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Zdenek Lhotka

Prague, Czech Republic

Open to Work

13,749

Total Points

•
2,355

HTML

2355 pts
Achievements

0 pts
Forum
•
2,083

CSS

2083 pts
Achievements

0 pts
Forum
•
782

JavaScript

782 pts
Achievements

0 pts
Forum
•
749

Design

749 pts
Achievements

0 pts
Forum
•
683

Python

683 pts
Achievements

0 pts
Forum
•
565

PHP

565 pts
Achievements

0 pts
Forum
•
502

Digital Literacy

502 pts
Achievements

0 pts
Forum
•
340

Development Tools

340 pts
Achievements

0 pts
Forum
•
59

Business

59 pts
Achievements

0 pts
Forum
•
12

Databases

12 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.

Skills & Experience

Company

Freelancer
Job Title

Graphic Designer/Web and Application Developer
Spoken Languages
- Czech
- English
- Spanish

171 Achievements

Achievement
Adding Sound Effects

Build an Interactive Story App with Swift

Achieved
Sep 29, 2018
Achievement
Personalizing The Story

Build an Interactive Story App with Swift

Achieved
Sep 26, 2018
Achievement
Refactoring Our Code

Build an Interactive Story App with Swift

Achieved
Sep 14, 2018
Achievement
Creating the User Interface Programmatically

Build an Interactive Story App with Swift

Achieved
Sep 13, 2018
Achievement
Creating a Story

Build an Interactive Story App with Swift

Achieved
Sep 12, 2018
Achievement
Navigating Through An Adventure

Build an Interactive Story App with Swift

Achieved
Sep 11, 2018
Achievement
Using the Delegate Pattern in iOS

Delegation in iOS

Achieved
Sep 10, 2018
Achievement
The Delegate Pattern

Delegation in iOS

Achieved
Sep 10, 2018
Achievement
Writing Great Swift

API Design Guidelines in Swift

Achieved
Sep 5, 2018
Achievement
Access Control

Intermediate Swift

Achieved
Aug 14, 2018
Achievement
Memory Management in Swift

Intermediate Swift

Achieved
Aug 14, 2018
Achievement
Extensions and Protocols

Intermediate Swift

Achieved
Aug 14, 2018
Achievement
Value Semantics, Type Methods and Inheritance

Intermediate Swift

Achieved
Aug 10, 2018
Achievement
Object Initialization

Intermediate Swift

Achieved
Aug 8, 2018
Achievement
Properties

Intermediate Swift

Achieved
Jul 26, 2018
Achievement
Data, Databases and SQL

SQL Basics

Achieved
Jul 15, 2018
Achievement
Displaying Additional Views

Build a Vending Machine App in Swift

Achieved
May 27, 2018
Achievement
Using the Vending Machine

Build a Vending Machine App in Swift

Achieved
May 26, 2018
Achievement
Loading Data From a Resource

Build a Vending Machine App in Swift

Achieved
May 24, 2018
Achievement
Modeling an Interface

Build a Vending Machine App in Swift

Achieved
May 22, 2018
Achievement
Error Handling

Error Handling in Swift

Achieved
May 21, 2018
Achievement
Creating Flexible Objects Using Protocols

Protocols in Swift

Achieved
May 17, 2018
Achievement
Protocol Basics

Protocols in Swift

Achieved
May 17, 2018
Achievement
Objects and Optionals

Enumerations and Optionals in Swift

Achieved
Apr 25, 2018
Achievement
Introduction to Optionals

Enumerations and Optionals in Swift

Achieved
Mar 8, 2018
Achievement
Introduction to Enumerations

Enumerations and Optionals in Swift

Achieved
Dec 5, 2017
Achievement
Running Apps on a Device

Build a Simple iPhone App with Swift

Achieved
Dec 3, 2017
Achievement
Improving Our User Interface

Build a Simple iPhone App with Swift

Achieved
Dec 3, 2017
Achievement
Understanding Flexbox

CSS Flexbox Layout

Achieved
Sep 13, 2017
Achievement
Structs As Data Models

Build a Simple iPhone App with Swift

Achieved
Aug 28, 2017
Achievement
View Controllers and Views

Build a Simple iPhone App with Swift

Achieved
Aug 27, 2017
Achievement
Getting Started with iOS Development

Build a Simple iPhone App with Swift

Achieved
Aug 26, 2017
Achievement
Differentiating Between Objects

Object-Oriented Swift

Achieved
Aug 9, 2017
Achievement
Going Further with HTML

HTML Basics

Achieved
Aug 7, 2017
Achievement
Images, Text and Links

HTML Basics

Achieved
Aug 7, 2017
Achievement
Structuring Your Content

HTML Basics

Achieved
Aug 6, 2017
Achievement
Getting Started With HTML

HTML Basics

Achieved
Aug 6, 2017
Achievement
Adding a New Web Page

Introduction to HTML and CSS (2016)

