This HTML/CSS, JavaScript, and Bootstrap Online Test Separates Good From Bad Hires

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About the test

The HTML/CSS, JavaScript, and Bootstrap online test assesses candidates' knowledge of HTML, CSS and JavaScript as well as their ability to combine those technologies and take advantage of commonly used parts of Bootstrap.

It's an ideal test for pre-employment screening. A good front-end developer should be able to combine HTML, CSS, and JavaScript to create a dynamic and interactive user interface and recognize when to leverage the functionality provided by Bootstrap to make the code more robust and maintainable.

This online test requires candidates to solve common HTML/CSS, JavaScript, and Bootstrap coding problems.

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
5 min
code
Public
Bootstrap
Modals
Plugins

The HTML page contains a button and modal dialog.

Add only Bootstrap 5 HTML attributes without JavaScript so that:

  1. When the Open button is clicked, the modal dialog is opened.
  2. When the Close button is clicked, the modal dialog is closed.
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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94 more premium HTML/CSS, JavaScript, and Bootstrap 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, Grid, Christmas Tree, Timesheet, Email Tables, Data Entry, Price List, Ice Cream Flavors, Memory Game, TestDome Logo, Trending News, Zoo, Display Case, Cat Description, Form Guidelines, Status Buttons, Buttons, Post Comment, Data Sheet, Fruits, 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, Log Patch, Double, Table of Names, Toolbar, 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.

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
  • Bootstrap
  • Grid Layout
  • Borders
  • Inline Styles
  • Selectors
  • Strings
  • CSS Layout
  • Cards
  • Components
  • Badges
  • Buttons
  • Content Manipulation
  • DOM Manipulation
  • Plugins
  • Arithmetic
  • Attribute Manipulation
  • Recursion
  • Bug Fixing
  • ECMAScript 2015
  • Asynchronous Calls
  • Callback
  • Regex
  • JSON
  • Sorting
  • Iteration
  • Monkey Patching
  • Pagination
  • Linked List
  • Tree

For job roles

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