">
<link rel="stylesheet" type="text/css" href="http://lyear.itshubao.com/v4/css/style.min.css">
</head>
<body>
<div class="chart-example">
<div class="tab-content">
<div class="chart-view"><canvas id="myChart"></canvas></div>
<div class="chart-actions mt-3"></div>
<ul class="nav nav-tabs mt-3">
<li class="nav-item">
<a class="nav-link active" data-toggle="tab" href="#myChart-config" aria-selected="true">Config</a>
</li>
<li class="nav-item">
<a class="nav-link" data-toggle="tab" href="#myChart-setup" aria-selected="false">Setup</a>
</li>
<li class="nav-item">
<a class="nav-link" data-toggle="tab" href="#myChart-actions" aria-selected="false">Actions</a>
</li>
</ul>
<div class="tab-content">
<div class="tab-pane fade show active tab-pane-code" id="myChart-config">
<pre>
let delayed;
const config = {
type: 'bar',
data: data,
options: {
animation: {
onComplete: () => {
delayed = true;
},
delay: (context) => {
let delay = 0;
if (context.type === 'data' && context.mode === 'default' && !delayed) {
delay = context.dataIndex * 300 + context.datasetIndex * 100;
}
return delay;
},
},
scales: {
x: {
stacked: true,
},
y: {
stacked: true
}
}
}
};
</pre>
</div>
<div class="tab-pane fade tab-pane-code" id="myChart-setup">
<pre>
const DATA_COUNT = 7;
const NUMBER_CFG = {count: DATA_COUNT, min: -100, max: 100};
const labels = Utils.months({count: 7});
const data = {
labels: labels,
datasets: [
{
label: 'Dataset 1',
data: Utils.numbers(NUMBER_CFG),
backgroundColor: Utils.CHART_COLORS.red,
},
{
label: 'Dataset 2',
data: Utils.numbers(NUMBER_CFG),
backgroundColor: Utils.CHART_COLORS.blue,
},
{
label: 'Dataset 3',
data: Utils.numbers(NUMBER_CFG),
backgroundColor: Utils.CHART_COLORS.green,
},
]
};
</pre>
</div>
<div class="tab-pane fade tab-pane-code" id="myChart-actions">
<pre>
const actions = [
{
name: 'Randomize',
handler(chart) {
chart.data.datasets.forEach(dataset => {
dataset.data = Utils.numbers({count: chart.data.labels.length, min: -100, max: 100});
});
chart.update();
}
},
];
</pre>
</div>
</div>
</div>
</div>
<script type="text/javascript" src="http://lyear.itshubao.com/v4/js/jquery.min.js"></script>
<script type="text/javascript" src="http://lyear.itshubao.com/v4/js/popper.min.js"></script>
<script type="text/javascript" src="http://lyear.itshubao.com/v4/js/bootstrap.min.js"></script>
<script type="text/javascript" src="https://cdn.bootcdn.net/ajax/libs/Chart.js/4.1.1/chart.umd.min.js"></script>
<script type="text/javascript" src="https://cdn.bootcdn.net/ajax/libs/luxon/3.2.0/luxon.min.js"></script>
<script type="text/javascript" src="http://libs.itshubao.com/chartjs/utils.js"></script>
</body>
</html>
CSS
body{
background: #fff;
}
.tab-content .chart-view {
max-width: 800px;
}
.tab-content .tab-pane-code {
height: 360px;
overflow: auto;
}
.tab-content .tab-pane-code pre {
height: 100%;
margin: 0px;
}
.chart-example {
width: calc(100% - 2px);
border: 1px solid #ececec;
padding: 10px;
}
JavaScript
const actions = [
{
name: 'Randomize',
handler(chart) {
chart.data.datasets.forEach(dataset => {
dataset.data = Utils.numbers({count: chart.data.labels.length, min: -100, max: 100});
});
chart.update();
}
},
];
const DATA_COUNT = 7;
const NUMBER_CFG = {count: DATA_COUNT, min: -100, max: 100};
const labels = Utils.months({count: 7});
const data = {
labels: labels,
datasets: [
{
label: 'Dataset 1',
data: Utils.numbers(NUMBER_CFG),
backgroundColor: Utils.CHART_COLORS.red,
},
{
label: 'Dataset 2',
data: Utils.numbers(NUMBER_CFG),
backgroundColor: Utils.CHART_COLORS.blue,
},
{
label: 'Dataset 3',
data: Utils.numbers(NUMBER_CFG),
backgroundColor: Utils.CHART_COLORS.green,
},
]
};
let delayed;
const config = {
type: 'bar',
data: data,
options: {
animation: {
onComplete: () => {
delayed = true;
},
delay: (context) => {
let delay = 0;
if (context.type === 'data' && context.mode === 'default' && !delayed) {
delay = context.dataIndex * 300 + context.datasetIndex * 100;
}
return delay;
},
},
scales: {
x: {
stacked: true,
},
y: {
stacked: true
}
}
}
};
const ctx = document.getElementById('myChart');
const chart = new Chart(ctx, config);
$.each(actions, function(index, value) {
let aHtml = $('<a></a>').addClass('btn btn-default m-r-5').html(value.name);
$('.chart-actions').append(aHtml);
aHtml.on('click', function () {
value.handler(chart);
});
});