Transfer items between two arrays.

transfer-array.js

const arr1 = [
  {
    name: 'item 1',
    selected: true
  },
  {
    name: 'item 2',
    selected: true
  },
  {
    name: 'item 3',
    selected: false
  },
  {
    name: 'item 4',
    selected: true
  }
];
const arr2 = [];

const arr3 = [
  {
    name: 'item 1',
    selected: true
  },
  {
    name: 'item 2',
    selected: true
  },
  {
    name: 'item 3',
    selected: false
  },
  {
    name: 'item 4',
    selected: true
  },
  {
    name: 'item 5',
    selected: true
  },
  {
    name: 'item 6',
    selected: true
  },
  {
    name: 'item 7',
    selected: false
  },
  {
    name: 'item 8',
    selected: true
  }
];
const arr4 = [];

function transfer(srcArr, desArr) {
  srcArr.filter((obj) => obj.selected).forEach((sel) => {
    const index = srcArr.indexOf(sel);
    desArr.push(srcArr.splice(index, 1));
  });
  return desArr;
}

console.log('---start---');
console.log(transfer(arr3, arr4));
console.log('arr1:');
console.log(arr3);
console.log('arr2:');
console.log(arr4);
console.log('--- end ---');