如何在nodejs mongoose中只更新一个对象字段

npm install mongoose

const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost:27017/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => {
    console.log('Connected to MongoDB');
  })
  .catch((error) => {
    console.error('Error connecting to MongoDB', error);
  });

const userSchema = new mongoose.Schema({
  name: String
});

const User = mongoose.model('User', userSchema);

User.findOneAndUpdate({ _id: 'your_user_id' }, { name: 'New Name' }, { new: true })
  .then((updatedUser) => {
    console.log('Updated user:', updatedUser);
  })
  .catch((error) => {
    console.error('Error updating user', error);
  });