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 myChart = echarts.init(document.getElementById('main'));
var data = [
['Mon', 820],
['Tue', 932],
['Wed', 901],
['Thu', 934],
['Fri', 1290],
['Sat', 1330],
['Sun', 1320],
];
var total = data.reduce((r, row) => r + row[1], 0);
var option = {
toolbox: {
feature: {
saveAsImage: {},
},
},
xAxis: {
type: 'category',
data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
},
yAxis: {
type: 'value',
},
series: [
{
data: data,
type: 'line',
label: {
show: true,
position: 'bottom',
formatter(obj) {
var data = obj.data;
var v = data[1];
// 计算百分比
var percent = ((v / total) * 100).toFixed(2);
return data[0] + ': ' + v + '\n' + percent + '%';
},
},
},
],
};
myChart.setOption(option);
</script>
</body>
</html>
运行结果