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

Join our Live Career-Building Workshop: Launch Your Tech-Adjacent Career! ⭐ Register here!

🌟 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!

Sahan Balasuriya

United Arab Emirates

Just learning

10,115

Total Points

•
3,085

JavaScript

3085 pts
Achievements

0 pts
Forum
•
2,169

CSS

2169 pts
Achievements

0 pts
Forum
•
1,335

HTML

1335 pts
Achievements

0 pts
Forum
•
749

C#

749 pts
Achievements

0 pts
Forum
•
437

Java

437 pts
Achievements

0 pts
Forum
•
348

PHP

348 pts
Achievements

0 pts
Forum
•
229

Databases

229 pts
Achievements

0 pts
Forum
•
86

Python

86 pts
Achievements

0 pts
Forum
•
60

Development Tools

60 pts
Achievements

0 pts
Forum
•
46

Android

46 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.

116 Achievements

Achievement
Meet Python

Python Basics

Achieved
Sep 8, 2019
Achievement
Meet Objects

Java Objects

Achieved
Jul 6, 2018
Achievement
Perfecting the Prototype

Java Basics

Achieved
Jun 28, 2018
Achievement
Using your New Tools

Java Basics

Achieved
Jun 22, 2018
Achievement
Getting Started with Java

Java Basics

Achieved
Jun 20, 2018
Achievement
Encapsulation and Arrays

C# Objects

Achieved
Jun 16, 2018
Achievement
Inheritance

C# Objects

Achieved
Jun 14, 2018
Achievement
Complex Data Structures

Object-Oriented Swift

Achieved
Apr 12, 2018
Achievement
Adding Power to Functions

Functions in Swift

Achieved
Apr 9, 2018
Achievement
Functions in Swift

Functions in Swift

Achieved
Apr 7, 2018
Achievement
Control Flow With Conditional Statements

Swift Collections and Control Flow

Achieved
Apr 7, 2018
Achievement
Control Flow With Loops

Swift Collections and Control Flow

Achieved
Apr 5, 2018
Achievement
Dictionaries in Swift

Swift Collections and Control Flow

Achieved
Apr 3, 2018
Achievement
Introduction to Collections

Swift Collections and Control Flow

Achieved
Apr 3, 2018
Achievement
Swift Operators

Swift Basics

Achieved
Apr 2, 2018
Achievement
Methods

C# Objects

Achieved
Mar 31, 2018
Achievement
Object-Oriented Programming

C# Objects

Achieved
Mar 26, 2018
Achievement
jQuery and AJAX

AJAX Basics (retiring)

Achieved
Nov 15, 2017
Achievement
Programming AJAX

AJAX Basics (retiring)

Achieved
Nov 9, 2017
Achievement
AJAX Concepts

AJAX Basics (retiring)

Achieved
Oct 31, 2017
Achievement
DOM Traversal

Introduction to jQuery

Achieved
Oct 27, 2017
Achievement
DOM Manipulation

Introduction to jQuery

Achieved
Oct 24, 2017
Achievement
Events

Introduction to jQuery

Achieved
Oct 24, 2017
Achievement
Hello, jQuery!

Introduction to jQuery

Achieved
Oct 20, 2017
Achievement
Traversing the DOM

JavaScript and the DOM (Retiring)

Achieved
Oct 17, 2017
Achievement
Responding to User Interaction

Interacting with the DOM

Achieved
Oct 17, 2017
Achievement
Making Changes to the DOM

JavaScript and the DOM (Retiring)

Achieved
Oct 16, 2017
Achievement
Getting a Handle on the DOM

JavaScript and the DOM (Retiring)

Achieved
Oct 15, 2017
Achievement
The Browser Environment

JavaScript and the DOM (Retiring)

