var option = {
  grid: {
    top: '18%',
    left: '2%',
    right: '2%',
    bottom: '3%',
    containLabel: true
  },
  legend: {
    x: "40%",
    y: "0%",
    orient: "horizontal",
    textStyle: {
    color: function (data) {
      const value = data.data;
      if (value > 60) {
        return "#FF1700";
      }
      if (value > 30 && value < 60) { return "#F69729"; } if (value > 10 && value < 20) {
        return "#E6CA40";
      }
      if (value < 10) {
        return "#00BBE6";
      }
    }
    }
  },
  xAxis: {
    type: "category",
    name: "",
    nameTextStyle: {
      padding: [-550, 0, 0, -55],
      color: "#5FDAFC",
    },
    data: [ '1:00', '2:00', '3:00', '4:00', '5:00', '6:00', '7:00', '8:00', '9:00', '10:00', '11:00', '12:00'],
    axisLine: {
      lineStyle: {
        color: "#5FDAFC",
      },
    },
    axisTick: {
      show: false,
    },
    splitLine: {
      show: false,
      lineStyle: {
        color: ["red"], // 使用深浅的间隔色
      }
    }
  },
  yAxis: {
    type: "value",
    name: "分数",
    nameTextStyle: {
      padding: [0, 0, 0, 30],
      color: "#5FDAFC",
      align: 'right'
    },
    axisTick: {
      show: false,
    },
    axisLine: {
      lineStyle: {
        color: "#5FDAFC",
      },
    },
    splitLine: {
      show: false,
      lineStyle: {
        color: ["red"],
      }
    }
  },
  emphasis: {
    label: {
      show: true,
    },
  },
  series: [
    {
      name: "模拟分数",
      data: [91, 90, 92, 91.5, 91, 90, 92, 91.5, 91, 91, 90, 92],
      type: "line",
      symbol: "square",
      symbolSize: 8,
      smooth: true,
      itemStyle: {
        normal: {
        color: "#FF7E2C",
          lineStyle: {
            color: "#FF7E2C",
          }
        }
      }
    },
    {
      name: "实际分数",
      data: [84, 83, 83.5, 85, 84, 83, 83.5, 85, 84, 83, 83.5, 85],
      type: "line",
      symbol: "square",
      symbolSize: 8,
      smooth: true,
      itemStyle: {
        normal: {
        color: "#DFFF2C",
        lineStyle: {
          color: "#DFFF2C",
        }
        }
      }
    }
  ]
}
var myChart = echarts.init(document.getElementById('main'));
myChart.setOption(option);

点击运行 》