🤑 Join the Treehouse affiliate program and earn 25% commission!

🌟 Dreaming of a bright future? 🎓 Ask about the Treehouse Scholarship program! 🚀

Curious which AI tools Treehouse developers love? ⚙️ Check them out!

🫡 Treehouse for Military offers discounts to Veterans, service members and their families!

Dekin O'Sullivan

Member Since March 11, 2015

10,749

Total Points

•
2,652

JavaScript

2636 pts
Achievements

16 pts
Forum
•
2,266

CSS

2265 pts
Achievements

1 pts
Forum
•
1,965

HTML

1965 pts
Achievements

0 pts
Forum
•
1,224

Development Tools

1224 pts
Achievements

0 pts
Forum
•
1,038

PHP

1038 pts
Achievements

0 pts
Forum
•
601

Design

601 pts
Achievements

0 pts
Forum
•
282

Computer Science

282 pts
Achievements

0 pts
Forum
•
229

Databases

229 pts
Achievements

0 pts
Forum
•
114

Digital Literacy

114 pts
Achievements

0 pts
Forum

Points are earned whenever you take an important action on Treehouse.
Learn more about when and how points are earned.

131 Achievements

Achievement
Adding a New Web Page

Introduction to HTML and CSS (2016)

Achieved
Jul 11, 2019
Achievement
Make It Beautiful with CSS

Introduction to HTML and CSS (2016)

Achieved
Jul 4, 2019
Achievement
HTML: The Structural Foundation of Web Pages and Applications

Introduction to HTML and CSS (2016)

Achieved
Jun 28, 2019
Achievement
Getting Familiar with HTML and CSS

Introduction to HTML and CSS (2016)

Achieved
Jun 25, 2019
Achievement
Exploring Arrays

Introduction to Data Structures

Achieved
Oct 17, 2018
Achievement
Recursion and Space Complexity

Introduction to Algorithms

Achieved
Sep 28, 2018
Achievement
Algorithms in Code

Introduction to Algorithms

Achieved
Sep 20, 2018
Achievement
Time Complexity

Introduction to Algorithms

Achieved
Sep 7, 2018
Achievement
Playing a Counting Game

Introduction to Algorithms

Achieved
Aug 30, 2018
Achievement
PHP Inventory

Build a Basic PHP Website (2018)

Achieved
Jul 31, 2018
Achievement
PHP Includes

Build a Basic PHP Website (2018)

Achieved
Jun 27, 2018
Achievement
PHP Internal Functions

PHP Functions

Achieved
Jun 12, 2018
Achievement
PHP Returns & Closures

PHP Functions

Achieved
Jun 8, 2018
Achievement
PHP Functions Basics

PHP Functions

Achieved
Jun 5, 2018
Achievement
PHP Loops

PHP Arrays and Control Structures

Achieved
Jun 4, 2018
Achievement
PHP Arrays

PHP Arrays and Control Structures

Achieved
Oct 17, 2017
Achievement
PHP Conditionals

PHP Arrays and Control Structures

Achieved
Oct 6, 2017
Achievement
PHP on the Web

PHP Basics

Achieved
Sep 29, 2017
Achievement
Daily Exercise Program

PHP Basics

Achieved
Sep 22, 2017
Achievement
Unit Converter

PHP Basics

Achieved
Sep 13, 2017
Achievement
Getting to Know PHP

PHP Basics

Achieved
Sep 12, 2017
Achievement
Creating an SVG

SVG Basics

Achieved
Sep 11, 2017
Achievement
Introduction to SVG

SVG Basics

Achieved
Sep 7, 2017
Achievement
Combine and Minify Assets

Introduction to Front End Performance Optimization

Achieved
Aug 23, 2017
Achievement
Optimize Assets

Introduction to Front End Performance Optimization

Achieved
Aug 22, 2017
Achievement
Measuring Performance

Introduction to Front End Performance Optimization

Achieved
Aug 17, 2017
Achievement
Planning for Performance

Introduction to Front End Performance Optimization

Achieved
Aug 17, 2017
Achievement
Workflows

Git Basics

Achieved
Aug 15, 2017
Achievement
Working With Remote Repositories

Git Basics

Achieved
Aug 8, 2017
Achievement
Merging

Git Basics

Achieved
Aug 2, 2017
Achievement
Branches

Git Basics

Achieved
Jul 27, 2017
Achievement
Getting Started With Git

Git Basics

Achieved
Jul 24, 2017
Achievement
Why Version Control Matters

Git Basics

Achieved
Jul 17, 2017
Achievement
Installing Programs

Console Foundations

Achieved
Jul 14, 2017
Achievement
Environment and Redirection

Console Foundations

Achieved
Jul 12, 2017
Achievement
Console Processes

Console Foundations

Achieved
Jul 6, 2017
Achievement
Console Users and Permission

Console Foundations

Achieved
Jul 5, 2017
Achievement
Moving Around in the Console

Console Foundations

Achieved
Jun 27, 2017
Achievement
Captioning Video

HTML Video and Audio

Achieved
Jun 13, 2017
Achievement
Media Basics

HTML Video and Audio

Achieved
Jun 8, 2017
Achievement
Chrome DevTools Basics

Website Optimization

Achieved
May 29, 2017
Achievement
Web Apps

Accessibility

Achieved
Jan 4, 2017
Achievement
Websites

Accessibility

Achieved
Dec 26, 2016
Achievement
Introduction

Accessibility

Achieved
Dec 8, 2016
Achievement
Quiz Practice Project

Object-Oriented JavaScript (2015)

