我试图通过访问嵌套属性来过滤数组中的项&检查它的属性值是否包含某个字符串

function filterArrayByNestedProperty(array, propertyName, searchString) {
  const filteredArray = [];
  
  for (let i = 0; i < array.length; i++) {
    const item = array[i];
    
    // 访问嵌套属性
    const propertyValue = getPropertyByNestedName(item, propertyName);
    
    // 检查属性值是否包含搜索字符串
    if (propertyValue && propertyValue.includes(searchString)) {
      filteredArray.push(item);
    }
  }
  
  return filteredArray;
}

function getPropertyByNestedName(object, propertyName) {
  const propertyNames = propertyName.split('.');
  let propertyValue = object;
  
  for (let i = 0; i < propertyNames.length; i++) {
    const name = propertyNames[i];
    propertyValue = propertyValue[name];
    
    if (propertyValue === undefined) {
      return undefined;
    }
  }
  
  return propertyValue;
}

// 示例用法
const people = [
  { name: 'John', address: { city: 'New York' } },
  { name: 'Alice', address: { city: 'San Francisco' } },
  { name: 'Bob', address: { city: 'Los Angeles' } }
];

const filteredPeople = filterArrayByNestedProperty(people, 'address.city', 'San');
console.log(filteredPeople);