Web Developer Online Test

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About the test

The Web Developer online test assesses knowledge of front-end web development skills (HTML, CSS, and JavaScript) through a series of live coding questions that test the ability to implement and style a user interface. Tasks on this test are executed inside the Google Chrome web browser.

The assessment includes solving work-sample tasks such as:

  • Defining HTML elements and their attributes, and applying CSS styles to them.
  • Handling user events and manipulating DOM to build responsive web pages.
  • Serializing to/from JSON and making AJAX calls.

A good front-end web developer needs a solid understanding of HTML, CSS, and JavaScript in order to create modern, interactive, and responsive websites and user interfaces.

Sample public questions

30 min
2D Array

A turn-based strategy game has a grid with water and land. The grid contains a true value where it's water and false where it's land.

The player controls a boat unit with a particular movement pattern. It can only move to fixed destinations from its current position as shown in the image below:

movement pattern

The boat can only move in a direct path through water to the possible destinations, so a destination will become unreachable if there is land in the way. 

Implement the canTravelTo function, that checks whether a destination is reachable by the boat. It should return true for destinations that are reachable according to the pattern above, and false for unreachable or out of bounds destinations which are outside the grid. 

For example, consider the following code:

const gameMatrix = [
  [false, true,  true,  false, false, false],
  [true,  true,  true,  false, false, false],
  [true,  true,  true,  true,  true,  true],
  [false, true,  true,  false, true,  true],
  [false, true,  true,  true,  false, true],
  [false, false, false, false, false, false],

console.log(canTravelTo(gameMatrix, 3, 2, 2, 2)); // true, Valid move
console.log(canTravelTo(gameMatrix, 3, 2, 3, 4)); // false, Can't travel through land
console.log(canTravelTo(gameMatrix, 3, 2, 6, 2)); // false, Out of bounds

The following image shows valid and invalid destinations when the boat is in the position (3, 2):

terrain movement

7 min
Bug Fixing
Element Spacing

A website features a menu with multiple menu items. However, the borders and spacing between and within these items are not properly styled.

Update only the CSS styles for the menu-item class so that the website looks like the image below:

Menu item spacing example.

All borders have a thickness of 2px.

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Java and SQL
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97 more premium Web Developer questions

Links, Truthy Expressions, Ad, Article Style, Cities, Editor, Format Table, Loading, Logo, Shirts, Upload, Warehouse, Widgets, iframe, Function Wrapper, Link, Unique Numbers, Load URL, Photon Frequency, Addition, Bookmark, Screen Reader, Confirm, Blog, Christmas Tree, Data Entry, Price List, Ice Cream Flavors, TestDome Logo, Segment, Height, Product Rating, Validation, Array Search, Screen, Username, Snapshot, Scale Font Size, Hide Button, A Tag, Hobbies, Loading Bar, Table of Names, Reorder, Share Button, Trading Data Paging, New Folder, Chain Link, Special Actions, Log Parser, Log Patch, Cards, Baby Names, Post Comment, Friend, Email Tables, Vectors, Date Transform, Label Color, Construction Game, Students, Airport Networks, Company Stock, Shipping, Tax Calculator, Numbers To Text, Max Sum, Launch Time, Color Codes, Row Appender, Timer, Read Write Execute, Paper Strip, Memory Game, Circuit Simulator, Chemical Machine, Bicycle Report, Game Offer, Curious Leaf, Gaming Console, Travel Blog, Wave Background, Vegetable Encyclopedia, Keywords, Flimsy Ladder, Jogging App, Paragraph, Ticket Transition, Increase Priority, Positive Numbers, Double, Filter, Calories Burned, Node, Timesheet, Planet Search, Digital Flasks.

Skills and topics tested

  • CSS Selectors
  • Styling
  • JavaScript
  • Language
  • Element Spacing
  • Fonts
  • Elements and Attributes
  • HTML5
  • Animation
  • Forms
  • Positioning
  • Hyperlink
  • IFrame
  • Closures
  • Exceptions
  • Algorithmic Thinking
  • Dictionary
  • Ajax
  • HTTP
  • Promise
  • Arrays
  • CSS Advanced
  • Element Size
  • Bookmarks
  • Accessibility
  • Dialog Box
  • Event Handling
  • Semantic Tags
  • Selectors
  • Borders
  • Responsive Design
  • CSS Layout
  • Arithmetic
  • Objects
  • Attribute Manipulation
  • DOM Manipulation
  • Recursion
  • Bug Fixing
  • Classes
  • ECMAScript 2015
  • Regex
  • Strings
  • Asynchronous Calls
  • Iteration
  • JSON
  • Pagination
  • Serialization
  • Sorting
  • Linked List
  • XML
  • Monkey Patching
  • Flexbox
  • Content Manipulation
  • Graphs
  • Inline Styles
  • 2D Array
  • AI Code Review
  • Conditional Statements
  • Loops
  • Timing Events
  • Associative Arrays
  • Callback
  • Conditions
  • Tables
  • CSS Basics
  • UI
  • Tree

For job roles

  • JavaScript Developer
  • UI/UX Developer
  • Web Front-End Developer

Sample candidate report

What others say

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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.

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Product reviews

G2 - Crowd Badge
G2 - High Performer (2022)
Capterra - 4.5 Stars
Capterra - Shortlist (2023)

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