Online Coding and Development Courses

• 

  Practice Enhancing Design with CSS

  In this practice session, we’ll be practicing enhancing a web layout with CSS.

  • CSS
  • Beginner
  • 10 min
• 

  Practice State in React

  Practice initializing and managing state in React by building a star rating comp...

  • JavaScript
  • Intermediate
  • 15 min
• 

  Practice OOP Vocabulary

  Test your knowledge of OOP vocabulary with this practice session.

  • Python
  • Intermediate
  • 8 min
• 

  Practice Emulating Built-ins

  Practice emulating Python's built-in methods dunder str, dunder eq, and dunder i...

  • Python
  • Intermediate
  • 7 min
• 

  Practice Properties in C#

  In this practice session, you'll practice creating and using properties in C#.

  • C#
  • Beginner
  • 23 min
• 

  Practice Inheritance in C#

  In this practice session, you'll practice using class inheritance in C#.

  • C#
  • Beginner
  • 31 min
• 

  Practice Creating Classes in C#

  In this practice session, you'll practice creating classes using C#.

  • C#
  • Beginner
  • 18 min
• 

  Practice Methods in C#

  In this practice session, you'll practice adding methods to classes in C#.

  • C#
  • Beginner
  • 18 min
• 

  Practice Loops in C#

  In this practice session, you'll practice using `for` and `foreach` loops in C#.

  • C#
  • Beginner
  • 19 min
• 

  Practice Encapsulation and Arrays in C#

  In this practice session, you'll practice encapsulation and arrays in C#.

  • C#
  • Beginner
  • 25 min
• 

  Practice Template Literals

  Practice using template literals in JavaScript.

  • JavaScript
  • Beginner
  • 5 min
• 

  Practice Basic Math Calculations in Python

  Let's practice doing math and type conversions!

  • Python
  • Beginner
  • 4 min
• 

  Practice If and Else If Statements in JavaScript

  Practice simple conditional statements in JavaScript.

  • JavaScript
  • Beginner
  • 7 min
• 

  Practice PHP String Manipulation

  Practice creating, manipulating and outputting string variables in PHP.

  • PHP
  • Beginner
  • 4 min
• 

  Practice Manipulating the DOM

  Practice Manipulating the DOM with JavaScript.

  • JavaScript
  • Intermediate
  • 8 min
• 

  Practice Traversing the DOM

  Practice Traversing the DOM in JavaScript.

  • JavaScript
  • Beginner
  • 5 min
• 

  Practice Arrow Functions in JavaScript

  Practice arrow function syntax in JavaScript.

  • JavaScript
  • Beginner
  • 8 min
• 

  Practice DOM Manipulation: Form Validation

  Practice DOM Manipulation with JavaScript.

  • JavaScript
  • Intermediate
  • 6 min
• 

  Practice Let and Const in JavaScript

  Practice working with `let` and `const` variables in JavaScript.

  • JavaScript
  • Beginner
  • 8 min
• 

  Practice Handling Events in jQuery

  Practice responding to user actions with jQuery.

  • JavaScript
  • Beginner
  • 8 min
• 

  Practice Working with jQuery Collections

  Practice working with collections in JQuery.

  • JavaScript
  • Beginner
  • 6 min
• 

  Practice Structuring and Grouping Content

  Practice the fundamentals of structuring and grouping content with markup.

  • HTML
  • Beginner
  • 10 min
• 

  Practice Prototyping

  Practice prototyping by connecting mockups in Adobe XD. Practice creating tap, t...

  • Design
  • Beginner
  • 7 min
• 

  Practice Fetch API

  Practice Fetch API using the REST Countries API.

  • JavaScript
  • Intermediate
  • 5 min
• 

  Practice Simple WHERE Clauses with SQL

  In this workshop we'll practice simple WHERE clauses.

