javascript - Node.js 中的循环多维数组

Question

嘿，我在 Polygons.js 中找到了这个对象:

var polygons = [
  {
    "_id" : "12345",
    "geometry" : {
       "coordinates" : [[
           [9.123553, 48.71568],
           [ 9.119548, 48.71526 ]
       ]]
    }
  },
  {
    "_id" : "67890",
    "geometry" : {
       "coordinates" : [[
           [ 9.090445, 48.715736 ],
           [ 9.089583, 48.715687 ]
       ]]
    }
  }
]

我想循环遍历这个数组以获得如下的结果:

[
  { 
    "_id" : "12345",
    "coordinates" : [[
      [9.123553, 48.71568],
      [ 9.119548, 48.71526 ]  
    ]]
  },
  { 
    "_id" : "67890",
    "coordinates" : [[
      [ 9.090445, 48.715736 ],
      [ 9.089583, 48.715687 ]  
    ]]
  }
]

有人知道如何解决吗？ 非常感谢您的关注!

Answer 1

您可以映射数组并进行所需的更改

formatted_polygons = polygons.map(function(polygon){
    return {
        coordinates : polygon.geometry.coordinates,
        _id : polygon._id
    }
});