使用mongoose和nodejs从数组中删除特定元素

const mongoose = require('mongoose');

const schema = new mongoose.Schema({
  arrayField: [String] // 假设你要删除的特定元素在这个数组字段中
});

const Model = mongoose.model('Model', schema);

mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => {
    console.log('Connected to database');
  })
  .catch((error) => {
    console.error('Database connection error:', error);
  });

Model.updateMany({}, { $pull: { arrayField: 'elementToDelete' } })
  .then((result) => {
    console.log('Deleted elements:', result.nModified);
  })
  .catch((error) => {
    console.error('Delete error:', error);
  });

mongoose.disconnect()
  .then(() => {
    console.log('Disconnected from database');
  })
  .catch((error) => {
    console.error('Disconnect error:', error);
  });