js-object-equals.js

const isEqual = (obj1, obj2) => {
  const obj1Keys = Object.keys(obj1);
  const obj2Keys = Object.keys(obj2);

  if (obj1Keys.length !== obj2Keys.length) {
    return false;
  }

  for (let objKey of obj1Keys) {
    if (obj1[objKey] !== obj2[objKey]) {
      return false;
    }
  }

  return true;
};

const obj1 = {
  name: "Kristine",
  age: 13
};

const obj2 = {
  name: "Kristine",
  age: 13
};

obj1 == obj2; // false
isEqual(obj1, obj2); // true