Achieved
Dec 2, 2016
Achievement
Prototypal Inheritance

Object-Oriented JavaScript (2015)

Achieved
Nov 30, 2016
Achievement
Constructor Functions & Prototypes

Object-Oriented JavaScript (2015)

Achieved
Nov 28, 2016
Achievement
Introduction to Methods

Object-Oriented JavaScript (2015)

Achieved
Nov 13, 2016
Achievement
Building Forms with Bootstrap

Bootstrap 4 Basics (Retired)

Achieved
Nov 7, 2016
Achievement
Using Bootstrap Components

Bootstrap 4 Basics (Retired)

Achieved
Sep 4, 2016
Achievement
Responsive Layouts with the Bootstrap Grid

Bootstrap 4 Basics (Retired)

Achieved
Sep 3, 2016
Achievement
Getting to Know Bootstrap 4

Bootstrap 4 Basics (Retired)

Achieved
Aug 26, 2016
Achievement
Building a Layout with Flexbox

CSS Flexbox Layout

Achieved
Aug 21, 2016
Achievement
Flexbox Properties

CSS Flexbox Layout

Achieved
Aug 13, 2016
Achievement
Understanding Flexbox

CSS Flexbox Layout

Achieved
Aug 4, 2016
Achievement
Positioning Page Content

CSS Layout Basics

Achieved
Aug 1, 2016
Achievement
CSS Layout Project

CSS Layout Basics

Achieved
Jul 24, 2016
Achievement
Page Layout with the Float Property

CSS Layout Basics

Achieved
Jul 23, 2016
Achievement
Controlling Layout with CSS Display Modes

CSS Layout Basics

Achieved
Jul 21, 2016
Achievement
Getting Started with CSS Layout

CSS Layout Basics

Achieved
Jul 16, 2016
Achievement
Programming AJAX

AJAX Basics (retiring)

Achieved
Jul 14, 2016
Achievement
AJAX and APIs

AJAX Basics (retiring)

Achieved
Jul 14, 2016
Achievement
jQuery and AJAX

AJAX Basics (retiring)

Achieved
Jul 2, 2016
Achievement
AJAX Concepts

AJAX Basics (retiring)

Achieved
Mar 20, 2016
Achievement
Responsive Patterns

Responsive Layouts

Achieved
Mar 17, 2016
Achievement
Media Queries

Responsive Layouts

Achieved
Mar 14, 2016
Achievement
Responsive Theory

Responsive Layouts

Achieved
Mar 13, 2016
Achievement
Custom Media Players

HTML Video and Audio (Retired)

Achieved
Mar 12, 2016
Achievement
Captioning Video

HTML Video and Audio (Retired)

Achieved
Mar 10, 2016
Achievement
Media Basics

HTML Video and Audio (Retired)

Achieved
Mar 8, 2016
Achievement
Traversing and Manipulating the DOM with JavaScript

Interactive Web Pages with JavaScript

Achieved
Mar 5, 2016
Achievement
Selecting Elements and Adding Events with JavaScript

Interactive Web Pages with JavaScript

Achieved
Jan 22, 2016
Achievement
JavaScript and the DOM

Interactive Web Pages with JavaScript

Achieved
Jan 11, 2016
Achievement
Finding the Data You Want

SQL Basics

Achieved
Jan 10, 2016
Achievement
Getting Data from a Database

SQL Basics

Achieved
Jan 2, 2016
Achievement
Data, Databases and SQL

SQL Basics

Achieved
Dec 30, 2015
Achievement
Creating a Simple Drawing Application

jQuery Basics (2014)

Achieved
Dec 27, 2015
Achievement
Creating a Password Confirmation Form

jQuery Basics (2014)

Achieved
Dec 21, 2015
Achievement
Creating a Mobile Drop Down Menu

jQuery Basics (2014)

Achieved
Dec 11, 2015
Achievement
Creating a Simple Lightbox

jQuery Basics (2014)

Achieved
Dec 9, 2015
Achievement
Creating a Spoiler Revealer

jQuery Basics (2014)

Achieved
Nov 29, 2015
Achievement
Introduction to jQuery

jQuery Basics (2014)

