how to compare javascript objects

1var person1={first_name:"bob"};
2var person2 = {first_name:"bob"}; 
3
4//compare the two object
5if(JSON.stringify(person1) === JSON.stringify(person2)){
6    //objects are the same
7}
8

1function shallowEqual(object1, object2) {
2  const keys1 = Object.keys(object1);
3  const keys2 = Object.keys(object2);
4
5  if (keys1.length !== keys2.length) {
6    return false;
7  }
8
9  for (let key of keys1) {
10    if (object1[key] !== object2[key]) {
11      return false;
12    }
13  }
14
15  return true;
16}