Erik Krieg

Erik Krieg

Treehouse Moderator

Greater Toronto Area

Currently working as a full-stack developer for Prodigy Math Game.

Skills & Experience

  • Company

    Prodigy Game

  • Job Title

    Full-Stack Developer

  • Spoken Languages

    • English

404 Achievements

  • Dockerize a Web App
  • Managing Images and Containers
  • Building Images Using Dockerfiles
  • Fundamentals of Docker
  • Docker Use Cases
  • Putting it all Together
  • Actions, Dispatch and Reducers. Oh my!
  • Modularizing the React Scoreboard Application
  • Going Further with HTML
  • Images, Text and Links
  • Structuring Your Content
  • Getting Started With HTML
  • Finishing the Game
  • Introducing JavaScript
  • Security: Solutions
  • Security: Concerns
  • Python: Instant Objects
  • Covering Your Bases
  • Be Assertive!
  • What Is Testing?
  • Gettin' CRUD-y With It
  • Our Diary App
  • Meet Peewee
  • Python Regular Expressions
  • Timezones
  • Math Quiz App
  • Dates and Times
  • Buggy Logs
  • Cleaner Code
  • Dungeon Game 2
  • Python Sets
  • Python Tuples
  • Python Dictionaries
  • Python Slices
  • Python Lists
  • Letter Game App
  • Number Game App
  • Shopping List App
  • Logic in Python
  • Python Data Types
  • Python For Beginners
  • Getting Started with CSS Layout
  • Next Steps
  • Improving Our Tests
  • Behavior Driven Development with Mocha & Chai
  • Completing and Testing the API
  • Communicating with Mongo Through Mongoose
  • Modeling Data for the API
  • Building API Routes in Express
  • Build a Spreadsheet
  • Spreadsheet Best Practices
  • Spreadsheet Functions & Formulas
  • Getting Started With Spreadsheets
  • Introducing Spreadsheets
  • Building a REST Service
  • Express Middleware
  • Sessions and Cookies
  • User Registration and Login
  • What is Authentication?
  • Go Further With Mongo
  • Working With Collections
  • Understanding MongoDB
  • Doing More with Express
  • Serving Static Files in Express
  • Moving Beyond the Blog
  • Subqueries
  • Set Operations
  • Joining Table Data with SQL
  • Table Relationships
  • Database Keys
  • Database Normalization
  • Date and Time Functions
  • Aggregate and Numeric Functions
  • Working with Text
  • Ordering, Limiting and Paging Results
  • Handling Errors When Manipulating Data
  • Deleting Data from a Database
  • Updating Data in a Database
  • Adding Data to a Database
  • Finding the Data You Want
  • Getting Data from a Database
  • Data, Databases and SQL
  • Creating a Command Line Weather Application
  • Handling Errors in Node
  • Getting Data From an API With Node
  • Introduction to Node.js
  • Getting Started with Redux
  • Going Further with Routes
  • Navigating and Nesting Routes
  • Getting Started with React Router
  • Improving the Application Code
  • Editing and Filtering Names
  • Adding and Removing Names
  • Getting Started with Java
  • DOM Traversal
  • DOM Manipulation
  • Events
  • Hello, jQuery!
  • Traversing the DOM
  • Responding to User Interaction
  • Making Changes to the DOM
  • Introducing Unit Testing
  • Getting a Handle on the DOM
  • The Browser Environment
  • Classes
  • Objects and New Collection Types
  • The Cooler Parts of ES2015
  • Component Lifecycle
  • Designing Dataflow
  • Stateful Components
  • Thinking in Components
  • First Steps in React
  • ES2015 Basics
  • Learning activity: Experience Sampling
  • Getting Started with MongoDB
  • Improving Usability
  • Mobile Usability
  • Website Usability
  • What is Usability?
  • Scrum Artifacts
  • Scrum Events
  • Introducing Scrum
  • What is Agile?
  • Building a Layout with Flexbox
  • Flexbox Properties
  • Finding participants for your learning activity
  • Perform
  • Console I/O
  • Understanding Flexbox
  • Prepare and Plan
  • Improving your Gulp Workflow