Achieved
Aug 6, 2017
Achievement
Make It Beautiful with CSS

Introduction to HTML and CSS (2016)

Achieved
Aug 6, 2017
Achievement
HTML: The Structural Foundation of Web Pages and Applications

Introduction to HTML and CSS (2016)

Achieved
Aug 6, 2017
Achievement
Getting Familiar with HTML and CSS

Introduction to HTML and CSS (2016)

Achieved
Aug 2, 2017
Achievement
Class Inheritance

Object-Oriented Swift

Achieved
Jul 12, 2017
Achievement
Classes in Swift

Object-Oriented Swift

Achieved
Jul 10, 2017
Achievement
Complex Data Structures

Object-Oriented Swift

Achieved
Jul 9, 2017
Achievement
Adding Power to Functions

Functions in Swift

Achieved
Jul 2, 2017
Achievement
Functions in Swift

Functions in Swift

Achieved
Jun 28, 2017
Achievement
Control Flow With Conditional Statements

Swift Collections and Control Flow

Achieved
Jun 23, 2017
Achievement
Control Flow With Loops

Swift Collections and Control Flow

Achieved
Jun 21, 2017
Achievement
Dictionaries in Swift

Swift Collections and Control Flow

Achieved
Jun 21, 2017
Achievement
Introduction to Collections

Swift Collections and Control Flow

Achieved
Jun 21, 2017
Achievement
Swift Operators

Swift Basics

Achieved
Jun 14, 2017
Achievement
Swift Types

Swift Basics

Achieved
Jun 14, 2017
Achievement
An Introduction to Swift Programming

Swift Basics

Achieved
Jun 8, 2017
Achievement
Introduction to PHP for WordPress

PHP for WordPress

Achieved
Jun 2, 2017
Achievement
WordPress Plugin Best Practices

Build a Website with WordPress

Achieved
May 31, 2017
Achievement
WordPress Widgets

Build a Website with WordPress

Achieved
May 31, 2017
Achievement
Custom Post Types in WordPress

Build a Website with WordPress

Achieved
May 31, 2017
Achievement
Customizing WordPress Themes

Build a Website with WordPress

Achieved
May 29, 2017
Achievement
WordPress Themes

Build a Website with WordPress

Achieved
May 29, 2017
Achievement
Local WordPress Development

Local WordPress Development

Achieved
May 29, 2017
Achievement
What Is WordPress?

What Is WordPress?

Achieved
May 29, 2017
Achievement
Letter Game App

Python Basics (2015)

Achieved
May 25, 2017
Achievement
Number Game App

Python Basics (2015)

Achieved
May 11, 2017
Achievement
Shopping List App

Python Basics (2015)

Achieved
May 9, 2017
Achievement
Logic in Python

Python Basics (2015)

Achieved
May 8, 2017
Achievement
Python Data Types

Python Basics (2015)

Achieved
May 6, 2017
Achievement
Python For Beginners

Python Basics (2015)

