使用lodash查找深度嵌套的JSON属性

const _ = require('lodash');

const data = {
  user: {
    name: 'John',
    address: {
      city: 'New York',
      street: '123 Main St'
    }
  }
};

const cityName = _.get(data, 'user.address.city');
console.log(cityName); // 输出：New York

function findNestedProperty(obj, path) {
  const keys = path.split('.');
  let value = obj;
  
  for (let key of keys) {
    if (value && value.hasOwnProperty(key)) {
      value = value[key];
    } else {
      value = undefined;
      break;
    }
  }
  
  return value;
}

const cityName = findNestedProperty(data, 'user.address.city');
console.log(cityName); // 输出：New York