代码
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width,initial-scale=1.0" />
<title>Echarts Example</title>
</head>
<body>
<div id="main" style="width: 600px;height: 400px"></div>
<script src="//cdn.bootcss.com/echarts/4.5.0/echarts.common.js"></script>
<script type="text/javascript">
var cats = [
{ name: '水果', children: ['苹果', '雪梨', '橙子', '香蕉'] },
{ name: '蔬菜', children: ['津白', '紫甘蓝', '苦瓜', '菜心'] },
{ name: '水产', children: ['虎皮虾', '青蟹', '鲈鱼', '大闸蟹'] },
{ name: '干杂', children: ['红豆', '东北大米', '陈皮', '党参'] },
];
// 生成随机数据
// 不必关注
function generateData(cats) {
var MAX = 100,
MIN = 50;
var len = cats.length;
var result = { inner: [], outer: [] };
for (let i = 0; i < len; i++) {
var cat = cats[i];
var vector = [];
for (let j = 0; j < cat.children.length; j++) {
var num = Math.round(Math.random() * (MAX - MIN) + MIN);
vector.push({ name: cat.children[j], value: num });
}
var total = vector.reduce((r, v) => r + v.value, 0);
result.inner.push({ name: cat.name, value: total });
result.outer = result.outer.concat(vector);
}
return result;
}
var myChart = echarts.init(document.getElementById('main'));
var data = generateData(cats);
var option = {
toolbox: {
feature: {
saveAsImage: {},
},
},
series: [
{ type: 'pie', data: data.inner, radius: '40%', label: { position: 'inside' } },
{ type: 'pie', data: data.outer, radius: ['50%', '80%'] },
],
};
myChart.setOption(option);
</script>
</body>
</html>
运行结果