如何查找文档mongoose数组中是否存在某项

const mongoose = require('mongoose');

const Schema = mongoose.Schema;

const yourSchema = new Schema({
  yourArray: [String] // 假设yourArray是一个字符串数组
});

const YourModel = mongoose.model('YourModel', yourSchema);

const searchItem = 'yourItem'; // 要查找的项

YourModel.find({ yourArray: { $in: [searchItem] } }, (err, result) => {
  if (err) {
    console.error(err);
  } else {
    if (result.length > 0) {
      console.log('存在该项');
    } else {
      console.log('不存在该项');
    }
  }
});