echarts实现多个y轴

const trendChart= echarts.init(document.getElementById("trendChart"), "shine"); const trendChartOpt = { tooltip: { trigger: "axis", axisPointer: { type: "none" } }, legend: { left: "center", bottom: 3, itemWidth: 15, itemHeight: 10, textStyle: { fontSize: 12, color: "#b0c2f9" }, data: ["月人流量"] }, grid: { top: 40, bottom: 50, left: 60, right: 60 }, xAxis: { type: "category", axisLine: { lineStyle: {color: "#b0c2f9"} //x轴颜色 }, axisTick: {show: false}, axisLabel: { fontSize: 12, color: "#b0c2f9" //坐标颜色 } }, yAxis: { name: "人数(万人)", type: "value", splitNumber: 5, maxInterval: 5, minInterval: 5, interval: 5, axisLine: { lineStyle: {color: "#b0c2f9"} }, splitLine: {show: false}, axisTick: {color: "#b0c2f9"}, axisLabel: { fontSize: 12, color: "#b0c2f9" } }, visualMap: { show: false, seriesIndex: 2, dimension: 0, pieces: [{ lte: 9, color: "rgba(176, 58, 91, 1)" }, { gt: 9, lte: 11, color: "rgba(176, 58, 91, 0.5)" }] }, series: [{ name: "月人流量", type: "line", yAxisIndex: 0 //默认为0，给定多个y轴时使用1 }] };