Chart.js使用
案例1
-
代码案例
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.d1{
width: 400px;
height: 350px;
}
</style>
</head>
<body>
<div class="d1">
<canvas id="myChart"></canvas>
</div>
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<script>
const ctx = document.getElementById('myChart');
new Chart(ctx, {
type: 'bar',
data: {
labels: ['Red', 'Blue', 'Yellow', 'Green', 'Purple', 'Orange'],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
borderWidth: 1
}]
},
options: {
scales: {
y: {
beginAtZero: true
}
}
}
});
</script>
</body>
</html>
- 效果图
案例2
- 极地图
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.staticfile.org/Chart.js/3.9.1/chart.js"></script>
</head>
<body>
<canvas id="myChart" width="400" height="400"></canvas>
<script>
const ctx = document.getElementById('myChart');
const data = {
labels: [
'Red',
'Green',
'Yellow',
'Grey',
'Blue'
],
datasets: [{
label: '极地图实例',
data: [11, 16, 7, 3, 14],
backgroundColor: [
'rgb(255, 99, 132)',
'rgb(75, 192, 192)',
'rgb(255, 205, 86)',
'rgb(201, 203, 207)',
'rgb(54, 162, 235)'
]
}]
};
const config = {
type: 'polarArea',
data: data,
options: {
responsive: true, // 设置图表为响应式，根据屏幕窗口变化而变化
maintainAspectRatio: false,// 保持图表原有比例
}
};
const myChart = new Chart(ctx, config);
</script>
</body>
</html>
- 效果图
