Morgan for HTTP request logging in Express - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import Morgan middleware in an Express app.

Express

const express = require('express');
const morgan = require('[1]');
const app = express();

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

Aexpress

Blogger

Chttp

Dmorgan

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'express' instead of 'morgan' in require.

Using a wrong package name like 'logger'.

You import Morgan by requiring the 'morgan' package. This lets you use Morgan for logging HTTP requests.

2fill in blank

medium

Complete the code to use Morgan middleware with the 'dev' format in the Express app.

Express

app.use([1]('dev'));

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

Aexpress

Blogger

Cmorgan

Dhttp

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'express' instead of 'morgan'.

Forgetting to call the function with parentheses.

Use morgan('dev') to add Morgan middleware with the 'dev' logging format.

3fill in blank

hard

Fix the error in the code to log HTTP requests to a file using Morgan.

Express

const fs = require('fs');
const path = require('path');
const accessLogStream = fs.createWriteStream(path.join(__dirname, '[1]'), { flags: 'a' });
app.use(morgan('combined', { stream: accessLogStream }));

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

Aaccess.log

Baccesslog

Clog_access.txt

Daccess_log

Attempts:

3 left

💡 Hint

Common Mistakes

Using file names without extensions.

Using invalid or missing file names.

The log file name should be a valid string like 'access.log' to store logs properly.

4fill in blank

hard

Fill both blanks to create a custom Morgan token and use it in the log format.

Express

morgan.token('user-agent', function (req) { return req.headers['[1]']; });
app.use(morgan(':method :url :status :res[content-length] - :response-time ms :[2]'));

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

Auser-agent

Bcontent-type

Dreferer

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'content-type' or 'referer' instead of 'user-agent'.

Mismatching token names in definition and format.

The header name is 'user-agent' and the token name used in the format must match it exactly.

5fill in blank

hard

Fill all three blanks to create a conditional Morgan logger that skips logging for requests with status code 304.

Express

app.use(morgan('combined', {
  skip: function (req, res) {
    return res.statusCode [1] [2];
  },
  stream: [3]
}));

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

A===

B304

CaccessLogStream

D!==

Attempts:

3 left

💡 Hint

Common Mistakes

Using !== instead of === in skip condition.

Using wrong status code number.

Not setting the stream correctly.

The skip function returns true when status code is exactly 304, so Morgan skips logging those requests. The stream is set to the log file stream.