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/axios/0.19.2/axios.min.js"></script>
<script src="//cdn.bootcss.com/echarts/4.5.0/echarts.js"></script>
<script type="text/javascript">
// 使用 promise 模拟异步操作
function fetchData() {
return new Promise((r) => {
setTimeout(() => {
r([27, 32, 69, 127, 147, 76, 86]);
// 延迟3s返回，模拟耗时请求
}, 3000);
});
}
// await 语句必须包进async函数
(async () => {
// 1. 初始化图表实例
const myChart = echarts.init(document.getElementById('main'));
// 2. 触发加载动画
myChart.showLoading();
// 3. 调用异步接口加载数据
const data = await fetchData();
const option = {
xAxis: { type: 'category', data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'] },
yAxis: { type: 'value' },
series: [{ type: 'bar', data: data }],
};
// 4. 设置图表配置
myChart.setOption(option);
// 5. 隐藏加载动画
myChart.hideLoading();
})();
</script>
</body>
</html>
运行结果