Achieved
Nov 19, 2015
Achievement
JavaScript Objects

JavaScript Loops, Arrays and Objects

Achieved
Nov 16, 2015
Achievement
JavaScript Arrays

JavaScript Loops, Arrays and Objects

Achieved
Oct 25, 2015
Achievement
JavaScript Loops

JavaScript Loops, Arrays and Objects

Achieved
Oct 22, 2015
Achievement
JavaScript Functions

JavaScript Basics (Retired)

Achieved
Oct 19, 2015
Achievement
JavaScript Conditional Statements

JavaScript Basics (Retired)

Achieved
Oct 16, 2015
Achievement
JavaScript Numbers

JavaScript Basics (Retired)

Achieved
Oct 13, 2015
Achievement
JavaScript Variables

JavaScript Basics (Retired)

Achieved
Oct 8, 2015
Achievement
Introducing JavaScript

JavaScript Basics (Retired)

Achieved
Oct 5, 2015
Achievement
Slices & Save for Web

Photoshop Foundations

Achieved
Oct 2, 2015
Achievement
Vector Shapes

Photoshop Foundations

Achieved
Oct 2, 2015
Achievement
Type Tools

Photoshop Foundations

Achieved
Oct 1, 2015
Achievement
Masks Basics

Photoshop Foundations

Achieved
Sep 30, 2015
Achievement
Layer Basics

Photoshop Foundations

Achieved
Sep 29, 2015
Achievement
Workspace Basics

Photoshop Foundations

Achieved
Sep 29, 2015
Achievement
Introduction to Design

Design Foundations

Achieved
Sep 27, 2015
Achievement
Design Foundations Final

Design Foundations

Achieved
Sep 27, 2015
Achievement
Becoming a Problem Solver

Design Foundations

Achieved
Sep 27, 2015
Achievement
Grid Layout

CSS Layout Techniques

Achieved
Sep 23, 2015
Achievement
Flexbox Layout

CSS Layout Techniques

Achieved
Sep 22, 2015
Achievement
Positioning Schemes

CSS Layout Techniques

Achieved
Sep 22, 2015
Achievement
Float Layout

CSS Layout Techniques

Achieved
Sep 22, 2015
Achievement
Display Modes

CSS Layout Techniques

Achieved
Jul 26, 2015
Achievement
Structuring Tables

HTML Tables

Achieved
Jul 19, 2015
Achievement
Table Basics

HTML Tables

Achieved
Jul 19, 2015
Achievement
Choosing Options

HTML Forms

Achieved
Jul 18, 2015
Achievement
Organizing Forms

HTML Forms

Achieved
Jul 6, 2015
Achievement
Form Basics

HTML Forms

Achieved
Jul 5, 2015
Achievement
Advanced Selectors

CSS Selectors

Achieved
Jul 4, 2015
Achievement
Going Further with Attribute Selectors and Pseudo-Classes

CSS Selectors

Achieved
Jun 28, 2015
Achievement
Selectors - Beyond the Basics

CSS Selectors

Achieved
Jun 14, 2015
Achievement
Fundamental Concepts

CSS Basics (2014)

Achieved
Jun 8, 2015
Achievement
Designing with the Latest Features

CSS Basics (2014)

Achieved
Jun 7, 2015
Achievement
Basic Layout

CSS Basics (2014)

Achieved
May 24, 2015
Achievement
The Box Model

CSS Basics (2014)

Achieved
May 17, 2015
Achievement
Understanding Values and Units

CSS Basics (2014)

Achieved
May 13, 2015
Achievement
Basic Selectors

CSS Basics (2014)

Achieved
May 5, 2015
Achievement
Getting Started with CSS

CSS Basics (2014)

Achieved
Apr 30, 2015
Achievement
Debugging HTML and CSS Problems

How to Make a Website

Achieved
Apr 26, 2015
Achievement
Sharing a Website

How to Make a Website

Achieved
Apr 17, 2015
Achievement
Responsive Web Design and Testing

How to Make a Website

Achieved
Apr 16, 2015
Achievement
Adding Pages to a Website

How to Make a Website

Achieved
Apr 13, 2015
Achievement
Styling Web Pages and Navigation

How to Make a Website

Achieved
Apr 4, 2015
Achievement
Customizing Colors and Fonts

How to Make a Website

Achieved
Apr 3, 2015
Achievement
Computer Basics

Computer Basics

Achieved
Mar 29, 2015
Achievement
CSS: Cascading Style Sheets

How to Make a Website

Achieved
Mar 23, 2015
Achievement
Creating HTML Content

How to Make a Website

Achieved
Mar 19, 2015
Achievement
HTML First

How to Make a Website

Achieved
Mar 13, 2015
Achievement
Beginning HTML and CSS

How to Make a Website

Achieved
Mar 11, 2015
Achievement
Newbie

Achieved
Mar 11, 2015