  • Compile Sass with Gulp
  • Gulp your JavaScript workflow!
  • Welcome to Gulp.js
  • Advanced Directives
  • Concepts on Advanced Functions
  • Adding a New Web Page
  • Make It Beautiful with CSS
  • HTML: The Structural Foundation of Web Pages and Applications
  • Getting Familiar with HTML and CSS
  • DNS Basics
  • Graphic Basics
  • Get Involved in Open Source
  •  Create a Web Presence on GitHub
  •  Working on a Team
  • Working By Yourself
  • Hello, GitHub!
  • The Internet
  • WWW
  • Solving an Important Problem
  • Combine and Minify Assets
  • Optimize Assets
  • Measuring Performance
  • GET and POST Requests in a Browser
  • Introduction to HTTP
  • Getting the REST You Need
  • Using Templates with Express
  • The Request and Response Objects in Express
  • Updating and Uninstalling Packages with npm
  • Installing Packages with npm
  • What is npm?
  • Quiz Practice Project
  • Prototypal Inheritance
  • Constructor Functions & Prototypes
  • Securing and Maintaining a MySQL Database
  • SQL Calculating, Aggregating and Other Functions
  • Joining Relational Data Between Tables in SQL
  • Manipulating Schema with SQL
  • Creating Tables and Manipulating Data with SQL
  • Reading Data from Databases with SQL
  • Installing MySQL Server and MySQL Workbench
  • Introduction to Data, Databases and SQL
  • Developing Express Apps Like a Boss
  • Getting Started with Express
  • Introduction to Methods
  • Planning for Performance
  • Responsive Patterns
  • Media Queries
  • Responsive Theory
  • Debugging, Best Practices, and Production
  • Refactoring with Sass
  • Art Direction with the Picture Element
  • Image Delivery with Srcset and Sizes
  • Using a jQuery Carousel
  • Add a Sticky Navigation Bar
  • Introducing jQuery Plugins
  • Computer Languages
  • Computer Basics
  • HTTP Methods and Headers
  • Creating a Basic Template Engine in Node.js
  • Getting Started with Android
  • Handling Routes in Node.js
  • Creating a Simple Server in Node.js
  • Workspace Basics
  • Installing Sass and Setting up the Project
  • Interactive Visualizations
  • Styling and Scaling Data
  • Data Binding with D3
  • Selections with D3
  • Advanced Selectors
  • Going Further with Attribute Selectors and Pseudo-Classes
  • Selectors - Beyond the Basics
  • Working with Media Queries
  • CSS Animation Basics
  • Understanding CSS Transitions and Transforms
  • Understanding Flexbox and Multi-Column Layout
  • JavaScript Objects
  • JavaScript Arrays
  • JavaScript Loops
  • Getting Started with PDO
  • Exploring Ember
  • Ember Data
  • Design Foundations Final
  • Becoming a Problem Solver
  • Understanding Aesthetics
  • Installing Programs
  • Environment and Redirection
  • Workflows
  • Working With Remote Repositories
  • Merging
  • Branches
  • Getting Started With Git
  • Console Processes
  • Chrome DevTools Basics
  • Custom Media Players
  • Captioning Video
  • Media Basics
  • Building a Command Line Application
  • Introduction to Node.js
  • Models
  • Creating a Simple Drawing Application
  • Creating an SVG
  • Introduction to SVG
  • MASH JavaScript
  • MASH CSS
  • Fundamental Concepts
  • Designing with the Latest Features
  • Basic Layout
  • The Box Model
  • Understanding Values and Units
  • Basic Selectors
  • Getting Started with CSS
  • MASH HTML
  • Controllers
  • Routes and Templates
  • Getting Started with Ember.js
  • AJAX and APIs
  • jQuery and AJAX
  • Programming AJAX
  • Better SEO Through Tools
  • Why Version Control Matters
  • JavaScript Functions
  • JavaScript Conditional Statements
  • JavaScript Numbers
  • JavaScript Variables
  • Introducing JavaScript
  • Getting Started with WordPress
  • Treehouse Club - CSS
  • Treehouse Club - JavaScript
  • Traversing and Manipulating the DOM with JavaScript