Achieved
Oct 13, 2017
Achievement
Finishing the Game

Introducing JavaScript

Achieved
Oct 12, 2017
Achievement
Introducing JavaScript

Introducing JavaScript

Achieved
Oct 12, 2017
Achievement
PHP on the Web

PHP Basics

Achieved
Aug 29, 2017
Achievement
Daily Exercise Program

PHP Basics

Achieved
Aug 26, 2017
Achievement
Unit Converter

PHP Basics

Achieved
Aug 23, 2017
Achievement
Getting to Know PHP

PHP Basics

Achieved
Aug 23, 2017
Achievement
Selectors - Beyond the Basics

CSS Selectors

Achieved
Jun 22, 2017
Achievement
Getting Started with Android

Build a Simple Android App

Achieved
Jun 20, 2017
Achievement
Swift Types

Swift Basics

Achieved
May 9, 2017
Achievement
An Introduction to Swift Programming

Swift Basics

Achieved
Apr 5, 2017
Achievement
How to Install WordPress on Your Computer

How to Install WordPress on Your Computer

Achieved
Mar 7, 2017
Achievement
What Is WordPress?

What Is WordPress?

Achieved
Mar 7, 2017
Achievement
Perfect

C# Basics (Retired)

Achieved
Jan 5, 2017
Achievement
Perform

C# Basics (Retired)

Achieved
Dec 18, 2016
Achievement
Console I/O

C# Basics (Retired)

Achieved
Nov 25, 2016
Achievement
Prepare and Plan

C# Basics (Retired)

Achieved
Nov 10, 2016
Achievement
Finding the Data You Want

SQL Basics

Achieved
Oct 2, 2016
Achievement
Getting Data from a Database

SQL Basics

Achieved
Aug 11, 2016
Achievement
Data, Databases and SQL

SQL Basics

Achieved
Aug 4, 2016
Achievement
Building a Layout with Flexbox

CSS Flexbox Layout

Achieved
Jun 28, 2016
Achievement
Flexbox Properties

CSS Flexbox Layout

Achieved
Jun 7, 2016
Achievement
Understanding Flexbox

CSS Flexbox Layout

Achieved
Apr 10, 2016
Achievement
Positioning Page Content

CSS Layout Basics

Achieved
Mar 22, 2016
Achievement
CSS Layout Project

CSS Layout Basics

Achieved
Mar 10, 2016
Achievement
Page Layout with the Float Property

CSS Layout Basics

Achieved
Mar 6, 2016
Achievement
Controlling Layout with CSS Display Modes

CSS Layout Basics

Achieved
Feb 27, 2016
Achievement
Getting Started with CSS Layout

CSS Layout Basics

Achieved
Feb 20, 2016
Achievement
Responsive Patterns

Responsive Layouts

Achieved
Oct 23, 2015
Achievement
Media Queries

Responsive Layouts

Achieved
Oct 20, 2015
Achievement
Responsive Theory

Responsive Layouts

Achieved
Oct 8, 2015
Achievement
Custom Media Players

HTML Video and Audio (Retired)

Achieved
Oct 2, 2015
Achievement
Captioning Video

HTML Video and Audio (Retired)

Achieved
Sep 30, 2015
Achievement
Media Basics

HTML Video and Audio (Retired)

Achieved
Sep 28, 2015
Achievement
Traversing and Manipulating the DOM with JavaScript

Interactive Web Pages with JavaScript

Achieved
Sep 18, 2015
Achievement
Selecting Elements and Adding Events with JavaScript

Interactive Web Pages with JavaScript

Achieved
Sep 11, 2015
Achievement
JavaScript and the DOM

Interactive Web Pages with JavaScript

Achieved
Sep 10, 2015
Achievement
Creating a Simple Drawing Application

jQuery Basics (2014)

Achieved
Sep 9, 2015
Achievement
Creating a Password Confirmation Form

jQuery Basics (2014)

Achieved
Sep 6, 2015
Achievement
Creating a Mobile Drop Down Menu

jQuery Basics (2014)

Achieved
Sep 4, 2015
Achievement
Creating a Simple Lightbox

jQuery Basics (2014)

Achieved
Aug 30, 2015
Achievement
Creating a Spoiler Revealer

jQuery Basics (2014)

Achieved
Aug 29, 2015
Achievement
Introduction to jQuery

jQuery Basics (2014)

