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

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

It's an ideal test for pre-employment screening. A good full stack Java 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 Java as the programming language.

Recommended Job Roles
Full-Stack Developer
Java Developer
JavaScript 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

Semantics

7min
  -  
Easy  
  -  
CODE

HTML/CSS HTML5 Public

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.

Merge Names

10min
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Easy  
  -  
CODE

Java Arrays Public

Implement the uniqueNames method. When passed two arrays of names, it will return an array containing the names that appear in either or both arrays. The returned array should have no duplicates.

For example, calling MergeNames.uniqueNames(new String[]{'Ava', 'Emma', 'Olivia'}, new String[]{'Olivia', 'Sophia', 'Emma'}) should return an array containing Ava, Emma, Olivia, and Sophia in any order.

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Questions
Link, Editor, Utilities, Filter, Stopwatch, Runner, Movies, Index Performance, Poll, Rectangles, Blog, Document Store, Read Write Execute, Needle, Log Parser, Label Color, Height, Widgets, Driver Exam, Positive Numbers, Logo, Crop Ratio, Article Style, Programmer Teacher, Retirees, Chicken, Share Button, Ad, Authors, Countries, Employee Manager, Merge Stock Index, Paragraph, Paragraph, Post Comment, Row Appender, Username, Keywords, Chain Link, Hobbies, Hobbies, Read First Line, Node, Cheapest Product, Links, Vectors, Username, Function Wrapper, Shipping, Confirm, Movies Live, Double, Reorder, Hide Button, Racer, Truthy Expressions, Stack to List, Addition, ATM Locations, Bookmark, Christmas Tree, Department Report, Developers, iframe, Delete Orders, Product Rating, Products, Restaurant Menu, Roads, Sales, Shirts, Snapshot, Snapshot, Student Activities, Table of Names, Transactions, Warehouse, Word Count, Projects, Date Transform, Baby Names, Loading, Segment, Log Parser, Date Transform, Cards, Youngest Child, Format Table, Breakfast Menu, Cities, Screen Reader, Scale Font Size, New Folder, Internal Nodes, Moving Total, Entry, Unique Numbers, Remove Repetitions, Max Sum, Unique Name, Friend, Paper Strip, Log Patch, Stories, Train, Platformer, Timesheet, Segment, Snow Storm, Tasks, Loading Bar, Weighted Average, Validation, Upload, Ingredients, Autocomplete, Test Results, Bank Branches, Hospital Patients, Menu Items, Ban Users, Product, Document Counter, Shining Star, Unloading Trucks, Screen, A Tag, SMS Messages, Shelf, Array Search, Rare
Skills
HTML/CSS HTML attributes Java OOP JavaScript Arrays Closures Bug fixing Memory management SQL Aggregation Subqueries Indexes Conditions HTML5 Semantic tags Language Arithmetic Strings Stream Serialization CSS selectors Positioning Exceptions Insertion Styling Joins Union DOM manipulation Event handling Data structures Iteration Searching Multithreading Algorithmic thinking CSS Advanced Constraints Database Schema Delete Sorting Update Views Animation Selectors Accessibility Graphs Monkey Patching Dynamic programming Tables Refactoring Performance tuning TDD Classes ECMAScript 2015 Test case design Recursion
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