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We are currently working on two drop-down lists to select two locations. The names and coordinates of the locations are all in json. Because there is a lot of data, it is inconvenient to put each name into HTML, so I checked online. method, but it is still not displayed, I would like to ask how to extract the names in json and put them into the drop-down list of HTML? Thank you.

{
   "北京首都國(guó)際機(jī)場(chǎng)":{
      "latitude":40.08010101,
      "longitude":116.5849991
   },
   "北京西郊機(jī)場(chǎng)":{
      "latitude":39.96080017,
      "longitude":116.2570038
   },
   "內(nèi)蒙古赤峰機(jī)場(chǎng)":{
      "latitude":42.23500061,
      "longitude":118.9079971
   },
   "長(zhǎng)治王村機(jī)場(chǎng)":{
      "latitude":36.24750137,
      "longitude":113.1259995
   },
   "鄂爾多斯伊金霍洛機(jī)場(chǎng)":{
      "latitude":39.49,
      "longitude":109.8613889
   },
   "大同機(jī)場(chǎng)":{
      "latitude":40.06029892,
      "longitude":113.4820023
   },
   "二連浩特賽烏蘇國(guó)際機(jī)場(chǎng)":{
      "latitude":43.4225,
      "longitude":112.0966667
   },
   "邯鄲機(jī)場(chǎng)":{
      "latitude":36.52583333,
      "longitude":114.4255556
   },
   "白塔國(guó)際機(jī)場(chǎng)":{
      "latitude":40.85139847,
      "longitude":111.8239975
   },
   "東山機(jī)場(chǎng)":{
      "latitude":49.20500183,
      "longitude":119.8249969
   },
   "北京南苑機(jī)場(chǎng)":{
      "latitude":39.78279877,
      "longitude":116.3880005
   },
   "包頭二里半機(jī)場(chǎng)":{
      "latitude":40.56000137,
      "longitude":109.9970016
   },
   "山海關(guān)機(jī)場(chǎng)":{
      "latitude":39.9681015,
      "longitude":119.7310028
   },
   "石家莊正定國(guó)際機(jī)場(chǎng)":{
      "latitude":38.28070068,
      "longitude":114.6969986
   },
   "天津?yàn)I海國(guó)際機(jī)場(chǎng)":{
      "latitude":39.12440109,
      "longitude":117.3460007
   },
   "通遼機(jī)場(chǎng)":{
      "latitude":43.55670166,
      "longitude":122.1999969
   },
   "烏海機(jī)場(chǎng)":{
      "latitude":39.7934,
      "longitude":106.7993
   },
   "烏蘭浩特機(jī)場(chǎng)":{
      "latitude":46.195333,
      "longitude":122.008333
   },
   "錫林浩特機(jī)場(chǎng)":{
      "latitude":43.91559982,
      "longitude":115.9639969
   },
   "大連邢臺(tái)機(jī)場(chǎng)":{
      "latitude":36.8831,
      "longitude":114.4293
   },
   "運(yùn)城關(guān)公機(jī)場(chǎng)":{
      "latitude":35.116391,
      "longitude":111.0313889
   },
   "太原武宿機(jī)場(chǎng)":{
      "latitude":37.74689865,
      "longitude":112.6279984
   },
   "北海機(jī)場(chǎng)":{
      "latitude":21.5394001,
      "longitude":109.2939987
   },
   "常德桃花源機(jī)場(chǎng)":{
      "latitude":28.91889954,
      "longitude":111.6399994
   },
   "懷化芷江機(jī)場(chǎng)":{
      "latitude":27.44111111,
      "longitude":109.7
   },
   "大庸機(jī)場(chǎng)":{
      "latitude":29.10280037,
      "longitude":110.4430008
   },
   "廣州白云國(guó)際機(jī)場(chǎng)":{
      "latitude":23.39240074,
      "longitude":113.2990036
   },
   "長(zhǎng)沙黃花國(guó)際機(jī)場(chǎng)":{
      "latitude":28.18919945,
      "longitude":113.2200012
   },
   "衡陽(yáng)東江機(jī)場(chǎng)":{
      "latitude":26.90530014,
      "longitude":112.6279984
   },
   "桂林兩江國(guó)際機(jī)場(chǎng)":{
      "latitude":25.21809959,
      "longitude":110.0390015
   },
   "羅定素龍機(jī)場(chǎng)":{
      "latitude":22.711169,
      "longitude":111.60134
   },
   "零陵機(jī)場(chǎng)":{
      "latitude":26.338661,
      "longitude":111.610043
   },
   "梅縣機(jī)場(chǎng)":{
      "latitude":24.35000038,
      "longitude":116.1330032
   },
   "南寧吳圩機(jī)場(chǎng)":{
      "latitude":22.60829926,
      "longitude":108.1719971
   },
   "汕頭外砂機(jī)場(chǎng)":{
      "latitude":23.42690086,
      "longitude":116.762001
   },
   "珠海機(jī)場(chǎng)":{
      "latitude":22.00639915,
      "longitude":113.3759995
   }
}