This HTML/CSS, JavaScript, Node.js, and SQL Online Test Separates Good From Bad Hires

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About the test

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

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

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

Sample public questions

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

HTML/CSS
Borders
Element Size
Styling
Easy
7 min
code
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.

JavaScript
Error Handling
Language
Easy
3 min
code
Public

Consider the following package.json for a Node.js application:

{
  "name": "skill-measure-app",
  "private": true,
  "version": "1.0.0",
  "main": "lib/main.js",
  "scripts": {
    "build": "npm run cleanup & npm run test & npm run publish",
    "cleanup": "rm -fr ./lib",
    "test": "jest",
    "publish": "npm publish lib"
  },
  "dependencies": {
     "jest": "^23.0.1",
     "custom-package": "file:../custom-package"
  }
}

Select all the correct statements.

Node.js
NPM
Easy
3 min
mca
Public

Given the following data definition, write a query that returns the number of students whose first name is John.

TABLE students
   id INTEGER PRIMARY KEY,
   firstName VARCHAR(30) NOT NULL,
   lastName VARCHAR(30) NOT NULL
SQL
Aggregation
Select
Easy
3 min
code
Public

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129 more premium HTML/CSS, JavaScript, Node.js, and SQL questions

  Positive Numbers,   Links,   Truthy Expressions,   Fahrenheit Converter,   Shopping Cart,   Ad,   Article Style,   Baby Names,   Cities,   Editor,   Format Table,   Keywords,   Label Color,   Loading,   Logo,   Shirts,   Upload,   Warehouse,   Widgets,   Weather Data,   iframe,   File Exists,   Retry Request,   Run Sequentially,   Max Sum,   Launch Time,   Stream Transform,   Function Wrapper,   Link,   Package Declaration,   Add Id,   Hash Bug,   Game Action,   Arrange Promises,   Log Parser,   Unique Numbers,   Load URL,   Photon Frequency,   Addition,   Trading Data Paging,   Color Codes,   Tax Calculator,   Bookmark,   Screen Reader,   Game Offer,   Bicycle Report,   Curious Leaf,   Gaming Console,   Travel Blog,   Confirm,   Blog,   Friend,   Roads,   Authors,   Autocomplete,   Ban Users,   Bank Branches,   Cheapest Product,   Countries,   Developers,   Hospital Patients,   Index Performance,   Menu Items,   Movies,   Projects,   Rectangles,   Restaurant Menu,   Retirees,   SMS Messages,   Poll,   Users and Accounts,   Matching Clothes,   Agents,   Sales,   Employee Manager,   Auto Show,   Delete Orders,   Welfare Organization,   Tasks,   Manager Sales,   Student Rankings,   Student Activities,   Youngest Child,   Movies Live,   Department Report,   Ingredients,   Average Salary,   Movie Genres,   Christmas Tree,   Timesheet,   Email Tables,   Data Entry,   Price List,   Ice Cream Flavors,   Memory Game,   TestDome Logo,   River Discharge,   ATM Locations,   New Folder,   Post Comment,   Row Appender,   Vectors,   Segment,   Special Actions,   Height,   Product Rating,   Validation,   Cards,   Array Search,   Screen,   Timer,   Username,   Snapshot,   Scale Font Size,   Products,   Paragraph,   Hide Button,   A Tag,   Hobbies,   Loading Bar,   Log Patch,   Double,   Table of Names,   Filter,   Transactions,   Reorder,   Share Button,   Merge Stock Index,   Date Transform.

Skills and topics tested

  • JavaScript
  • Closures
  • HTML/CSS
  • CSS Selectors
  • Styling
  • Language
  • Node.js
  • Modules
  • Events
  • Element Spacing
  • Flexbox
  • Positioning
  • Fonts
  • Elements and Attributes
  • HTML5
  • Animation
  • Forms
  • Asynchronous Programming
  • Hyperlink
  • IFrame
  • Async-Await
  • Promise
  • Algorithmic Thinking
  • Timing Events
  • JSON
  • Stream
  • Exceptions
  • NPM
  • Event Loop
  • Bug Fixing
  • Event Emitter
  • Serialization
  • XML
  • Dictionary
  • Ajax
  • HTTP
  • Arrays
  • CSS Advanced
  • Element Size
  • Pagination
  • Sorting
  • Associative Arrays
  • Classes
  • Objects
  • Bookmarks
  • Accessibility
  • CSS Basics
  • Tables
  • Responsive Design
  • UI
  • Dialog Box
  • Event Handling
  • Semantic Tags
  • Graphs
  • SQL
  • Conditions
  • Views
  • Select
  • Create Index
  • Database Schema
  • Performance Tuning
  • Alter Table
  • Constraints
  • Create Table
  • Aggregation
  • Subqueries
  • Ordering
  • Indexes
  • Group by
  • Update
  • Insert
  • Joins
  • Left Join
  • Right Join
  • Delete
  • SQL CASE
  • Union
  • CTE
  • Borders
  • Inline Styles
  • Selectors
  • Strings
  • CSS Layout
  • Database Normalization
  • Content Manipulation
  • DOM Manipulation
  • Arithmetic
  • Iteration
  • Attribute Manipulation
  • Recursion
  • ECMAScript 2015
  • Asynchronous Calls
  • Callback
  • Regex
  • Monkey Patching

For job roles

  • Full-Stack Developer
  • JavaScript Developer
  • Node.js Developer
  • SQL Developer
  • Web Developer

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