遍历对象数组，根据其属性创建一个新的对象数组，而不会重复

function createNewArray(arr, property) {
  const hashTable = {}; // 哈希表
  const newArray = []; // 新的对象数组

  for (let i = 0; i < arr.length; i++) {
    const obj = arr[i];
    const value = obj[property];

    if (!hashTable[value]) {
      hashTable[value] = true;
      newArray.push(obj);
    }
  }

  return newArray;
}

const originalArray = [
  { id: 1, name: 'A' },
  { id: 2, name: 'B' },
  { id: 3, name: 'A' },
  { id: 4, name: 'C' },
  { id: 5, name: 'B' }
];

const newArray = createNewArray(originalArray, 'name');
console.log(newArray);

[
  { id: 1, name: 'A' },
  { id: 2, name: 'B' },
  { id: 4, name: 'C' }
]