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

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

A new Figma course has dropped!

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

Costi Khamis

Member Since June 13, 2014

12,061

Total Points

•
3,548

JavaScript

3548 pts
Achievements

0 pts
Forum
•
2,433

Android

2433 pts
Achievements

0 pts
Forum
•
1,633

Java

1633 pts
Achievements

0 pts
Forum
•
1,133

HTML

1133 pts
Achievements

0 pts
Forum
•
861

Databases

861 pts
Achievements

0 pts
Forum
•
767

CSS

767 pts
Achievements

0 pts
Forum
•
257

Development Tools

257 pts
Achievements

0 pts
Forum
•
239

C#

239 pts
Achievements

0 pts
Forum
•
239

Digital Literacy

239 pts
Achievements

0 pts
Forum
•
238

Design

238 pts
Achievements

0 pts
Forum
•
2

AI

2 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.

142 Achievements

Achievement
Adding the Game Logic

Object-Oriented JavaScript: Challenge

Achieved
Jul 2, 2023
Achievement
Making the Game Interactive

Object-Oriented JavaScript: Challenge

Achieved
Jul 2, 2023
Achievement
Rendering the Game

Object-Oriented JavaScript: Challenge

Achieved
Jul 2, 2023
Achievement
Building Constructor Methods and Generating Objects

Object-Oriented JavaScript: Challenge

Achieved
Jul 2, 2023
Achievement
Introducing 'Four in a Row'

Object-Oriented JavaScript: Challenge

Achieved
Jul 2, 2023
Achievement
Getters and Setters

Object-Oriented JavaScript

Achieved
Jun 29, 2023
Achievement
Working with Classes in JavaScript

Object-Oriented JavaScript

Achieved
Jun 29, 2023
Achievement
Object Basics

Object-Oriented JavaScript

Achieved
Jun 2, 2023
Achievement
Introduction to Object-Oriented JavaScript

Object-Oriented JavaScript

Achieved
Jun 2, 2023
Achievement
Exploring Async/Await

Asynchronous Programming with JavaScript

Achieved
Jun 1, 2023
Achievement
Understanding Promises

Asynchronous Programming with JavaScript

Achieved
Jun 1, 2023
Achievement
Asynchronous JavaScript with Callbacks

Asynchronous Programming with JavaScript

Achieved
Jun 1, 2023
Achievement
What is Asynchronous Programming?

Asynchronous Programming with JavaScript

Achieved
Jun 1, 2023
Achievement
Programming AJAX

AJAX Basics

Achieved
Jun 1, 2023
Achievement
AJAX Concepts

AJAX Basics

Achieved
Jun 1, 2023
Achievement
Traversing the DOM

Interacting with the DOM

Achieved
May 31, 2023
Achievement
Responding to User Interaction

Interacting with the DOM

Achieved
May 29, 2023
Achievement
Making Changes to the DOM

JavaScript and the DOM

Achieved
May 29, 2023
Achievement
Getting a Handle on the DOM

JavaScript and the DOM

Achieved
May 29, 2023
Achievement
The Browser Environment

JavaScript and the DOM

Achieved
May 28, 2023
Achievement
JavaScript Tools and Workflows

The Landscape of JavaScript

Achieved
May 28, 2023
Achievement
JavaScript is Everywhere

The Landscape of JavaScript

Achieved
May 28, 2023
Achievement
Loop Through Objects

JavaScript Objects

Achieved
May 28, 2023
Achievement
Object Basics

JavaScript Objects

Achieved
May 28, 2023
Achievement
Multidimensional Arrays

JavaScript Arrays

Achieved
May 28, 2023
Achievement
Loop Through Arrays

JavaScript Arrays

Achieved
May 27, 2023
Achievement
Store Multiple Values in an Array

JavaScript Arrays

Achieved
May 27, 2023
Achievement
Working with 'for' Loops

JavaScript Loops

Achieved
May 27, 2023
Achievement
Simplify Repetitive Tasks with Loops

JavaScript Loops

Achieved
May 27, 2023
Achievement
Arrow Functions

JavaScript Functions

Achieved
May 27, 2023
Achievement
Pass Information Into Functions

JavaScript Functions

Achieved
May 26, 2023
Achievement
Create Reusable Code with Functions

JavaScript Functions

Achieved
May 26, 2023
Achievement
The Math Object

JavaScript Numbers

Achieved
May 26, 2023
Achievement
Working with Numbers

JavaScript Numbers

Achieved
May 26, 2023
Achievement
Making Decisions in Your Code with Conditional Statements

JavaScript Basics

Achieved
May 26, 2023
Achievement
Working With Strings

JavaScript Basics

Achieved
May 25, 2023
Achievement
Storing and Tracking Information with Variables

JavaScript Basics

Achieved
May 25, 2023
Achievement
Hello, JavaScript!