Achieved
Aug 27, 2015
Achievement
JavaScript Objects

JavaScript Loops, Arrays and Objects

Achieved
Aug 26, 2015
Achievement
JavaScript Arrays

JavaScript Loops, Arrays and Objects

Achieved
Aug 23, 2015
Achievement
JavaScript Loops

JavaScript Loops, Arrays and Objects

Achieved
Aug 18, 2015
Achievement
JavaScript Functions

JavaScript Basics (Retired)

Achieved
Aug 13, 2015
Achievement
JavaScript Conditional Statements

JavaScript Basics (Retired)

Achieved
Aug 8, 2015
Achievement
JavaScript Numbers

JavaScript Basics (Retired)

Achieved
Jul 29, 2015
Achievement
JavaScript Variables

JavaScript Basics (Retired)

Achieved
Jul 25, 2015
Achievement
Introducing JavaScript

JavaScript Basics (Retired)

Achieved
Jul 17, 2015
Achievement
Fundamental Concepts

CSS Basics (2014)

Achieved
Jul 16, 2015
Achievement
Designing with the Latest Features

CSS Basics (2014)

Achieved
Jul 16, 2015
Achievement
Basic Layout

CSS Basics (2014)

Achieved
Jun 29, 2015
Achievement
The Box Model

CSS Basics (2014)

Achieved
Jun 19, 2015
Achievement
Understanding Values and Units

CSS Basics (2014)

Achieved
Jun 17, 2015
Achievement
Basic Selectors

CSS Basics (2014)

Achieved
Jun 14, 2015
Achievement
Getting Started with CSS

CSS Basics (2014)

Achieved
Jun 13, 2015
Achievement
Backgrounds and Borders

CSS Foundations

Achieved
Aug 31, 2014
Achievement
CSS Box Model

CSS Foundations

Achieved
Aug 18, 2014
Achievement
Text, Fonts, and Lists

CSS Foundations

Achieved
Aug 17, 2014
Achievement
Values and Units

CSS Foundations

Achieved
Aug 16, 2014
Achievement
Structuring Tables

HTML Tables

Achieved
Aug 16, 2014
Achievement
Table Basics

HTML Tables

Achieved
Aug 14, 2014
Achievement
Choosing Options

HTML Forms

Achieved
Aug 14, 2014
Achievement
Organizing Forms

HTML Forms

Achieved
Aug 13, 2014
Achievement
Form Basics

HTML Forms

Achieved
Aug 12, 2014
Achievement
Advanced Selectors

CSS Foundations

Achieved
Aug 9, 2014
Achievement
Selectors

CSS Foundations

Achieved
Jul 23, 2014
Achievement
Getting Started with CSS

CSS Foundations

Achieved
Jul 8, 2014
Achievement
Forms

HTML

Achieved
Jul 4, 2014
Achievement
Tables

HTML

Achieved
Jun 28, 2014
Achievement
Objects

HTML

Achieved
Jun 24, 2014
Achievement
Links

HTML

Achieved
Jun 22, 2014
Achievement
Lists

HTML

Achieved
Jun 21, 2014
Achievement
Text

HTML

Achieved
Jun 19, 2014
Achievement
Introduction

HTML

Achieved
Jun 16, 2014
Achievement
Debugging HTML and CSS Problems

How to Make a Website

Achieved
Jun 12, 2014
Achievement
Sharing a Website

How to Make a Website

Achieved
Jun 12, 2014
Achievement
Responsive Web Design and Testing

How to Make a Website

Achieved
Jun 11, 2014
Achievement
Adding Pages to a Website

How to Make a Website

Achieved
Jun 10, 2014
Achievement
Styling Web Pages and Navigation

How to Make a Website

Achieved
Jun 9, 2014
Achievement
Customizing Colors and Fonts

How to Make a Website

Achieved
Jun 8, 2014
Achievement
CSS: Cascading Style Sheets

How to Make a Website

Achieved
Jun 8, 2014
Achievement
Creating HTML Content

How to Make a Website

Achieved
Jun 7, 2014
Achievement
HTML First

How to Make a Website

Achieved
Jun 7, 2014
Achievement
Beginning HTML and CSS

How to Make a Website

Achieved
Jun 7, 2014
Achievement
Newbie

Achieved
Jun 7, 2014