重要参数 inverse

inverse: true

    drawLine() {
      window.addEventListener("resize", this.drawLine);
      let myChart = this.$echarts.init(this.$refs.echarts);
      var option = {
        tooltip: {
          trigger: "axis",
          show: false,
          axisPointer: {
            type: "shadow",
          },
        },
        grid: {
          top: "0%",
          right: "0%",
          left: "0%",
          bottom: "0%",
        },
        xAxis: [
          {
            type: "category",
            data: [
              "星期一",
              "星期二",
              "星期三",
              "星期四",
              "星期五",
              "星期六",
              "星期天",
            ],
            axisLine: {
              show: false,
              lineStyle: {
                color: "#FFFFFF",
              },
            },
            axisLabel: {
              margin: 0,
              show: false,
              color: "#e2e9ff",
              textStyle: {
                fontSize: 14,
              },
            },
            axisTick: {
              show: false,
            },
          },
        ],
        yAxis: [
          {
            axisLabel: {
              formatter: "{value}",
              color: "#e2e9ff",
            },
            inverse: true, //echarts Y轴翻转属性,
            axisTick: {
              show: false,
            },
            axisLine: {
              show: false,
              lineStyle: {
                color: "rgba(0,186,255,.6)",
              },
            },
            splitLine: {
              show: false,
              lineStyle: {
                color: "rgba(255,255,255,0.12)",
              },
            },
          },
        ],
        series: [
          {
            type: "bar",
            data: [70, 100, 100, 100, 100, 100, 100],
            barWidth: "70%",
            itemStyle: {
              normal: {
                color: new this.$echarts.graphic.LinearGradient(
                  0,
                  0,
                  0,
                  1,
                  [
                    {
                      offset: 0,
                      color: "rgba(0,244,255,1)", // 0% 处的颜色
                    },
                    {
                      offset: 1,
                      color: "rgba(0,77,167,1)", // 100% 处的颜色
                    },
                  ],
                  false
                ),
              },
            },
            label: {
              normal: {
                show: true,
                lineHeight: 30,
                formatter: "{c}",
                position: "top",
                textStyle: {
                  color: "#00D6F9",
                  fontSize: 20,
                },
              },
            },
          },
        ],
      };
      myChart.clear();
      myChart.resize();
      myChart.setOption(option);
    },