慕课在线编辑器

代码提交代码

<!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