Achieved
May 4, 2017
Achievement
Control Flow With Loops

Swift 2.0 Collections and Control Flow

Achieved
Aug 27, 2016
Achievement
Introduction to HTTP

HTTP Basics

Achieved
Apr 13, 2016
Achievement
Moving Around in the Console

Console Foundations

Achieved
Mar 2, 2016
Achievement
Introduction to Video Games

How to Make a Video Game

Achieved
Feb 14, 2016
Achievement
Graphic Basics

Technology Foundations

Achieved
Feb 14, 2016
Achievement
DNS Basics

Technology Foundations

Achieved
Feb 14, 2016
Achievement
Launching the Website

Build a Simple Website

Achieved
Jan 26, 2016
Achievement
The Internet

How the Internet Works

Achieved
Jan 26, 2016
Achievement
Installing Wordpress

How to Make a Website with WordPress

Achieved
Dec 14, 2015
Achievement
WordPress Admin Settings

WordPress Admin Settings

Achieved
Dec 14, 2015
Achievement
WordPress User Roles

WordPress User Roles

Achieved
Dec 14, 2015
Achievement
WordPress Plugins

WordPress Basics

Achieved
Dec 13, 2015
Achievement
WordPress Themes

WordPress Basics

Achieved
Dec 13, 2015
Achievement
The WordPress Customizer

WordPress Basics

Achieved
Dec 13, 2015
Achievement
Managing Media in WordPress

WordPress Basics

Achieved
Dec 13, 2015
Achievement
Managing Content in WordPress

WordPress Basics

Achieved
Dec 11, 2015
Achievement
How to Install WordPress on Your Computer

How to Install WordPress on Your Computer

Achieved
Dec 3, 2015
Achievement
Swift Dictionaries

Swift 2.0 Collections and Control Flow

Achieved
Dec 3, 2015
Achievement
Introduction to Collections

Swift 2.0 Collections and Control Flow

Achieved
Nov 25, 2015
Achievement
Swift Operators

Swift 2.0 Basics

Achieved
Nov 25, 2015
Achievement
Swift Types

Swift 2.0 Basics

Achieved
Nov 8, 2015
Achievement
An Introduction to Swift Programming

Swift 2.0 Basics

Achieved
Nov 7, 2015
Achievement
Introduction to Front-End Frameworks

Framework Basics

Achieved
Oct 1, 2015
Achievement
Responsive Patterns

Responsive Layouts

Achieved
Oct 1, 2015
Achievement
Media Queries

Responsive Layouts

Achieved
Oct 1, 2015
Achievement
Responsive Theory

Responsive Layouts

Achieved
Sep 30, 2015
Achievement
Selectors

CSS Foundations

Achieved
Sep 30, 2015
Achievement
Captioning Video

HTML Video and Audio (Retired)

Achieved
Sep 30, 2015
Achievement
Media Basics

HTML Video and Audio (Retired)

Achieved
Sep 30, 2015
Achievement
Adding a Contact Form

Build a Simple PHP Application

Achieved
Sep 7, 2015
Achievement
Getting Started with CSS

CSS Foundations

Achieved
Jun 6, 2015
Achievement
Treehouse Club - CSS

Treehouse Club: CSS

Achieved
Jun 6, 2015
Achievement
Logo Design 101

Logo Design Basics

Achieved
May 14, 2015
Achievement
Creating the Menu and Footer

Build a Simple PHP Application

Achieved
May 14, 2015
Achievement
Type Tools

Photoshop Foundations

Achieved
May 14, 2015
Achievement
PHP Loops

PHP Basics (Retired)

Achieved
May 14, 2015
Achievement
Getting Started with PHP

Build a Simple PHP Application

Achieved
May 11, 2015
Achievement
PHP Conditionals

PHP Basics (Retired)

Achieved
May 11, 2015
Achievement
PHP Datatypes

PHP Basics (Retired)

Achieved
May 11, 2015
Achievement
PHP Data & Structure

PHP Basics (Retired)

Achieved
May 11, 2015
Achievement
PHP Getting Started

PHP Basics (Retired)

Achieved
May 11, 2015
Achievement
Masks Basics

Photoshop Foundations

Achieved
May 6, 2015
Achievement
Layer Basics

Photoshop Foundations

Achieved
May 6, 2015
Achievement
Grid Layout

CSS Layout Techniques

Achieved
May 5, 2015
Achievement
Fundamentals of C

Objective-C Basics (Retired)

Achieved
May 5, 2015
Achievement
Flexbox Layout

CSS Layout Techniques

Achieved
May 4, 2015
Achievement
Positioning Schemes

CSS Layout Techniques

Achieved
May 4, 2015
Achievement
Float Layout

CSS Layout Techniques

Achieved
May 4, 2015
Achievement
Display Modes

CSS Layout Techniques

Achieved
May 4, 2015
Achievement
WWW

How the Web Works

Achieved
Apr 28, 2015
Achievement
Advanced Selectors

CSS Selectors

Achieved
Apr 28, 2015
Achievement
JavaScript Functions

JavaScript Basics (Retired)

Achieved
Apr 21, 2015
Achievement
JavaScript Conditional Statements

JavaScript Basics (Retired)

Achieved
Apr 21, 2015
Achievement
How to Choose and Use Webfonts

Web Typography

Achieved
Apr 13, 2015
Achievement
JavaScript Numbers

JavaScript Basics (Retired)

Achieved
Apr 9, 2015
Achievement
JavaScript Variables

JavaScript Basics (Retired)

