折线1和折线2为拆分版本,折线3为合并版本。
合并方法是采用两个series元素,并分别设置lineStyle
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>ECharts</title> <!-- 引入刚刚下载的 ECharts 文件 --> <script src="echarts.js"></script> <style> main { /*对子元素开启弹性布局*/ display: flex; /*弹性元素在必要的时候换行*/ flex-wrap: wrap; /*将弹性元素居中*/ justify-content: center; } </style> </head> <body> <main> </main> <script type="text/javascript"> const WIDTH = 600; const HEIGHT = 400; // main用来放div1 div2 div3 let container = document.querySelector('main') // div1用来放折线图1 let div1 = createDiv(WIDTH, HEIGHT) container.appendChild(div1) // div2用来放折线图2 let div2 = createDiv(WIDTH, HEIGHT) container.appendChild(div2) // div3用来放折线图3 let div3 = createDiv(WIDTH * 2, HEIGHT, 'none') container.appendChild(div3) // 创建空图 let lineChart1 = echarts.init(div1) let lineChart2 = echarts.init(div2) let lineChart3 = echarts.init(div3) // 模拟两份数据 const DATA_SIZE = 100; let packets = makeDate(DATA_SIZE) let packets1 = packets.slice(0, DATA_SIZE / 2) let packets2 = packets.slice(DATA_SIZE / 2, DATA_SIZE) // 将数据填充到折线图 lineChart1.setOption({ title: { text: '折线1', }, xAxis: { data: packets1.map(p => p.time) }, yAxis: {}, series: [ { data: packets1.map(p => p.data), type: 'line', lineStyle: { color: 'black', } } ] }) lineChart2.setOption({ title: { text: '折线2', }, xAxis: { data: packets2.map(p => p.time) }, yAxis: {}, series: [ { data: packets2.map(p => p.data), type: 'line', lineStyle: { color: 'black', type: 'dashed', opacity: 0.5, } } ] }) lineChart3.setOption({ title: { text: '折线3', }, xAxis: { data: packets1.concat(packets2).map(p => p.time) }, yAxis: {}, series: [ { data: packets1.map(p => p.data), type: 'line', lineStyle: { color: 'black', } }, { data: packets1.concat(packets2).map(p => p.data), type: 'line', lineStyle: { color: 'black', type: 'dashed', opacity: 0.5, } } ] }) function createDiv(width, height, display = 'block') { let result = document.createElement('div') result.style.width = width + 'px' result.style.height = height + 'px' // result.style.display = display return result } function makeDate(dataSize) { let result = []; for (let i = 0; i != dataSize; ++i) { result.push({ time: "t" + i, data: Math.random(), }) } return result; } </script> </body> </html>
待续