option = { // backgroundColor: '#143151', tooltip: { trigger: 'axis', // triggerOn: 'click', formatter: function (params, ticket, callback) { // 关于 encode dimensions formatter // https://echarts.apache.org/zh/option.html#tooltip.formatter console.log('params:', params); let item = params[0]; const distance = item.axisValue; // trigger 为 x 轴 const items = params .map((item) => { const { encode, value } = item; const { marker, seriesName } = item; const x = value[encode['x'][0]]; // x 轴 const y = value[encode['y'][0]]; // y 轴 const unit = value[encode['unit'][0]]; // 自定义的数据纬度 return `${marker} ${seriesName}: ${y} ${unit}`; }) .join('
'); setTimeout(function () { callback( ticket, `

附近500米的建筑

汽修厂 (300m)

新新加油站 (230m)

新新快餐店 (93m)

附近 ${distance}

${items}

` ); }, 400); return 'loading...'; }, }, toolbox: { feature: { dataView: { show: true, readOnly: false }, magicType: { show: true, type: ['line', 'bar'] }, restore: { show: true }, saveAsImage: { show: true }, }, }, dataZoom: [ { //缩进的数据展示条 type: 'inside', }, { type: 'slider', //显示拖拽功能 }, ], legend: { icon: 'rect', // data: [ '湿度', '温度'], }, grid: { left: '30px', right: '30px', bottom: '50px', containLabel: true, }, xAxis: [ { splitLine: { show: false, }, type: 'value', // category // data: [], }, ], yAxis: [ { type: 'value', name: '浓度', min: 0, splitLine: { show: false, }, }, ], series: [ { name: '湿度', type: 'line', symbol: 'emptyCircle', //去掉折线图中的节点 emptyCircle none smooth: false, // true 为平滑曲线，false 为直线 // dimensions 起别名, 可以在 encode 用, 可能还有其他地方可以使用 dimensions: ['distanceX', 'valueY', 'unit', 'time'], encode: { x: 'distanceX', // 默认 x轴 y: 'valueY', // 默认 y 轴 unit: 'unit', // 单位自定义的数据, 可用于 formatter time: 'time', tooltip: ['distanceX', 'valueY', 'unit', 'time'], }, data: [ [11.93, '0.49812', 'ppb', '2021-08-23 13:57:40'], [20.89, '0.41282', 'ppb', '2021-08-23 13:57:44'], [47.21, '0.42099', 'ppb', '2021-08-23 13:57:48'], [71.711, '0.44438', 'ppb', '2021-08-23 13:57:52'], [97.45, '0.35489', 'ppb', '2021-08-23 13:57:56'], [126.5, '0.34146', 'ppb', '2021-08-23 13:58:00'], [156.52, '0.42245', 'ppb', '2021-08-23 13:58:04'], [187.14, '0.46058', 'ppb', '2021-08-23 13:58:08'], [217.21, '0.35178', 'ppb', '2021-08-23 13:58:12'], [250.2, '0.35178', 'ppb', '2021-08-23 13:58:16'], [275.41, '0.46936', 'ppb', '2021-08-23 13:58:20'], [309.41, '0.43397', 'ppb', '2021-08-23 13:58:24'], [343.41, '0.39296', 'ppb', '2021-08-23 13:58:28'], [376.75, '0.46826', 'ppb', '2021-08-23 13:58:32'], [410.47, '0.48687', 'ppb', '2021-08-23 13:58:36'], [444.71, '0.48543', 'ppb', '2021-08-23 13:58:40'], [481.34, '0.41846', 'ppb', '2021-08-23 13:58:44'], [505.51, '0.41846', 'ppb', '2021-08-23 13:58:48'], [533.19, '0.40011', 'ppb', '2021-08-23 13:58:52'], [564.17, '0.46921', 'ppb', '2021-08-23 13:58:56'], [597.42, '0.44236', 'ppb', '2021-08-23 13:59:00'], [631.52, '0.42375', 'ppb', '2021-08-23 13:59:04'], [669.38, '0.41315', 'ppb', '2021-08-23 13:59:08'], [709.65, '0.49766', 'ppb', '2021-08-23 13:59:12'], [753.79, '0.47759', 'ppb', '2021-08-23 13:59:16'], [800.09, '0.47759', 'ppb', '2021-08-23 13:59:20'], [847.25, '0.39755', 'ppb', '2021-08-23 13:59:24'], [894.42, '0.42359', 'ppb', '2021-08-23 13:59:28'], [929.13, '0.41451', 'ppb', '2021-08-23 13:59:32'], [975.42, '0.39718', 'ppb', '2021-08-23 13:59:36'], [1030.34, '0.40200', 'ppb', '2021-08-23 13:59:40'], ], // [x,y] 分别对应x和y轴上的坐标，可以自定义位置。而第一种只能按照已有的x坐标顺序排序 }, ], };

示例 formatter