echarts折线图（其他图也是一样）设置tooltip自动滚动

按顺序自动滚动效果

     
class="leftComp-charts" id="chartsBox">
 
 chartsData: {
        roadNorm: [],
        time: []
      },
      eChartsTimer: null
 
 
 
    initChartsBox() {
      this.option = {
        tooltip: {
          trigger: "axis",
          axisPointer: {
            // 方法一
            type: "shadow", // 默认为直线，可选为：'line' | 'shadow'
            shadowStyle: {
              color: "rgba(41, 95, 204, 0.2)",
            },
          },
          borderColor: "rgba(0, 170, 255)", // 边框颜色
        }, // 坐标轴指示器配置
        textStyle: {
          color: "#333", // xy轴的提示文字颜色，不包含背景刻度线
        },
        color: ["#1492FF"],
        grid: {
          top: "25px",
          left: "50px",
          right: "20px",
          bottom: "35px",
        },
        xAxis: [
          {
            type: "category",
            data: this.chartsData.time,
            axisLine: {
              show: true,
              lineStyle: {
                color: "#004080",
                // width: 0,
                type: "solid",
              }, // x轴线的颜色以及宽度
            },
            // axisLabel: {
            //   show: true,
            //   textStyle: {
            //     color: "rgba(255, 255, 255, 0.3)",
            //   }
            // }, // x轴文字的配置
            splitLine: {
              show: false,
              lineStyle: {}, // 分割线配置
            },
            axisTick: {
              show: false,
            }, // x轴的刻度线
          },
        ],
        yAxis: [
          {
            type: "value",
            splitLine: {
              show: true,
              lineStyle: {
                color: "#333",
                opacity: 0.1,
              }, // 设置横向的线的颜色
            },
            axisLabel: {
              show: true,
              margin: 20,
              // textStyle: {
              //   color: "rgba(255, 255, 255, 0.3)",
              // }, // y轴的字体配置
            },
          },
        ],
        series: [
          {
            data: this.chartsData.roadNorm,
            type: "line",
            smooth: true,
          },
        ],
      };
      this.myChart = this.$echarts.init(document.getElementById("chartsBox")); // 图标初始化
      this.myChart.setOption(this.option); // 渲染页面
      var that = this;
      let index = 0;
      this.eChartsTimer = setInterval(function () {
        let len = that.chartsData.time.length;
        if (index >= len) {
          index = 0;
        }
        that.myChart.dispatchAction({
          type: "showTip", // 提示框
          seriesIndex: 0,
          dataIndex: index, // 第 lightIndex 柱子高亮
        });
        index += 1
      }, 1000);
 
      /* ECharts动态效果 */
      window.addEventListener("resize", () => {
        this.myChart.resize();
      });
    },
 
 
 
  mounted() {
    this.initChartsBox()
  },
  destroyed() {
    clearInterval(this.eChartsTimer)
  }
 
 
.leftComp-charts {
width: 600px;
    height: 220px;
    border: 1px solid red;
  }

随机滚动请看这里

    var that = this;
      this.eChartTimer = setInterval(function () {
        var index = Math.round(Math.random() * that.yAxisData.length);
        if (index === 0) {
          index = 1;
        }
        that.myChart.dispatchAction({
          type: "showTip", // 提示框
          seriesIndex: 0,
          dataIndex: index, // 第 lightIndex   柱子高亮
        });
      }, 1000);