How to create array of JSON object from another array using Angular js

Question

hello everyone i have the following issue, i have an array of JSON object like this :

$scope.array_one=[

  {
    "field1": "value 1",
    "field2": "value 2",
    "field3": "value 3",
    "field4": "value 4",
    "field5": "value 5",
    "field6": "value 6",
    "field7": "value 7",
    "field8": "value 8"
  },
  {
    "field1": "value 1",
    "field2": "value 2",
    "field3": "value 3",
    "field4": "value 4",
    "field5": "value 5",
    "field6": "value 6",
    "field7": "value 7",
    "field8": "value 8"
  }

  ...
]

i want to create an new array (from the $scope.array_one) that contains only objects with 3 fields

something like this :

[

  {

    "field2": "value 2",
    "field3": "value 3",
    "field6": "value 6",
    "field8": "value 8"
  },
  {
    "field2": "value 2",
    "field3": "value 3",
    "field6": "value 6",
    "field8": "value 8"
  }

  ...
]

anyone can guide me on how to achieve this, i 'm using Angular js.

Regards !

Answer 1

You could map the wanted parts with a destruction.

 var $scope = { array_one: [{ field1: "value 1", field2: "value 2", field3: "value 3", field4: "value 4", field5: "value 5", field6: "value 6", field7: "value 7", field8: "value 8" }, { field1: "value 1", field2: "value 2", field3: "value 3", field4: "value 4", field5: "value 5", field6: "value 6", field7: "value 7", field8: "value 8" }] }, result = $scope.array_one.map( ({ field2, field3, field6, field8 }) => ({ field2, field3, field6, field8 }) ); console.log(result); 

 .as-console-wrapper { max-height: 100% !important; top: 0; } 

Answer 2

Using Array#Map() to create a new array by returning a new object

 let array_one = [ { "field1": "value 1", "field2": "value 2", "field3": "value 3", "field4": "value 4", "field5": "value 5", "field6": "value 6", "field7": "value 7", "field8": "value 8" }, { "field1": "value 1", "field2": "value 2", "field3": "value 3", "field4": "value 4", "field5": "value 5", "field6": "value 6", "field7": "value 7", "field8": "value 8" } ]; let newArray = array_one.map(f => ({ field2 : f.field1, field3 : f.field3, field6 : f.field6, field8 : f.field8, })); console.log(newArray);