npm install gcoord --save

<script src="https://unpkg.com/gcoord@1.0.6/dist/gcoord.global.prod.js"></script>

// 將GPS坐標(biāo)轉(zhuǎn)換為百度地圖坐標(biāo)
const gcoord = require('gcoord');

const gpsCoordinate = [116.403988, 39.914266]; // WGS84坐標(biāo)
const baiduCoordinate = gcoord.transform(
  gpsCoordinate,
  gcoord.WGS84,
  gcoord.BD09
);

console.log(baiduCoordinate); // [116.41661560068297, 39.92196580126834]

const geojson = {
  type: "FeatureCollection",
  features: [{
    type: "Feature",
    geometry: {
      type: "Point",
      coordinates: [116.403988, 39.914266]
    }
  }]
};

// 轉(zhuǎn)換整個(gè)GeoJSON對(duì)象的坐標(biāo)系
gcoord.transform(geojson, gcoord.WGS84, gcoord.GCJ02);

const coordinates = [
  [116.403988, 39.914266],
  [121.473701, 31.230416],
  [113.264385, 23.129112]
];

coordinates.forEach(coord => {
  gcoord.transform(coord, gcoord.WGS84, gcoord.GCJ02);
});

// 獲取手機(jī)GPS坐標(biāo)并顯示在高德地圖上
navigator.geolocation.getCurrentPosition(position => {
  const { longitude, latitude } = position.coords;
  const amapCoord = gcoord.transform(
    [longitude, latitude],
    gcoord.WGS84,
    gcoord.GCJ02
  );
  // 在高德地圖上顯示標(biāo)記
  showMarkerOnAmap(amapCoord);
});

// 統(tǒng)一不同地圖平臺(tái)的坐標(biāo)數(shù)據(jù)
function unifyCoordinates(coord, source) {
  switch(source) {
    case 'baidu':
      return gcoord.transform(coord, gcoord.BD09, gcoord.WGS84);
    case 'amap':
      return gcoord.transform(coord, gcoord.GCJ02, gcoord.WGS84);
    default:
      return coord;
  }
}

gcoord/
├── src/
│   ├── crs/           # 坐標(biāo)系實(shí)現(xiàn)
│   │   ├── WGS84.ts   # WGS84坐標(biāo)系
│   │   ├── GCJ02.ts   # 火星坐標(biāo)系
│   │   └── BD09.ts    # 百度坐標(biāo)系
│   ├── transform.ts   # 核心轉(zhuǎn)換邏輯
│   └── index.ts       # 入口文件
├── test/              # 單元測(cè)試
└── package.json       # 項(xiàng)目配置