Mongodb And Mongoose Free Hot!codecamp [2025]

catch (err) console.error('Challenge failed:', err); finally mongoose.connection.close();

This is the heart of FreeCodeCamp’s MongoDB challenges. Let’s master Create, Read, Update, and Delete.

User.remove( _id: 'userId' ).then((result) => console.log(result); ).catch((err) => console.error(err); ); mongodb and mongoose freecodecamp

Book.findOne( title: '1984' ) .populate('author') // 🔥 This replaces the author ID with the Author object .exec(function(err, book) // book.author is now a full object with name: "George Orwell", ... console.log(book.author.name); );

const queryChain = (done) => Person.find( favoriteFoods: 'pizza' ) .sort( name: 1 ) // ascending by name .limit(2) .select('-age') // exclude age field .exec((err, data) => done(err, data)); ; catch (err) console

Person.find({}, function(err, people) if (err) return console.error(err); console.log('All people:', people); );

A schema isn't just for structure; it enforces rules. catch (err) console.error('Challenge failed:'

require('dotenv').config(); const mongoose = require('mongoose');

);