function toAMap(lng, lat) {
    const X_PI = Math.PI * 3000.0 / 180.0;
    let x = lng - 0.0065;
    let y = lat - 0.006;
    let z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * X_PI);
    let theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * X_PI);
    let amap_lng = z * Math.cos(theta);
    let amap_lat = z * Math.sin(theta);
    return {
        lng: amap_lng,
        lat: amap_lat
    }
}

//高德官方方法批量转换
var lnglats = [
    {lng: 120.079833, lat: 30.316997},
    {lng: 120.101293, lat: 30.334685},
    {lng: 120.100079, lat: 30.338022}
];
for(let p of lnglats){
    AMap.convertFrom([p.lng, p.lat], 'baidu', function (status, result) {
      if (result.info === 'ok') {
        p.lng = result.locations[0].lng;
        p.lat = result.locations[0].lat;
      }
    });
}

function toBaiduMap(lng, lat) {
    const X_PI = Math.PI * 3000.0 / 180.0;
    let x = lng;
    let y = lat;
    let z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * X_PI);
    let theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * X_PI);
    let bd_lng = z * Math.cos(theta) + 0.0065;
    let bd_lat = z * Math.sin(theta) + 0.006;
    //console.log(bd_lng+","+bd_lat);
    return {
        lng: bd_lng,
        lat: bd_lat
    };
}