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40 interview questionsfor developers (2025)

Test your developer skills before an interview with 40 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

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40 questions
Hard
10 votes2010 runs1 comment

What is the `contenteditable` attribute in HTML5?

Web developer
html5
contenteditable
Jean-marie Cléryat Dec 2, 2021
Hard
9 votes2011 runs1 comment

What is the HTML element that is used to group related content?

Web developer
html5
tags
Jean-marie Cléryat Dec 1, 2021
Hard
9 votes1991 runs
2 comments

What are the two methods that can be used to send data to a server in HTML5?

Web developer
html5
http
Jean-marie Cléryat Dec 1, 2021
Easy
9 votes1952 runs1 comment

What is the selector `nav a[href^=http://]`?

Web developer
html5
selectors
Jean-marie Cléryat Dec 1, 2021
Hard
8 votes2042 runs0 comment

What is the `<output>` element in HTML5?

Web developer
html5
form
Jean-marie Cléryat Dec 1, 2021
Hard
8 votes2029 runs0 comment

How to add a border to an image in HTML5

Web developer
html5
javascript
Jean-marie Cléryat Dec 2, 2021
Easy
8 votes1955 runs1 comment

How to create a navigation section in HTML5

Web developer
html
section
Jean-marie Cléryat Dec 1, 2021
Hard
7 votes2069 runs1 comment

What is the name of the technology that allows you to cache data and serve it offline?

Web developer
service workers
Jean-marie Cléryat Dec 1, 2021
Medium
7 votes2034 runs0 comment

What is the name of the HTML5 element that is used to display a video?

Web developer
html5
video
Jean-marie Cléryat Dec 1, 2021
Hard
6 votes2059 runs0 comment

How to select all images in HTML5 with CSS

Web developer
css
selectors
Jean-marie Cléryat Nov 29, 2021
Hard
6 votes2029 runs1 comment

Calculate the vertical spacing between 2 paragraphs in HTML5

Web developer
html
css
Jean-marie Cléryat Feb 13, 2024
Hard
6 votes2023 runs0 comment

Write a doctype for HTML5

Web developer
html5
doctype
Jean-marie Cléryat Dec 2, 2021
Hard
6 votes2021 runs2 comments

Which statements are true regarding the image management on this web page?

Web developer
html
images
Jean-marie Cléryat Mar 28, 2023
Easy
6 votes1984 runs1 comment

What is the default value of the justify-content property in HTML5?

Web developer
css
flexbox
Jean-marie Cléryat Nov 29, 2021
Hard
5 votes2036 runs0 comment

What are the two main ways to implement real-time communication in HTML5?

Web developer
event
eventsource
Jean-marie Cléryat Dec 1, 2021
Easy
5 votes2001 runs
2 comments

How to add a sandbox attribute to an iframe in HTML5

Web developer
iframe
sandbox
Jean-marie Cléryat Dec 1, 2021
Hard
5 votes1983 runs0 comment

What is the name of the HTML5 feature that allows you to add metadata to an element?

Web developer
html5
data-attributes
Jean-marie Cléryat Dec 2, 2021
Easy
5 votes1983 runs0 comment

Explain the difference between `<video>` and `<object>` in HTML5.

Web developer
html5
video
Jean-marie Cléryat Dec 1, 2021
Hard
4 votes1976 runs0 comment

Differences between SVG and Canvas

Web developer
html5
svg
canvas
Jean-marie Cléryat Dec 2, 2021
Hard
3 votes2006 runs0 comment

What are the 4 CSS properties that are required to make a div element scrollable?

Web developer
css
html
Jean-marie Cléryat Dec 1, 2021