JavaScript Basics

Achieved
May 25, 2023
Achievement
File Uploads and Entity Updates in Spring + Hibernate

Spring with Hibernate

Achieved
Jun 14, 2021
Achievement
User Messages in Spring

Spring with Hibernate

Achieved
Jun 13, 2021
Achievement
Getting Started with CRUD in Spring + Hibernate

Spring with Hibernate

Achieved
Jun 11, 2021
Achievement
Data-Driven Application Design

Spring with Hibernate

Achieved
Jun 9, 2021
Achievement
Integrating Hibernate with Spring

Spring with Hibernate

Achieved
Jun 9, 2021
Achievement
Using the MVC Architecture with Spring

Spring Basics

Achieved
Jun 9, 2021
Achievement
Modeling, Storing, and Presenting Data with Spring

Spring Basics

Achieved
Jun 9, 2021
Achievement
Creating Spring Controllers and Thymeleaf Views

Spring Basics

Achieved
Jun 8, 2021
Achievement
Spring Components and Configuring Our App

Spring Basics

Achieved
Jun 8, 2021
Achievement
Setting Up Your Local Environment for Spring Development

Spring Basics

Achieved
Jun 8, 2021
Achievement
Bells and Whistles

Intro to Java Web Development with Spark

Achieved
Jun 7, 2021
Achievement
Diving into Web Development

Intro to Java Web Development with Spark

Achieved
Jun 6, 2021
Achievement
GET and POST Requests in a Browser

HTTP Basics

Achieved
Jun 5, 2021
Achievement
Introduction to HTTP

HTTP Basics

Achieved
Jun 5, 2021
Achievement
Persisting Data with Hibernate

Hibernate Basics

Achieved
Jun 5, 2021
Achievement
Getting Started with Hibernate

Hibernate Basics

Achieved
Jun 3, 2021
Achievement
Data Persistence & ORMs

Hibernate Basics

Achieved
Jun 3, 2021
Achievement
Writing Your Own Java Annotation

Java Annotations

Achieved
Jun 1, 2021
Achievement
Using Java's Built-In Annotations

Java Annotations

Achieved
Jun 1, 2021
Achievement
Handling Errors When Manipulating Data

Modifying Data with SQL

Achieved
Jun 1, 2021
Achievement
Deleting Data from a Database

Modifying Data with SQL

Achieved
Jun 1, 2021
Achievement
Updating Data in a Database

Modifying Data with SQL

Achieved
Jun 1, 2021
Achievement
Adding Data to a Database

Modifying Data with SQL

Achieved
Jun 1, 2021
Achievement
Date and Time Functions

Reporting with SQL

Achieved
Jun 1, 2021
Achievement
Aggregate and Numeric Functions

Reporting with SQL

Achieved
Jun 1, 2021
Achievement
Working with Text

Reporting with SQL

Achieved
May 31, 2021
Achievement
Ordering, Limiting and Paging Results

Reporting with SQL

Achieved
May 31, 2021
Achievement
Finding the Data You Want

SQL Basics

Achieved
May 31, 2021
Achievement
Getting Data from a Database

SQL Basics

Achieved
May 30, 2021
Achievement
Data, Databases and SQL

SQL Basics

Achieved
May 30, 2021
Achievement
Using Bootstrap Components

Bootstrap Basics

Achieved
Aug 15, 2019
Achievement
Responsive Layouts With the Bootstrap Grid

Bootstrap Basics

Achieved
Aug 14, 2019
Achievement
Getting to Know Bootstrap 4

Bootstrap Basics

Achieved
Aug 14, 2019
Achievement
JavaScript Numbers

JavaScript Basics (Retired)

Achieved
Jun 12, 2019
Achievement
JavaScript Variables

JavaScript Basics (Retired)

Achieved
Jun 11, 2019
Achievement
Fundamental Concepts

CSS Basics (2014)

Achieved
Jun 10, 2019
Achievement
Designing with the Latest Features

CSS Basics (2014)

Achieved
Jun 10, 2019
Achievement
Basic Layout

CSS Basics (2014)

Achieved
Jun 2, 2019
Achievement
The Box Model

CSS Basics (2014)

Achieved
Jun 2, 2019
Achievement
Understanding Values and Units

CSS Basics (2014)

Achieved
Apr 16, 2019
Achievement
Going Further with HTML

HTML Basics

Achieved
Apr 15, 2019
Achievement
Images, Text and Links

HTML Basics

Achieved
Apr 15, 2019
Achievement
Structuring Your Content

HTML Basics

Achieved
Apr 13, 2019
Achievement
Getting Started With HTML

HTML Basics

Achieved
Apr 13, 2019
Achievement
HTML: The Structural Foundation of Web Pages and Applications

Introduction to HTML and CSS (2016)

Achieved
Apr 12, 2019
Achievement
Make It Beautiful with CSS

Introduction to HTML and CSS (2016)

Achieved
Apr 12, 2019
Achievement
Adding a New Web Page

Introduction to HTML and CSS (2016)

Achieved
Apr 12, 2019
Achievement
Getting Familiar with HTML and CSS

Introduction to HTML and CSS (2016)

