Express.js Online Test

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About the test

The Express.js online test assesses knowledge of creating web applications and APIs with the Express.js web framework and the Node.js runtime environment.

The assessment includes work-sample tasks such as:

  • Routing HTTP requests to proper endpoints.
  • Creating and parsing HTTP cookies.
  • Coding without blocking the Event Loop.

A good Express.js developer should be able to work with the library effectively in combination with Node.js in order to build robust and scalable web services.

Sample public questions

Easy
3 min
mca
Public
Express.js
Express.js Middleware
HTTP Routing

A blogging application is built using an Express.js backend. The backend serves the frontend code through the public directory and also serves a few static files for the website through the static directory. The code for Express.js application is:

const express = require("express");
const path = require("path");
const app = express();

app.use(express.static(path.join(__dirname, "public")));
app.use("/images", express.static(path.join(__dirname, "static", "images")));
app.use("/files", express.static(path.join(__dirname, "static", "manuals")));

app.listen(80, () => {
  console.log("Blogging app listening on port 80");
});

Below is the folder structure of the application:

Folder structure of application.

Which endpoints will return a status code of 200 for the above application?

Easy
3 min
mca
Public
Node.js
NPM

Consider the following package.json for a Node.js application:

{
  "name": "skill-measure-app",
  "private": true,
  "version": "1.0.0",
  "main": "lib/main.js",
  "scripts": {
    "build": "npm run cleanup & npm run test & npm run publish",
    "cleanup": "rm -fr ./lib",
    "test": "jest",
    "publish": "npm publish lib"
  },
  "dependencies": {
     "jest": "^23.0.1",
     "custom-package": "file:../custom-package"
  }
}

Select all the correct statements.

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17 more premium Express.js questions

Fahrenheit Converter, Shopping Cart, Weather Data, File Exists, Retry Request, Run Sequentially, Stream Transform, Package Declaration, Add Id, Hash Bug, Game Action, Arrange Promises, Movie Ratings, Report Generator, The Firm, Deprecated Calculator, Welcome Cookie.

Skills and topics tested

  • Node.js
  • Modules
  • Events
  • Asynchronous Programming
  • Async-Await
  • Promise
  • JSON
  • Stream
  • NPM
  • Event Loop
  • Bug Fixing
  • Event Emitter
  • Exceptions
  • Express.js
  • HTTP Routing
  • Express.js Middleware
  • Forms
  • Error Handling
  • HTTP

For job roles

  • Express.js Developer
  • Node.js Developer

Sample candidate report

What others say

Decorative quote

Simple, straight-forward technical testing

TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.

Jan Opperman, Grindrod Bank

Product reviews

G2 - Crowd Badge
G2 - High Performer (2022)
Capterra - 4.5 Stars
Capterra - Shortlist (2022)

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