Petar Zelenovic

Petar Zelenovic

Member Since February 5, 2015

11,356

Total Points

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

142 Achievements

  • Using Angular's Built-in Directives
  • Controllers and Scope
  • Getting Started with Angular
  • Doing More with Express
  • Serving Static Files in Express
  • Using Templates with Express
  • The Request and Response Objects in Express
  • Developing Express Apps Like a Boss
  • Getting Started with Express
  • Updating and Uninstalling Packages with npm
  • Installing Packages with npm
  • PHP Inheritance & Interfaces
  • PHP Properties & Methods
  • PHP Objects and Classes
  • PHP Internal Functions
  • PHP Returns & Closures
  • PHP Functions Basics
  • PHP Loops
  • PHP Conditionals
  • PHP Datatypes
  • PHP Data & Structure
  • PHP Getting Started
  • Interacting With Data From the Web
  • Simple Data Structures
  • What is npm?
  • HTTP Methods and Headers
  • Creating a Basic Template Engine in Node.js
  • Handling Routes in Node.js
  • Creating a Simple Server in Node.js
  • Responsive Patterns
  • Media Queries
  • Responsive Theory
  • Custom Media Players
  • Captioning Video
  • Media Basics
  • Building a Command Line Application
  • Introduction to Node.js
  • Quiz Practice Project
  • Prototypal Inheritance
  • Constructor Functions & Prototypes
  • Introduction to Methods
  • Introduction to Front-End Frameworks
  • AJAX and APIs
  • jQuery and AJAX
  • Programming AJAX
  • AJAX Concepts
  • Using a jQuery Carousel
  • Add a Sticky Navigation Bar
  • Introducing jQuery Plugins
  • Traversing and Manipulating the DOM with JavaScript
  • Structuring Tables
  • Table Basics
  • Selecting Elements and Adding Events with JavaScript
  • JavaScript and the DOM
  • Creating a Simple Drawing Application
  • Creating a Password Confirmation Form
  • Creating a Mobile Drop Down Menu
  • Creating a Simple Lightbox
  • Creating a Spoiler Revealer
  • Introduction to jQuery
  • Grid Layout
  • Flexbox Layout
  • Positioning Schemes
  • Float Layout
  • Display Modes
  • JavaScript Objects
  • JavaScript Arrays
  • JavaScript Loops
  • Choosing Options
  • Debugging, Best Practices, and Production
  • Refactoring with Sass
  • Organizing Forms
  • Form Basics
  • Advanced Sass Concepts
  • Speeding up Workflow With Sass
  • Variables, Mixins, and Extending Selectors
  • Installing Sass and Setting up the Project
  • Getting Started with Sass
  • JavaScript Functions
  • Fundamental Concepts
  • Designing with the Latest Features
  • Basic Layout
  • The Box Model
  • Understanding Values and Units
  • Basic Selectors
  • Getting Started with CSS
  • 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
  • HTML First
  • Beginning HTML and CSS
  • Introduction to Table Views
  • Closures in iOS
  • Closures and Closure Expressions
  • Functions as First Class Citizens
  • Creating Flexible Objects with Protocols
  • Protocols
  • Ruby Basics
  • JavaScript Conditional Statements
  • Displaying Our Weather Data
  • Data Modeling With Structures
  • Concurrency
  • Pulling Data From the Web
  • Refactoring Our Code (Swift)
  • Building the Master and Detail Views (Swift)
  • Building a Music Library and Playlists (Swift)
  • Using a Navigation Controller With Segues (Swift)
  • Working With Multiple View Controllers (Swift)
  • Deploying to a Device
  • Debugging Our App
  • Improving Our User Interface
  • Using a Data Model
  • Views and View Controllers
  • Getting Started with Xcode
  • Swift Value vs Reference Types
  • Swift Properties
  • Swift Inheritance
  • Swift Classes and Objects
  • Introduction to REST
  • Swift Structs and their Methods
  • Swift Structs
  • Swift Enums and their Methods
  • Swift Enums
  • Swift Optionals
  • Swift Parameters and Tuples
  • Swift Functions
  • Control Flow
  • Collections
  • Operators
  • Types
  • Variables and Constants
  • Fundamentals of C
  • Cocoapods
  • JavaScript Numbers
  • JavaScript Variables
  • Introducing JavaScript
  • Newbie