循环通过JavaScript中对象内的数组

const obj = {
  items: [1, 2, 3, 4, 5]
};

for (let i = 0; i < obj.items.length; i++) {
  console.log(obj.items[i]);
}

const obj = {
  items: [1, 2, 3, 4, 5]
};

for (const item of obj.items) {
  console.log(item);
}

const obj = {
  items: [1, 2, 3, 4, 5]
};

obj.items.forEach(function(item) {
  console.log(item);
});

const obj = {
  items: [1, 2, 3, 4, 5]
};

const doubledItems = obj.items.map(function(item) {
  return item * 2;
});

console.log(doubledItems); // [2, 4, 6, 8, 10]

const obj = {
  items: []
};

if (obj.items.length > 0) {
  for (const item of obj.items) {
    console.log(item);
  }
} else {
  console.log("数组为空");
}

const obj = {
  items: [1, 2, 3, 4, 5]
};

for (const item of obj.items) {
  try {
    if (item === 3) {
      throw new Error("遇到特殊值");
    }
    console.log(item);
  } catch (error) {
    console.error(error.message);
  }
}