D3.JS Online Test

About the test:

The D3.js online test uses scenario-based multiple-choice questions to evaluate a candidate's knowledge and skills related to D3.js fundamentals, data binding and manipulation, scales and axes, SVG and Canvas graphics, event handling, transitions and animations, and integrating D3.js with other web technologies. Candidates are also evaluated on their ability to write efficient and reusable code, design and implement complex visualizations, and troubleshoot and debug common issues.

Covered skills:

JavaScript Library
CSS3 Selectors
Scales
Domain
Virtual Enter Selection
Group Element
Parsed Rows
Stacked Chart
Data-Driven Documents
Declarative Programming Approach
Voronoi Diagram
Simple Axis
Backward Compatibility

SVG
DOM Elements
Slider
Path Data Generator
Axis Component
Transitions
Data Binding
Zoom Modes
DOM Manipulation
Built-in ELement Inspector
Data Driven Events
High Charts

See all covered skills

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9 reasons why

Adaface D3.JS Online Test is the most accurate way to shortlist D3 JS Developers

Reason #1

Tests for on-the-job skills

The D3.js Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates.

The Adaface D3.js Online Test screens candidates for the typical skills recruiters look for D3.js Developer roles:

D3.js development experience
Thorough understanding of the D3.js library and related JavaScript technologies
In-depth knowledge of JSON and XML
Proven data analysis and visualisation abilities
Knowledge of web markup, including HTML and CSS
Knowledge of automated testing and version control systems like Git
The ability to meet rigorous deadlines and follow the best project management techniques
Working understanding of JavaScript technologies like Gulp, webpack, yarn
Extensive attention to client needs and project specifics
Previous experience with APIs and third-party libraries
Understanding of object-oriented programming

The insights generated from this assessment can be used by recruiters and hiring managers to identify the best candidates for D3.js Developer roles. Anti-cheating features enable you to be comfortable with conducting assessments online. The D3.js Online Test is ideal for helping recruiters identify which candidates have the skills to do well on the job.

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface ->

Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

These are just a small sample from our library of 10,000+ questions. The actual questions on this D3.JS Test will be non-googleable.

🧐 Question
Medium Async Await Promises Promises Async-Await	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
Easy Bitcoin prices Axios Promises	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
Medium My Module Scope	Solve
What will the output of the following JavaScript code be?
Medium Promise Resolve Promises Async-Await	Solve
What does the following code output?
Easy Throw, Try, Async Promises Async-Await	Solve
What does the following JS code output?

	🧐 Question	🔧 Skill
	Medium Async Await Promises Promises Async-Await	2 mins JavaScript	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Easy Bitcoin prices Axios Promises	2 mins JavaScript	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	Medium My Module Scope	2 mins JavaScript	Solve
What will the output of the following JavaScript code be?
	Medium Promise Resolve Promises Async-Await	2 mins JavaScript	Solve
What does the following code output?
	Easy Throw, Try, Async Promises Async-Await	2 mins JavaScript	Solve
What does the following JS code output?

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Async Await Promises Promises Async-Await	JavaScript	Medium	2 mins	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Bitcoin prices Axios Promises	JavaScript	Easy	2 mins	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	My Module Scope	JavaScript	Medium	2 mins	Solve
What will the output of the following JavaScript code be?
	Promise Resolve Promises Async-Await	JavaScript	Medium	2 mins	Solve
What does the following code output?
	Throw, Try, Async Promises Async-Await	JavaScript	Easy	2 mins	Solve
What does the following JS code output?

Reason #4

1200+ customers in 75 countries

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!

Brandon Lee, Head of People, Love, Bonito

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment D3.JS Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the D3.JS Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & benchmarks

Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring

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About D3.js Developer Roles

D3 is a JavaScript library and framework for visualising data. D3 visualises data and graphical components by connecting them to the Document Object Model. D3 associates (binds) the data (what you want to see) to the DOM. This enables the user to modify, update, or add to the DOM.

D3. js engineers are skilled in front-end web programming and data science. They can assist you in creating interactive bar graphs, scatter plots, and other statistical visuals. They may also use data binding to connect data to page components to construct data-driven apps.

Typical D3.js Developer responsibilities include:

Construct interactive and dynamic data visualisations, scatter plots, and other statistical visuals
Assemble data-driven apps by binding data to page components
Convert complex data into dynamic graphics that can be seen in web browsers
Manage the document object model and work with existing technologies
Handle complicated data management responsibilities
Work cross-functionally to generate high-quality solutions

What roles can I use the D3.JS Test for?

D3 JS Developer
D3.JS Expert

What topics are covered in the D3.JS Online Test?

JavaScript Library

Scalable Vector Graphics

SVG

CSS3 Selectors

DOM Elements

Quantitative Scales, Ordinal Scales, Linear Scales, Identity Scales, Power and Logarithmic Scales

Scales

Slider

Domain

Path Data Generator

Virtual Enter Selection

Axis Component

Group Element

Transitions

Parsed Rows

Data Binding

Stacked Chart

Zoom Modes

Data-Driven Documents

DOM Manipulation

Declarative Programming Approach

Built-in ELement Inspector

Voronoi Diagram

Data Driven Events

Simple Axis

High Charts

Backward Compatibility

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View sample scorecard

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.

85%

reduction in screening time

View Full Case Study

FAQs

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

Non-googleable questions
IP proctoring
Web proctoring
Webcam proctoring
Plagiarism detection
Secure browser

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.