Copy elements from one object to another and show it as json

user_6928538 0
Viewed 34

I have an object and I want to add new elements inside it and remove some elements

console.log("bookmark", bookmark)
[
   {
       "__type": "BookmarksApp.Bookmark",
       "BookmarkID": 1,
       "name": "San Diego, CA",
       "xmin": "-13048800",
       "ymin": "3844800",
       "xmax": "-13037800",
       "ymax": "3870400",
       "UserID": 6
   },
   {
       "__type": "BookmarksApp.Bookmark",
       "BookmarkID": 2,
       "name": "Redlands, California",
       "xmin": "-13052100",
       "ymin": "4024900",
       "xmax": "-13041100",
       "ymax": "4050500",
       "UserID": 6
   }
]

I trayed many ways but it doesn't work with me one of them like this:-

 bookmarkjson = {

                extent: {
                    xmin: JSON.stringify(bookmark.map(a => a.xmin)),
                    ymin: JSON.stringify(bookmark.map(a => a.ymin)),
                    xmax: JSON.stringify(bookmark.map(a => a.xmax)),
                    ymax: JSON.stringify(bookmark.map(a => a.ymax)),
                "spatialreference": {
                "wkid": 102100,
                "latestwkid": 3857
               },
             },
         name:bookmark.map(a => a.name),

 };

the result come like this all objects in one object how can I edit it :-

{
    "xmin": "[\"-13048800\",\"-13052100\"]",
    "ymin": "[\"3844800\",\"4024900\"]",
    "xmax": "[\"-13037800\",\"-13041100\"]",
    "ymax": "[\"3870400\",\"4050500\"]",
    "spatialreference": {
        "wkid": 102100,
        "latestwkid": 3857
    }
}

how can I change it to be like this

 {
                    first: {
                        "extent": {
                            "xmin": -12975100,
                            "ymin": 3993900,
                            "xmax": -12964100,
                            "ymax": 4019500,
                            "spatialReference": {
                                "wkid": 102100,
                                "latestWkid": 3857
                            }
                        },
                        "name": "Palm Springs, CA"
                    },
                    second: {
                        "extent": {
                            "xmin": -13052100,
                            "ymin": 4024900,
                            "xmax": -13041100,
                            "ymax": 4050500,
                            "spatialReference": {
                                "wkid": 102100,
                                "latestWkid": 3857
                            }
                        },
                        "name": "Redlands, California"
                    },
                   
                }

the bookmark is dynamic can has more than 2 objects

arrays json javascript
3 Answers

You can try something like this.

let bookmarks = [
   {
       "__type": "BookmarksApp.Bookmark",
       "BookmarkID": 1,
       "name": "San Diego, CA",
       "xmin": "-13048800",
       "ymin": "3844800",
       "xmax": "-13037800",
       "ymax": "3870400",
       "UserID": 6
   },
   {
       "__type": "BookmarksApp.Bookmark",
       "BookmarkID": 2,
       "name": "Redlands, California",
       "xmin": "-13052100",
       "ymin": "4024900",
       "xmax": "-13041100",
       "ymax": "4050500",
       "UserID": 6
   }
];

let result = bookmarks.map(x => { 
  let extend = 
  { 
    xmin: x.xmin, 
    ymin: x.ymin, 
    xmax: x.xmax, 
    ymax: x.ymax,
    spatialreference: {
      wkid: 102100,
      latestwkid: 3857
     }, 
     name: x.name 
  };
  return { extend: extend };
});

console.log(result)

user_44877900

Try this :

const arr = [
   {
       "__type": "BookmarksApp.Bookmark",
       "BookmarkID": 1,
       "name": "San Diego, CA",
       "xmin": "-13048800",
       "ymin": "3844800",
       "xmax": "-13037800",
       "ymax": "3870400",
       "UserID": 6
   },
   {
       "__type": "BookmarksApp.Bookmark",
       "BookmarkID": 2,
       "name": "Redlands, California",
       "xmin": "-13052100",
       "ymin": "4024900",
       "xmax": "-13041100",
       "ymax": "4050500",
       "UserID": 6
   }
];

const result = {};

arr.forEach((obj, index) => {
    result[index + 1] = {
    extent: {
        xmin: obj.xmin,
      ymin: obj.ymin,
      xmax: obj.xmax,
      ymax: obj.ymax,
      spatialReference: {
        wkid: 102100,
        latestWkid: 3857
      }
    },
    name: obj.name
  };
});

console.log(result);

user_41163000

you shoud not type cast it to string with stringify

you have an array of objects, and you want to create another one with the same length. so use map

let newBookmarkObj = bookmarkObj.map(item => {
  return {
          extend: {
            xmin: item.xmin,
            ymin: item.ymin,
            xmax: item.xmax,
            ymax: item.ymax,
            spatialReference: {
                wkid: 102100,
                latestWkid: 3857
            }
          },
          name: item.name
}
})
user_67438910
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