经纬度wgs84 转 gcj02

高德地图默认的坐标系为 火星坐标系；当我们拿到的是 wgs84 坐标时，可通过下面的方式批量转换。

//wgs84 转 gcj02
let transLng = [];
let defaultArr = [
  [118.857173323590020,28.932497799733710],
  [118.853702543937290,28.932487070821708],
  [118.854378461796610,28.934088349697618],
  [118.855960966425530,28.934050799404929],
  [118.857173484568760,28.934035190771510],
  [118.857178688046130,28.933702111563264],
  [118.857173323590020,28.932497799733710]
];

for(let i=0;i