Achieved
Apr 8, 2015
Achievement
Introduction to Illustrator

Illustrator Foundations

Achieved
Apr 7, 2015
Achievement
Workspace Basics

Photoshop Foundations

Achieved
Apr 7, 2015
Achievement
Design Foundations Final

Design Foundations

Achieved
Apr 7, 2015
Achievement
Becoming a Problem Solver

Design Foundations

Achieved
Apr 7, 2015
Achievement
Understanding Aesthetics

Design Foundations

Achieved
Apr 7, 2015
Achievement
Introduction to Design

Design Foundations

Achieved
Apr 4, 2015
Achievement
Introduction to Typography

Web Typography

Achieved
Apr 3, 2015
Achievement
Choosing Options

HTML Forms

Achieved
Apr 3, 2015
Achievement
Organizing Forms

HTML Forms

Achieved
Apr 3, 2015
Achievement
Form Basics

HTML Forms

Achieved
Apr 3, 2015
Achievement
Structuring Tables

HTML Tables

Achieved
Apr 2, 2015
Achievement
Table Basics

HTML Tables

Achieved
Apr 2, 2015
Achievement
Welcome to the Treehouse Club

Treehouse Club: HTML

Achieved
Apr 2, 2015
Achievement
Going Further with Attribute Selectors and Pseudo-Classes

CSS Selectors

Achieved
Apr 2, 2015
Achievement
Selectors - Beyond the Basics

CSS Selectors

Achieved
Apr 2, 2015
Achievement
Getting Started with WordPress

Getting Started with WordPress

Achieved
Apr 1, 2015
Achievement
Discovery

How to Start a Business

Achieved
Apr 1, 2015
Achievement
Web Apps

Accessibility

Achieved
Apr 1, 2015
Achievement
Websites

Accessibility

Achieved
Apr 1, 2015
Achievement
Introduction

Accessibility

Achieved
Apr 1, 2015
Achievement
Forms

HTML

Achieved
Apr 1, 2015
Achievement
Tables

HTML

Achieved
Mar 31, 2015
Achievement
Objects

HTML

Achieved
Mar 31, 2015
Achievement
Links

HTML

Achieved
Mar 31, 2015
Achievement
Lists

HTML

Achieved
Mar 31, 2015
Achievement
Text

HTML

Achieved
Mar 31, 2015
Achievement
Introduction

HTML

Achieved
Mar 31, 2015
Achievement
Introducing JavaScript

JavaScript Basics (Retired)

Achieved
Mar 31, 2015
Achievement
Computer Languages

Computer Basics

Achieved
Mar 31, 2015
Achievement
Fundamental Concepts

CSS Basics (2014)

Achieved
Mar 31, 2015
Achievement
Designing with the Latest Features

CSS Basics (2014)

Achieved
Mar 31, 2015
Achievement
Basic Layout

CSS Basics (2014)

Achieved
Mar 31, 2015
Achievement
The Box Model

CSS Basics (2014)

Achieved
Mar 30, 2015
Achievement
Understanding Values and Units

CSS Basics (2014)

Achieved
Mar 30, 2015
Achievement
Basic Selectors

CSS Basics (2014)

Achieved
Mar 30, 2015
Achievement
Getting Started with CSS

CSS Basics (2014)

Achieved
Mar 27, 2015
Achievement
Sharing a Website

How to Make a Website

Achieved
Mar 27, 2015
Achievement
Debugging HTML and CSS Problems

How to Make a Website

Achieved
Mar 26, 2015
Achievement
Responsive Web Design and Testing

How to Make a Website

Achieved
Mar 26, 2015
Achievement
Adding Pages to a Website

How to Make a Website

Achieved
Mar 26, 2015
Achievement
Styling Web Pages and Navigation

How to Make a Website

Achieved
Mar 23, 2015
Achievement
Customizing Colors and Fonts

How to Make a Website

Achieved
Mar 23, 2015
Achievement
CSS: Cascading Style Sheets

How to Make a Website

Achieved
Mar 23, 2015
Achievement
Computer Basics

Computer Basics

Achieved
Mar 22, 2015
Achievement
Creating HTML Content

How to Make a Website

Achieved
Mar 22, 2015
Achievement
HTML First

How to Make a Website

Achieved
Mar 22, 2015
Achievement
Beginning HTML and CSS

How to Make a Website

Achieved
Mar 22, 2015
Achievement
Newbie

Achieved
Mar 22, 2015