Creating documents in Express - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a new document in Express using Mongoose.

Express

const newUser = new User({ name: 'Alice', age: 25 });
newUser.[1]();

Drag options to blanks, or click blank then click option'

Adelete

Bsave

Cupdate

Dfind

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'find' instead of 'save' to create a document.

Trying to update or delete before saving the document.

The save() method saves the new document to the database.

2fill in blank

medium

Complete the code to create and save a new product document asynchronously.

Express

async function addProduct() {
  const product = new Product({ name: 'Book', price: 15 });
  await product.[1]();
}

Drag options to blanks, or click blank then click option'

AupdateOne

Bremove

CfindOne

Dsave

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'remove' which deletes documents.

Using 'findOne' which searches documents instead of saving.

Using await product.save() saves the new product document asynchronously.

3fill in blank

hard

Fix the error in the code to correctly create a new user document.

Express

const user = new User({ username: 'john' });
user.[1]();

Drag options to blanks, or click blank then click option'

Asave

Bcreate

Cfind

Ddelete

Attempts:

3 left

💡 Hint

Common Mistakes

Calling 'create' on an instance instead of the model.

Not using 'new' keyword to create the document.

You must use new User() to create a document instance before calling save().

4fill in blank

hard

Fill both blanks to create and save a new blog post document with a title and content.

Express

const post = new Post({ title: [1], content: [2] });
await post.save();

Drag options to blanks, or click blank then click option'

A'My Day'

B'Hello World'

C'This is my first post.'

D'Sample content'

Attempts:

3 left

💡 Hint

Common Mistakes

Using unquoted strings causing syntax errors.

Mixing up title and content values.

The title should be a string like 'Hello World' and content a string like 'This is my first post.' to create a meaningful blog post.

5fill in blank

hard

Fill all three blanks to create a new comment document and save it asynchronously.

Express

async function addComment() {
  const comment = new Comment({
    author: [1],
    text: [2],
    date: [3]
  });
  await comment.save();
}

Drag options to blanks, or click blank then click option'

A'Alice'

B'Great post!'

Cnew Date()

D'2023-01-01'

Attempts:

3 left

💡 Hint

Common Mistakes

Using date as a string instead of a Date object.

Forgetting quotes around author or text.

The author and text are strings, so they need quotes. The date is a Date object created with new Date().