  • Selecting Elements and Adding Events with JavaScript
  • JavaScript and the DOM
  • Advanced Variables, Mixins, Functions, and Placeholders
  • Getting Started with Advanced Sass
  • Advanced Sass Concepts
  • Speeding up Workflow With Sass
  • Variables, Mixins, and Extending Selectors
  • Getting Started with Sass
  • PHP Getting Started
  • Moving Forward with UX
  • Introduction to Front-End Frameworks
  • Structuring Tables
  • Table Basics
  • Welcome to the Treehouse Club
  • Marketing and Promotion
  • AJAX Concepts
  • Better SEO Through Code
  • Better SEO Through Content
  • Admin Color Schemes
  • Finding Good WordPress Plugins and Themes
  • Managing Comments on a WordPress Blog
  • Working with Media in WordPress Blogs
  • Posts and Pages in WordPress
  • Blogging with WordPress Overview
  • Choosing Options
  • Organizing Forms
  • Form Basics
  • Creating a Password Confirmation Form
  • Creating a Mobile Drop Down Menu
  • Creating a Simple Lightbox
  • Creating a Spoiler Revealer
  • Introduction to jQuery
  • Introduction to Design
  • Grid Layout
  • Flexbox Layout
  • Positioning Schemes
  • Float Layout
  • Launching a WordPress Site
  • Tools UXers Use
  • How UXers Think
  • What Do User Experience Designers Do?
  • What is User Experience (UX)?
  • Debugging HTML and CSS Problems
  • Sharing a Website
  • Responsive Web Design and Testing
  • Adding Pages to a Website
  • Styling Web Pages and Navigation
  • Customizing Colors and Fonts
  • CSS: Cascading Style Sheets
  • Creating HTML Content
  • WordPress and Forms
  • Extending WordPress Template Functionality
  • Converting Static HTML into WordPress Templates
  • HTML First
  • Beginning HTML and CSS
  • Introduction to SEO
  • Preparing to Code WordPress Templates
  • WordPress Theme Functions
  • WordPress Theme Templates
  • Content Strategy with WordPress
  • Display Modes
  • Local WordPress Development
  • WordPress Plugin Best Practices
  • Widgets and Custom Menus
  • Custom Post Types and Fields
  • Customizing WordPress Themes
  • WordPress Themes
  • Installing Wordpress
  • Finding Business
  • Creating Content
  • Introduction to Blogging
  • Integrating Validation Errors
  • Simple PHP Application: Wrapping Up The Project
  • Working with PHP Functions
  • Integrating With Paypal
  • Listing Inventory Items
  • Adding a Contact Form
  • Creating the Menu and Footer
  • Getting Started with PHP
  • Console Users and Permission
  • Moving Around in the Console
  • Video Marketing
  • Email Marketing
  • Search Engine Optimization
  • Usability Testing
  • Usability Basics
  • Social Media
  • Customizing Google Maps
  • Google Maps Integration
  • jQuery Plugins
  • Form Validation and Manipulation
  • Adding and Editing Content in WordPress
  • Configuring WordPress
  • Getting Started with WordPress
  • Introduction to jQuery
  • Exterminator
  • JavaScript Objects
  • JavaScript Functions
  • JavaScript Arrays
  • JavaScript Numbers
  • JavaScript Strings
  • Introduction Variables
  • Functions
  • Objects and Arrays
  • Control Structures
  • Basics
  • Color Theory
  • Principles
  • Elements
  • Web Apps
  • Websites
  • Introduction
  • Advanced Techniques
  • Responsive Design
  • Adaptive Design
  • Fluid Foundation
  • Introduction to Responsive Web Design
  • Website Basics
  • Media Queries
  • CSS Animations
  • Transitions and Transforms
  • Flexbox and Multi-Column Layout
  • Gradients
  • Web Typography
  • Backgrounds and Borders
  • CSS Box Model
  • Text, Fonts, and Lists
  • Values and Units
  • Advanced Selectors
  • Selectors
  • Getting Started with CSS
  • Forms
  • Tables
  • Objects
  • Links
  • Lists
  • Text
  • Introduction
  • Launching the Website
  • Styling Content
  • Creating a Website Structure
  • Text Editors and HTML
  • Website Basics
  • Newbie