如何在nodejs中使用mongoose转换日期格式

npm install mongoose

const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true });

const mySchema = new mongoose.Schema({
  myDate: Date
});

mySchema.methods.toJSON = function() {
  const obj = this.toObject();
  obj.myDate = obj.myDate.toISOString().slice(0, 10); // 转换为YYYY-MM-DD格式
  return obj;
};

const MyModel = mongoose.model('MyModel', mySchema);

// 查询数据
MyModel.find({}, (err, data) => {
  if (err) throw err;
  console.log(data);
});

// 保存数据
const myData = new MyModel({ myDate: new Date() });
myData.save((err) => {
  if (err) throw err;
  console.log('Data saved successfully');
});