Achieved
Apr 12, 2019
Achievement
Hooking Up the Model to the View

Build a Weather App

Achieved
Mar 26, 2019
Achievement
Building the Weather UI

Build a Weather App

Achieved
Mar 25, 2019
Achievement
Working with JSON

Build a Weather App

Achieved
Mar 25, 2019
Achievement
Concurrency and Error Handling

Build a Weather App

Achieved
Mar 22, 2019
Achievement
Networking

Build a Weather App

Achieved
Mar 21, 2019
Achievement
Exploring an API

Build a Weather App

Achieved
Mar 21, 2019
Achievement
The Rest of the Story

Build an Interactive Story App

Achieved
Mar 13, 2019
Achievement
Finishing the User Interface

Build an Interactive Story App

Achieved
Mar 13, 2019
Achievement
The Model-View-Presenter Pattern

Build an Interactive Story App

Achieved
Mar 12, 2019
Achievement
Intents and Multiple Activities

Build an Interactive Story App

Achieved
Mar 10, 2019
Achievement
Tuning the User Interface

Build an Interactive Story App

Achieved
Mar 7, 2019
Achievement
User Input in Android

Build an Interactive Story App

Achieved
Mar 7, 2019
Achievement
Testing and Debugging

Build a Simple Android App with Java

Achieved
Mar 4, 2019
Achievement
Improving Our Code

Build a Simple Android App with Java

Achieved
Mar 4, 2019
Achievement
Basic Android Programming

Build a Simple Android App with Java

Achieved
Mar 3, 2019
Achievement
Creating the Screen Layout

Build a Simple Android App with Java

Achieved
Mar 3, 2019
Achievement
Getting Started with Android

Build a Simple Android App with Java

Achieved
Mar 2, 2019
Achievement
Selections with D3

D3.js

Achieved
Jul 11, 2017
Achievement
Testing and Debugging

Build a Simple Android App

Achieved
Jun 16, 2017
Achievement
Improving Our Code

Build a Simple Android App

Achieved
Jun 16, 2017
Achievement
Creating the Screen Layout

Build a Simple Android App

Achieved
Jun 16, 2017
Achievement
Basic Android Programming

Build a Simple Android App

Achieved
Jun 15, 2017
Achievement
Getting Started with Android

Build a Simple Android App

Achieved
Jun 13, 2017
Achievement
Perform

C# Basics (Retired)

Achieved
Dec 10, 2015
Achievement
Console I/O

C# Basics (Retired)

Achieved
Dec 9, 2015
Achievement
Prepare and Plan

C# Basics (Retired)

Achieved
Dec 9, 2015
Achievement
Basic Selectors

CSS Basics (2014)

Achieved
Jun 12, 2015
Achievement
Using your New Tools

Java Basics

Achieved
Jun 10, 2015
Achievement
Introducing JavaScript

JavaScript Basics (Retired)

Achieved
Jun 8, 2015
Achievement
Getting Started with CSS

CSS Basics (2014)

Achieved
May 31, 2015
Achievement
Structuring Tables

HTML Tables

Achieved
May 31, 2015
Achievement
Table Basics

HTML Tables

Achieved
May 31, 2015
Achievement
Choosing Options

HTML Forms

Achieved
May 31, 2015
Achievement
Organizing Forms

HTML Forms

Achieved
May 31, 2015
Achievement
Form Basics

HTML Forms

Achieved
May 30, 2015
Achievement
Getting Started with Java

Java Basics

Achieved
May 20, 2015
Achievement
Computer Languages

Computer Basics

Achieved
May 19, 2015
Achievement
Computer Basics

Computer Basics

Achieved
May 19, 2015
Achievement
Coding the Fun Facts

Build a Simple Android App (2014)

Achieved
Apr 25, 2015
Achievement
Basic Android Programming

Build a Simple Android App (2014)

Achieved
Apr 25, 2015
Achievement
Creating the Initial Screen Layout

Build a Simple Android App (2014)

Achieved
Apr 25, 2015
Achievement
Logo Design 101

Logo Design Basics

Achieved
Apr 25, 2015
Achievement
The Logo Sprint

Logo Design Basics

Achieved
Oct 19, 2014
Achievement
HTML First

How to Make a Website

Achieved
Oct 8, 2014
Achievement
Sharing a Website

How to Make a Website

Achieved
Oct 8, 2014
Achievement
Customizing Colors and Fonts

How to Make a Website

Achieved
Oct 5, 2014
Achievement
CSS: Cascading Style Sheets

How to Make a Website

Achieved
Oct 4, 2014
Achievement
Creating HTML Content

How to Make a Website

Achieved
Oct 4, 2014
Achievement
Beginning HTML and CSS

How to Make a Website

Achieved
Oct 4, 2014
Achievement
Getting Started with Android

Build a Simple Android App (2014)

Achieved
Sep 30, 2014
Achievement
Publishing on Google Play

Publish an Android App

Achieved
Sep 30, 2014
Achievement
Designing Characters and a Scene

Mobile Game Design

Achieved
Jun 18, 2014
Achievement
Introduction to Game Design

Mobile Game Design

Achieved
Jun 18, 2014
Achievement
Learning the Language

Build a Simple Android App (retired 2014)

Achieved
Jun 16, 2014
Achievement
Getting Started with Android

Build a Simple Android App (retired 2014)

Achieved
Jun 14, 2014
Achievement
Newbie

Achieved
Jun 13, 2014