compare two arrays

let arr1 = [
  {id: "pduutGbL2-M",  isChecked: true},
  {id: "J6MJPuJiDPo",  isChecked: true}
]

let arr2 = [
  {id: "pduutGbL2-M",  isChecked: false},
  {id: "J6MJPuJiDPo",  isChecked: false},
  {id: "WD6jyaFrVM8",  isChecked: false},
  {id: "ULP07chR5EQ",  isChecked: false}
]


for(const el of arr1) {
  const index = arr2.findIndex(x => x.id === el.id);
  arr2[index].isChecked = true;
}

console.log(arr2);