从数组创建嵌套对象

function createNestedObjectFromArray(arr) {
  let nestedObject = {};

  for (let i = 0; i < arr.length; i++) {
    let keys = arr[i].split('.');
    let value = keys.pop();
    let currentObject = nestedObject;

    for (let j = 0; j < keys.length; j++) {
      let key = keys[j];

      if (!currentObject[key]) {
        currentObject[key] = {};
      }

      currentObject = currentObject[key];
    }

    currentObject = value;
  }

  return nestedObject;
}

// 示例用法
let arr = ['a.b.c', 'a.b.d', 'e.f'];
let nestedObject = createNestedObjectFromArray(arr);
console.log(nestedObject);

{
  "a": {
    "b": {
      "c": {},
      "d": {}
    }
  },
  "e": {
    "f": {}
  }
}