1. 用多x轴实现日期，图标，控制定位固定显示高度

2.背景遮罩抛开echarts另外用div

3.设置grid的offset控制温度折线的范围

html

  <div class="right_bottom">
    <basicEcharts
      style="height: 400px; width: 1200px"
      :option="chartOptions"
      :key="chartUpdate"
    />
    <div
      class="test"
      v-for="(item, index) in gridArr"
      :key="index"
      :style="{ left: item.left }"
    ></div>
  </div>

 遮罩层left值数组

let gridArr = [
    {
        "left": "26px"
    },
    {
        "left": "104px"
    },
    {
        "left": "182px"
    },
    {
        "left": "260px"
    },
    {
        "left": "338px"
    },
    {
        "left": "416px"
    },
    {
        "left": "494px"
    },
    {
        "left": "572px"
    },
    {
        "left": "650px"
    },
    {
        "left": "728px"
    },
    {
        "left": "806px"
    },
    {
        "left": "884px"
    },
    {
        "left": "962px"
    },
    {
        "left": "1040px"
    },
    {
        "left": "1118px"
    }
]

css

.test {
  height: 350px;
  width: 70px;
  background-color: rgba(69, 89, 114, 0.5);
  position: absolute;
  top: 50px;
  left: 38px;
}

echarts的options

{
    "color": [
        "#fff",
        "#fff"
    ],
    "title": {
        "text": "未来15日天气",
        "textStyle": {
            "color": "#fff"
        }
    },
    "grid": {
        "left": "5%",
        "right": "4%",
        "bottom": 0,
        "top": 240
    },
    "tooltip": {
        "trigger": "axis"
    },
    "legend": {
        "show": false
    },
    "xAxis": [
        {
            "type": "category",
            "boundaryGap": false,
            "position": "top",
            "offset": 160,
            "zlevel": 100,
            "axisLine": {
                "show": false
            },
            "axisTick": {
                "show": false
            },
            "axisLabel": {
                "interval": 0,
                "color": "rgba(255, 255, 255, 1)",
                "formatter": "{a|{value}}",
                "rich": {
                    "a": {
                        "fontSize": 14
                    }
                }
            },
            "nameTextStyle": {
                "fontWeight": "bold",
                "fontSize": 19
            },
            "data": [
                "周四",
                "周五",
                "周六",
                "周日",
                "周一",
                "周二",
                "周三",
                "周四",
                "周五",
                "周六",
                "周日",
                "周一",
                "周二",
                "周三",
                "周四"
            ]
        },
        {
            "type": "category",
            "boundaryGap": false,
            "position": "top",
            "offset": 120,
            "zlevel": 100,
            "axisLine": {
                "show": false
            },
            "axisTick": {
                "show": false
            },
            "axisLabel": {
                "interval": 0,
                "color": "rgba(255, 255, 255, 1)",
                "formatter": "{a|{value}}",
                "rich": {
                    "a": {
                        "fontSize": 18
                    }
                }
            },
            "nameTextStyle": {},
            "data": [
                "08/01",
                "08/02",
                "08/03",
                "08/04",
                "08/05",
                "08/06",
                "08/07",
                "08/08",
                "08/09",
                "08/10",
                "08/11",
                "08/12",
                "08/13",
                "08/14",
                "08/15"
            ]
        },
        {
            "type": "category",
            "boundaryGap": false,
            "position": "top",
            "offset": 40,
            "zlevel": 100,
            "axisLine": {
                "show": false
            },
            "axisTick": {
                "show": false
            },
            "axisLabel": {
                "color": "rgba(255, 255, 255, 1)",
                "interval": 0,
                "rich": [
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    },
                    {
                        "backgroundColor": {
                            "image": "/images/weather/W1.png"
                        },
                        "height": 40,
                        "width": 40
                    }
                ]
            },
            "nameTextStyle": {
                "fontWeight": "bold",
                "fontSize": 19
            },
            "data": [
                "小雨",
                "小雨",
                "小雨",
                "多云",
                "中雨",
                "小雨",
                "小雨",
                "小雨",
                "小雨",
                "小雨",
                "小雨",
                "小雨",
                "小雨",
                "小雨",
                "小雨"
            ]
        }
    ],
    "yAxis": {
        "type": "value",
        "show": false,
        "axisLabel": {
            "formatter": "{value} °C",
            "color": "white"
        }
    },
    "series": [
        {
            "name": "最高气温",
            "type": "line",
            "data": [
                "31",
                "31",
                "32",
                "32",
                "30",
                "29",
                "27",
                "28",
                "29",
                "32",
                "32",
                "30",
                "32",
                "33",
                "33"
            ],
            "symbol": "emptyCircle",
            "symbolSize": 10,
            "showSymbol": true,
            "smooth": true,
            "itemStyle": {
                "normal": {}
            },
            "label": {
                "show": true,
                "position": "top",
                "formatter": "{c} °C"
            },
            "lineStyle": {
                "width": 1
            },
            "areaStyle": {
                "opacity": 1,
                "color": "transparent"
            }
        },
        {
            "name": "最低气温",
            "type": "line",
            "data": [
                "23",
                "22",
                "24",
                "23",
                "22",
                "22",
                "19",
                "20",
                "20",
                "21",
                "21",
                "21",
                "19",
                "21",
                "21"
            ],
            "symbol": "emptyCircle",
            "symbolSize": 10,
            "showSymbol": true,
            "smooth": true,
            "itemStyle": {
                "normal": {}
            },
            "label": {
                "show": true,
                "position": "bottom",
                "formatter": "{c} °C"
            },
            "lineStyle": {
                "width": 1
            },
            "areaStyle": {
                "opacity": 1,
                "color": "transparent"
            }
        }
    ]
}