Jonatan Witoszek

Jonatan Witoszek

Cieszyn, Poland

Skills & Experience

  • Spoken Languages

    • Polish
    • English

175 Achievements

  • Advanced Selectors
  • Going Further with Attribute Selectors and Pseudo-Classes
  • Selectors - Beyond the Basics
  • Going Further with Grid Layout
  • Flexible Sized Grids
  • Introducing Grid Layout
  • Building a Layout with Flexbox
  • Flexbox Properties
  • Understanding Flexbox
  • Media Basics
  • Captioning Video
  • Table Basics
  • Structuring Tables
  • JavaScript Loops
  • JavaScript Arrays
  • JavaScript Objects
  • Building a Flashcard App
  • Sweeping Vues: Loops, Methods, Directives
  • What a Beautiful Vue!
  • Introducing Vue
  • AJAX and APIs
  • jQuery and AJAX
  • Getting Data from a Database
  • Data, Databases and SQL
  • Working with jQuery Collections (2017)
  • Understanding jQuery Events and DOM Traversal (2017)
  • Introducing jQuery (2017)
  • Programming AJAX
  • AJAX Concepts
  • API Protection
  • Resourceful Blueprints
  • Getting the REST You Need 2
  • Character Builder
  • Flask Templates
  • Welcome to Flask
  • Choosing Options
  • Organizing Forms
  • Form Basics
  • Improving the Application Code
  • Editing and Filtering Names
  • Adding and Removing Names
  • Traversing the DOM
  • Responding to User Interaction
  • Making Changes to the DOM
  • Getting a Handle on the DOM
  • The Browser Environment
  • JavaScript Objects and Conditionals
  • JavaScript Arrays and Loops
  • Practice forEach
  • JavaScript Functions
  • Data Types and Variables
  • JavaScript Tools and Workflows
  • JavaScript is Everywhere
  • Users and Authorization
  • Django Authentication
  • Security and Customization
  • Make the REST Framework Work for You
  • RESTful Django
  • Customizing Class-based Views
  • Classy Views
  • Detail View
  • List View
  • The Django Admin
  • Total Control
  • Basic ORM Usage
  • Same Old ORM
  • Inlines and Media
  • Django Model Forms
  • Django Models
  • Django Forms
  • Building Custom Filters
  • Building Custom Tags
  • Template Tags and Filters
  • Test Time!
  • Final Details
  • Django Templates
  • Model Administration
  • What a View
  • Say Hello to Django
  • GET and POST Requests in a Browser
  • Introduction to HTTP
  • Covering Your Bases
  • Be Assertive!
  • What Is Testing?
  • Gettin' CRUD-y With It
  • Our Diary App
  • Meet Peewee
  • Responsive Patterns
  • Media Queries
  • Responsive Theory
  • Positioning Page Content
  • CSS Layout Project
  • Page Layout with the Float Property
  • Controlling Layout with CSS Display Modes
  • Getting Started with CSS Layout
  • Introducing JavaScript
  • Fundamental Concepts
  • Designing with the Latest Features
  • Basic Layout
  • The Box Model
  • Understanding Values and Units
  • Basic Selectors
  • Getting Started with CSS
  • Getting the REST You Need
  • Exploration
  • Discovery
  • Going Further with HTML
  • Images, Text and Links
  • Structuring Your Content
  • Getting Started With HTML
  • Adding a New Web Page
  • Make It Beautiful with CSS
  • HTML: The Structural Foundation of Web Pages and Applications
  • Getting Familiar with HTML and CSS
  • Buggy Logs
  • Cleaner Code
  • Dice Roller
  • Python: Advanced Objects
  • Python: Inheritance
  • Python: Instant Objects
  • Python Regular Expressions
  • Starting a Freelance Career
  • Dungeon Game 2
  • Python Sets
  • Python Tuples
  • Python Dictionaries
  • Python Slices
  • Python Lists
  • Letter Game App
  • Number Game App
  • Shopping List App
  • Logic in Python
  • Properties
  • Dockerize a Web App
  • Managing Images and Containers
  • Visual Format Language
  • Auto Layout in Code
  • Building Images Using Dockerfiles
  • Fundamentals of Docker
  • Docker Use Cases
  • Python Data Types
  • Python For Beginners
  • Trait Collections
  • Inequalities, Content and Priorities
  • The Constraint Equation
  • A History Lesson
  • Displaying Additional Views
  • Using the Vending Machine
  • Loading Data From a Resource
  • Modeling an Interface
  • Error Handling
  • Creating Flexible Objects Using Protocols
  • Protocol Basics
  • Objects and Optionals
  • Introduction to Optionals
  • Introduction to Enumerations
  • Running Apps on a Device
  • Improving Our User Interface
  • Structs As Data Models
  • View Controllers and Views
  • Getting Started with iOS Development
  • Differentiating Between Objects
  • Class Inheritance
  • Classes in Swift
  • Complex Data Structures
  • Adding Power to Functions
  • Functions in Swift
  • Control Flow With Conditional Statements
  • Control Flow With Loops
  • Dictionaries in Swift
  • Introduction to Collections
  • Swift Operators
  • Swift Types
  • An Introduction to Swift Programming
  • Newbie