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

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
code
Public
JavaScript
Error Handling
Language

Implement the ensure function so that it throws an error if called without arguments or the argument is undefined. Otherwise it should return the given value.

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Earn a free certificate by achieving top 25% on the Web Developer test with public questions.

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Sunshine Caprio

Java and SQL
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83 more premium Web Developer questions

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

Skills and topics tested

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

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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