HTML/CSS, JavaScript, Python, and SQL Online Test

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The HTML/CSS, JavaScript, Python, and SQL online test assesses candidates' knowledge across the whole Web stack from HTML, CSS, and JavaScript on the Web front-end over Python on the back-end to SQL for data access.

It's an ideal test for pre-employment screening. A good full stack Python developer needs to be able to use a wide range of technologies.

This online test requires candidates to solve coding problems and find and fix bugs in multiple technologies.

Recommended Job Roles
Full-Stack Developer
JavaScript Developer
Python Developer
SQL Developer
Web Developer
Sample Candidate Report

Sample Free Questions



JavaScript Error handling Language Public

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.



SQL Aggregation Select Public

Given the following data definition, write a query that returns the number of students whose first name is John. String comparisons should be case sensitive.

TABLE students
   firstName VARCHAR(30) NOT NULL,
   lastName VARCHAR(30) NOT NULL



HTML/CSS Borders Element size Styling Public

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

File Owners


Python Dictionary Public

Implement a group_by_owners function that:

  • Accepts a dictionary containing the file owner name for each file name.
  • Returns a dictionary containing a list of file names for each owner name, in any order.

For example, for dictionary {'Input.txt': 'Randy', '': 'Stan', 'Output.txt': 'Randy'} the group_by_owners function should return {'Randy': ['Input.txt', 'Output.txt'], 'Stan': ['']}.

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Premium Questions

The premium question library contains our unique, hand-crafted questions. We offer a refund if you find any of them answered online.

Filter, Document Store, Positive Numbers, Links, Function Wrapper, Double, Truthy Expressions, Roads, Word Count, Is Alpha, Word Count, New Folder, Log Patch, Shipping, Loading Bar, Ingredients, Read First Line, Read Write Execute, Log Patch, Segment, Hobbies, A Tag, Ad, Addition, Article Style, ATM Locations, Authors, Autocomplete, Baby Names, Ban Users, Bank Branches, Bookmark, Category Tree, Chain Link, Cheapest Product, Christmas Tree, Cities, Confirm, Countries, Date Transform, Developers, Editor, Employee Manager, Format Table, Height, Hide Button, Hospital Patients, Index Performance, Menu Items, Merge Stock Index, Movies, Movies Live, Projects, Rectangles, Restaurant Menu, Retirees, Sales, SMS Messages, Student Activities, Tasks, Transactions, Youngest Child, Keywords, Label Color, Link, Loading, Log Parser, Log Parser, Logo, Paragraph, Paragraph, Product Rating, Products, Products, Row Appender, Scale Font Size, Share Button, Shirts, Snapshot, Timesheet, Upload, Username, Username, Vectors, Warehouse, Widgets, Language Teacher, Manager Sales, Delete Orders, Timer, Screen, Email Tables, Average Salary, Movie Genres, Auto Show, Ice Cream Flavors, Poll, Book Sale, Moving Total, Breakfast Menu, Reward Points, Greeter, Tuple Slice, Unique Product, Internal Nodes, Paper Strip, Kilometer Converter, Needle, Array Search, Department Report, Veterinarian, Medical Record, Segment, Date Transform, Numbers to Text, Cargo Ship, Unique Numbers, Max Sum, Hobbies, Crop Ratio, iframe, TestDome Logo, Post Comment, Cards, Reorder, Validation, Table of Names, Blog, Screen Reader, Data Entry, Student Rankings, Welfare Organization, Student Max Score
JavaScript Arrays Python Bug fixing Language Closures HTML/CSS CSS selectors Styling Exceptions DOM manipulation Event handling SQL Conditions Views Strings List comprehension Monkey patching Arithmetic HTML5 Subqueries Update Iteration Attribute manipulation Element spacing CSS advanced Element size Constraints Create table Database schema Select Create index Performance tuning Flexbox Positioning Alter table Bookmarks Elements and attributes Dictionary Linked list Aggregation Fonts Dialog box Ordering Regex Left join Objects Asynchronous calls Indexes Union Group by Insert Joins Hyperlink Animation Serialization XML JSON Sorting Content manipulation Forms Tables Inheritance OOP CTE Delete Callback Classes ECMAScript 2015 Borders Inline styles SQL CASE Responsive design Algorithmic thinking Set Selectors Tuples Lists Tree Method overriding Stream Recursion Queue Named tuple Integer division IFrame CSS layout Semantic tags Accessibility
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