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

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

This online test requires candidates to solve coding problems, find and fix bugs in multiple technologies using Scala as the programming language.

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

Sample Free Questions

Ensure

3min
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Easy  
  -  
CODE

JavaScript 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.

Students

3min
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Easy  
  -  
CODE

SQL Aggregation 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
   id INTEGER PRIMARY KEY,
   firstName VARCHAR(30) NOT NULL,
   lastName VARCHAR(30) NOT NULL

Avatar

7min
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Easy  
  -  
CODE

HTML/CSS CSS selectors 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

Merge Names

10min
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Easy 
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CODE

Scala Vector Public New

Implement the uniqueNames function. When passed two vectors of names, it will return a vector containing the names that appear in either or both input vectors. The returned vector should have no duplicates.

For example, calling MergeNames.uniqueNames(Vector("Ava", "Emma", "Olivia"), Vector("Olivia", "Sophia", "Emma")) should return a vector containing Ava, Emma, Olivia, and Sophia in any order.

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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.

Questions
Link, Editor, Filter, Stopwatch, Movies, Index Performance, Poll, Rectangles, Blog, Label Color, Positive Numbers, Logo, Article Style, Retirees, Share Button, Ad, Authors, Countries, Employee Manager, Paragraph, Row Appender, Keywords, Cheapest Product, Links, Vectors, Function Wrapper, Confirm, Movies Live, Double, Hide Button, Truthy Expressions, ATM Locations, Bookmark, Christmas Tree, Developers, iframe, Delete Orders, Product Rating, Products, Restaurant Menu, Roads, Sales, Shirts, Snapshot, Student Activities, Table of Names, Transactions, Warehouse, Word Count, Projects, Baby Names, Loading, Log Parser, Cards, Youngest Child, Format Table, Breakfast Menu, Cities, Screen Reader, Scale Font Size, New Folder, Log Patch, Timesheet, Tasks, Loading Bar, Ingredients, Autocomplete, Bank Branches, Hospital Patients, Menu Items, Ban Users, Array Search, Validation, Height, SMS Messages, Data Entry, Email Tables, Student Max Score, TestDome Logo, Ice Cream Flavors, A Tag, Widgets, Upload, Reorder, Screen, Department Report, Post Comment, Merge Stock Index, Date Transform, Prefix, Weighted Average, Addition, Segment, Username, Hobbies, Language Teaching, Read First Line, Numbers To Text
Skills
HTML/CSS HTML attributes JavaScript Arrays Closures SQL Aggregation Subqueries Indexes Conditions HTML5 Semantic tags CSS selectors Insertion Positioning Styling Language Joins Strings DOM manipulation Arithmetic Searching Exceptions Event handling Constraints Database schema Bug fixing Delete Serialization Sorting Update Views Animation Selectors Accessibility Monkey patching Tables Performance tuning Recursion CSS layout Forms CSS basics HTML Classes ECMAScript 2015 Union Scala Collections Lazy Evaluation CSS advanced Iteration OOP
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