The HTML/CSS and React online test assesses candidates' knowledge of HTML, CSS, and React as well as their ability to leverage commonly used programming patterns.
It's an ideal test for pre-employment screening. A good front-end developer should be able to utilize all these technologies to create a modern, dynamic, and interactive user interface.
This online test requires candidates to solve common HTML/CSS challenges as well as React coding problems.
Recommended Job Roles
JavaScript Developer
React Developer
UI/UX Developer
Web Front-End Developer
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Sample Free Questions
Avatar
7min
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Easy
Easy
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CODE
HTML/CSS
CSS selectors
Styling
Public
HTML/CSS
HTML is the standard markup language for creating web pages. It's an essential skill for anyone creating web pages of any complexity.
CSS selectors
Selectors are a programming pattern that can be used to select an element from a container. They are primarily used in technologies such as CSS and jQuery to apply styles to groups of elements.
Styling
Styling user interfaces according to the specification is a daily routine for a front-end developer.
Public
Public questions (free account) are common interview questions. They are great for practicing, or if you want to filter candidates using the classic problems.
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:
- The avatar's border is rounded, so that it appears as a circle.
- The avatar's width and height are both 150px.
- 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:
Semantics
7min
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Easy
Easy
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CODE
HTML/CSS
HTML5
Public
HTML/CSS
HTML is the standard markup language for creating web pages. It's an essential skill for anyone creating web pages of any complexity.
HTML5
HTML5 is now supported in all modern browsers, making it important for front-end developers to know how to use its features.
Public
Public questions (free account) are common interview questions. They are great for practicing, or if you want to filter candidates using the classic problems.
Update the website's HTML, without using JavaScript or CSS, to make use of semantic elements so that:
- The classless outer div element is replaced with a more appropriate element.
- The divs with the image and caption classes are replaced with self-contained content elements.
- The divs with the lorem-ipsum and description classes are replaced with elements, so that by default only the contents of the description element are shown. When the contents of the description element are clicked, the visibility of the rest of the lorem-ipsum element is toggled.
Focus
15min
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Easy
Easy
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CODE
React
Components
Public
New
React
React is a JavaScript library for building user interfaces. As one of the most widely used frameworks it's important for most JavaScript developers to have a working knowledge of.
Components
Components are used in many frameworks and languages as the building blocks of an application.
Public
Public questions (free account) are common interview questions. They are great for practicing, or if you want to filter candidates using the classic problems.
New
This is a new addition to our question library.
The TextInput component renders an input element in the DOM and accepts a ref that is forwarded to that input element. Finish the FocusableInput component:
- The component should accept a focused prop.
- When the focused prop is changed from false to true, and the input is not focused, it should receive the focus.
- If on mounting the focused prop is true, the input should receive the focus.
Premium Questions
The premium question library contains our unique, hand-crafted questions. We offer a refund if you find any of them answered online.
Questions
Link, Editor, Blog, Label Color, Logo, Article Style, Share Button, Ad, Keywords, Links, Addition, Bookmark, Christmas Tree, iframe, Shirts, Warehouse, Baby Names, Loading, Format Table, Breakfast Menu, Cities, Screen Reader, Timesheet, Tab Strip, Contact Form, Data Entry, Email Form, Tooltip Component, Background Wrapper, Email Tables, TestDome Logo, Ice Cream Flavors, Widgets, Upload, Player Status, Simple Calculator, Theme Context Switcher, Toggle Options Visibility, Shopping ListSkills
HTML/CSSHTML/CSS
HTML is the standard markup language for creating web pages. It's an essential skill for anyone creating web pages of any complexity.
HTML attributes
HTML attributes provide extra information about HTML elements. They are used to add functionality and define behaviors of HTML documents.
HTML5
HTML5 is now supported in all modern browsers, making it important for front-end developers to know how to use its features.
Semantic tags
HTML5 introduced semantic tags, which can greatly improve the level of automated analysis that can be done on documents, as well as improve the readability of HTML.
CSS selectors
Selectors are a programming pattern that can be used to select an element from a container. They are primarily used in technologies such as CSS and jQuery to apply styles to groups of elements.
Positioning
Dynamic positioning of user interface elements depending on resolution is more important than ever in modern applications, making this important for a front-end developer.
Styling
Styling user interfaces according to the specification is a daily routine for a front-end developer.
Language
A programmer should use a language as a tool, always taking advantage of language-specific data types and built-in functions.
CSS advanced
Cascading Style Sheets are the styling language of the web. Knowledge about advanced CSS features is required for seasoned front-end developers.
Animation
Animation is the process in which images or objects are manipulated to appear as if they are moving. It's a powerful effect that is important for UI designers to understand and be able to use.
Selectors
Selectors are a programming pattern that can be used to select an element from a container. They are primarily used in technologies such as CSS and jQuery to apply styles to groups of elements.
Accessibility
Accessibility refers to the design of products, devices, services, or environments for people who experience disabilities. It's important for all designers and developers to know how to optimize for people who experience disabilities.
Tables
A table stores data as rows and columns. From databases to HTML layouts, as a data structure they are ubiquitous. They are an important structure for developers to understand and know how to use.
React
React is a JavaScript library for building user interfaces. As one of the most widely used frameworks it's important for most JavaScript developers to have a working knowledge of.
Components
Components are used in many frameworks and languages as the building blocks of an application.
Conditional rendering
Conditional rendering in React is rendering different components depending on the application state. It is commonly used and, as such, is important for all developers.
CSS layout
Cascading Style Sheets are the styling language of the web. For a front-end developer, a knowledge of CSS layouts is required.
Forms
Forms provide a method of grouping inputs and collecting user data. As such, they are important for all front end developers.
Portals
Portals are a first-class way to render children into a DOM node that exists outside the DOM hierarchy of the parent component. As such, they are a very convenient tool for all developers who need to interact with a virtual DOM.
VDOM
Many modern web frameworks provide a virtual DOM that can be used to improve performance and maintainability of large web applications - as such, it's important for web developers to have a solid understanding of how to interact with both the VDOM and DOM.
CSS basics
Cascading Style Sheets are the styling language of the web. Any good front-end developer requires a knowledge of basic CSS features.
HTML
HTML or Hypertext Markup Language is the standard markup language used to design web pages to be displayed in a web browser. It is the basic building block of the web.
Effect Hook
Using a React Effect Hook allows you to set up a subscription to DOM changes and perform side effects.
State Hook
Using a React State Hook allows you to preserve state between re-renders in a manner that doesn't require render props and higher-order components patterns, which simplifies code.
Hooks
Many frameworks allow developers to add their own plugins and extensions. Hooks are the points within the framework that the developer can access to implement their own logic and designs.
Reducer Hook
Using a React Reducer Hook allows you to pass callbacks with values between components, which simplifies code by removing the need to pass callbacks through every level of a component tree.
Context
React Context provides a way to pass data without using props through every level of the tree.
Data binding
Data binding is a technique for synchronizing data between a component and DOM. For this reason, it’s important for all web developers.
Managing state
Knowing how to overcome statelessness, the intrinsic limitation of web programming, is a very important skill for a web developer.
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