This HTML/CSS, React, Node.js, and SQL Online Test Separates Good From Bad Hires

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About the test

The HTML/CSS, React, Node.js, and SQL online test assesses candidates' knowledge across the whole Web stack from HTML, CSS, and React on the Web front-end and Node.js on the back-end to SQL for data access.

It's an ideal test for pre-employment screening. A good full-stack Node.js developer, who is using React for the front end, must be able to solve problems using Node.js and also to combine React and HTML/CSS to create dynamic and interactive user interfaces. Moreover, they must know how to write and analyze SQL queries, which are used to communicate with the database.

This online test requires candidates to solve common HTML/CSS challenges, React and Node.js coding problems, and to write SQL queries that extract, combine, and manipulate data.

Sample public questions

Easy
7 min
code
Public
HTML/CSS
Borders
Element Size
Styling

Every user on your website has an image avatar that is displayed when they post a comment. You want to style these images differently from other images on your site. Add a CSS class named avatar that fulfils the following requirements:

  1. The avatar's border is rounded, so that it appears as a circle.
  2. The avatar's width and height are both 150px.
  3. The avatar has a solid border, has a width of 2px, and be colored gray.

For example, the avatar in the template should look like:

Cat avatar

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.

Easy
7 min
code
Public
React
Effect Hook
React Hooks
Reference Hook

Finish the FocusableInput component so that the input element automatically receives focus on the first render if the shouldFocus prop is true.

The component should use React Hooks.

Easy
3 min
code
Public
SQL
Aggregation
Select

Given the following data definition, write a query that returns the number of students whose first name is John.

TABLE students
   id INTEGER PRIMARY KEY,
   firstName VARCHAR(30) NOT NULL,
   lastName VARCHAR(30) NOT NULL

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109 more premium HTML/CSS, React, Node.js, and SQL questions

Links, Fahrenheit Converter, Shopping Cart, Ad, Article Style, Baby Names, Cities, Editor, Format Table, Keywords, Label Color, Loading, Logo, Shirts, Upload, Warehouse, Widgets, Weather Data, iframe, Toggle Options Visibility, Cards Widget, Error Catcher, File Exists, Retry Request, Run Sequentially, Product Rating, Stream Transform, Link, Package Declaration, Add Id, Hash Bug, Game Action, Arrange Promises, Click Button, Email Input, List Wrapper, Subscription, Login Form, Product Search, Addition, Async Paragraph, Bookmark, Screen Reader, Game Offer, Bicycle Report, Curious Leaf, Gaming Console, Travel Blog, Blog, Roads, Authors, Autocomplete, Bank Branches, Cheapest Product, Countries, Developers, Hospital Patients, Index Performance, Menu Items, Movies, Projects, Rectangles, Restaurant Menu, Retirees, SMS Messages, Poll, Users and Accounts, Matching Clothes, Agents, Sales, Employee Manager, Auto Show, Delete Orders, Welfare Organization, Tasks, Manager Sales, Student Rankings, Student Activities, Youngest Child, Movies Live, Department Report, Ingredients, Average Salary, Movie Genres, Christmas Tree, Timesheet, Email Tables, Shopping List, Data Entry, Price List, Ice Cream Flavors, TestDome Logo, River Discharge, ATM Locations, Pet Form, Tooltip Component, Simple Calculator, Tab Strip, Theme Context Switcher, Player Status, Transactions, Reorder, Share Button, Contact Form, Email Form, Post Comment, Merge Stock Index, Details, Ban Users.

Skills and topics tested

  • HTML/CSS
  • CSS Selectors
  • Styling
  • Node.js
  • Modules
  • Events
  • Element Spacing
  • Flexbox
  • Positioning
  • Fonts
  • Elements and Attributes
  • HTML5
  • Language
  • Animation
  • Forms
  • Asynchronous Programming
  • Hyperlink
  • IFrame
  • React
  • Data Binding
  • Components
  • Managing State
  • React Hooks
  • Error Boundaries
  • Async-Await
  • Promise
  • Event Handling
  • JSON
  • Stream
  • NPM
  • Event Loop
  • Bug Fixing
  • Event Emitter
  • Exceptions
  • Higher Order Components
  • Conditional Rendering
  • State Hook
  • Hooks
  • Effect Hook
  • CSS Advanced
  • Element Size
  • Asynchronous Calls
  • Bookmarks
  • Accessibility
  • CSS Basics
  • Tables
  • Responsive Design
  • UI
  • Semantic Tags
  • SQL
  • Conditions
  • Views
  • Select
  • Create Index
  • Database Schema
  • Performance Tuning
  • Constraints
  • Create Table
  • Aggregation
  • Subqueries
  • Ordering
  • Indexes
  • Alter Table
  • Group by
  • Update
  • Insert
  • Joins
  • Left Join
  • Right Join
  • Delete
  • SQL CASE
  • Union
  • CTE
  • Borders
  • Inline Styles
  • Selectors
  • CSS Layout
  • Database Normalization
  • Portals
  • Reducer Hook
  • Context
  • Content Manipulation

For job roles

  • Full-Stack Developer
  • JavaScript Developer
  • Node.js Developer
  • React Developer
  • SQL Developer
  • Web 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 High Performer 2022G2 Read Our Reviews

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