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: 960px;height: 400px"></div>
<script src="//cdn.bootcss.com/axios/0.19.2/axios.min.js"></script>
<script src="//cdn.bootcss.com/moment.js/2.24.0/moment.min.js"></script>
<script src="//cdn.bootcss.com/echarts/4.5.0/echarts.js"></script>
<script type="text/javascript">
// 解析系列中的类目数据
function retriveDates(series) {
const categories = [];
const len = series.length;
for (let i = 0; i < len; i++) {
// 找出尚未收集的时间值
const dates = series[i].data
.map(([date]) => date)
.filter((date) => categories.findIndex((cat) => cat === date) < 0);
// 批量插入
categories.splice(categories.length, 0, ...dates);
}
return categories;
}
// 借助 moment.js 为时间值排序
function sort(categories) {
const format = 'YYYY-MM-DD';
return categories.sort((d1, d2) => moment(d1, format) - moment(d2, format));
}
// 根据类目序列，调整系列数值的位置
function reschedule(series, categories) {
return series.map(({ sku, data }, index) => {
return {
name: sku,
type: 'k',
data: categories.map((cat) => {
const index = data.findIndex(([c]) => c === cat);
return index >= 0 ? data[index].slice(1) : [];
}),
};
});
}
async function run() {
const myChart = echarts.init(document.getElementById('main'));
const { data: statics } = await axios.get('./statics.json');
const dates = retriveDates(statics);
const sortedDates = sort(dates);
const themeColors = ['#d87c7c', '#919e8b', '#d7ab82', '#6e7074'];
const series = reschedule(statics, sortedDates)
// 为系列设置不同的色值
.map((serie, index) => {
const color = themeColors[index];
const liftColor = echarts.color.lift(color, 0.4);
return {
...serie,
itemStyle: {
color: color,
color0: liftColor,
borderColor: color,
borderColor0: liftColor,
},
};
});
const option = {
toolbox: { feature: { saveAsImage: {} } },
xAxis: { type: 'category', data: sortedDates },
yAxis: { type: 'value' },
legend: { data: series.map((s) => s.name) },
series,
};
myChart.setOption(option);
}
run();
</script>
</body>
</html>
运行结果