  • Databases
  • Beginner
  • 6 min
• 

  Practice Media Queries

  Practice writing CSS media queries by adjusting the layout of a simple web page.

  • CSS
  • Beginner
  • 5 min
• 

  Practice CSS Box Model Basics

  Practice working with the core components of the CSS box model.

  • CSS
  • Beginner
  • 7 min
• 

  Practice CSS Floats

  Practice laying out a web page and wrapping text around elements, with CSS float...

  • CSS
  • Beginner
  • 6 min
• 

  Practice CSS Selectors

  Practice basic CSS selectors by targeting and styling elements of a web page.

  • CSS
  • Beginner
  • 5 min
• 

  Practice Basic JavaScript Functions

  Practice creating basic JavaScript functions, adding parameters, calling functio...

  • JavaScript
  • Beginner
  • 7 min
• 

  Practice Basic jQuery Methods

  Practice enhancing small projects using a variety of jQuery methods.

  • JavaScript
  • Beginner
  • 8 min
• 

  Practice Including PHP with HTML

  Practice using PHP to include variables, files and dates within an HTML page.

  • PHP
  • Beginner
  • 5 min
• 

  Practice PHP if/else Statements

  Practice using if, else and elseif statements to control the flow of your applic...

  • PHP
  • Beginner
  • 5 min
• 

  Practice Creating and Indexing Lists

  Let's practice creating lists and printing their contents.

  • Python
  • Beginner
  • 5 min
• 

  Practice Selecting DOM Elements

  In this workshop, you will practice selecting DOM elements with JavaScript.

  • JavaScript
  • Beginner
  • 8 min
• 

  Practice PHP Number Variables

  Practice creating, manipulating and outputting numeric variables including integ...

  • PHP
  • Beginner
  • 5 min
• 

  Practice Importing and Exporting Modules in Node.js

  Practice the basics of importing and exporting modules in Node.js.

  • JavaScript
  • Intermediate
  • 14 min
• 

  Practice DOM Manipulation: Modal

  Practice DOM Manipulation with JavaScript by creating a modal.

  • JavaScript
  • Intermediate
  • 4 min
• 

  Practice Cleaning Data

  Practice accessing data and cleaning it for use in other functions or programs.

  • Python
  • Beginner
  • 13 min
• 

  Practice Java Objects

  In this Practice Session we'll create an Object to represent a cow.

  • Java
  • Beginner
  • 4 min
• 

  Practice JavaScript Basics: Conditional Strings

  Practice conditional strings with JavaScript.

  • JavaScript
  • Beginner
  • 4 min
• 

  Practice Java Arrays

  Get a better understanding of Arrays in Java by completing this practice session...

  • Java
  • Beginner
  • 4 min
• 

  Practice Input and Output in Java

  In this Practice Session we will work with I/O in Java.

  • Java
  • Beginner
  • 4 min
• 

  Practice Object Literals in JavaScript

  Practice creating, using and modifying simple object literals in JavaScript

  • JavaScript
  • Beginner
  • 20 min
• 

  Practice Column Selection and Aliasing with SQL

  In this practice session we'll cover selecting columns and aliasing them.

  • Databases
  • Beginner
  • 4 min
• 

  Practice Vue.js Templating

  Practice displaying data in a Vue.js template, as well as adding functionality t...

  • JavaScript
  • Beginner
  • 5 min
• 

  Practice Semantic HTML

  In this workshop, you'll practice the basics of semantic HTML. When you write ma...

  • HTML
  • Beginner
  • 6 min
• 

  Practice Input and Output in Ruby

  Let's practice some basic Ruby to make sure that everything you've learned so fa...

  • Ruby
  • Beginner
  • 7 min
• 

  Practice Strings in Ruby

  Let's practice some basic Ruby to make sure that everything you've learned so fa...

  • Ruby
  • Beginner
  • 3 min
• 

  Practice Python While Loops

  *While* you are learning about loops, take a moment to practice using `while` lo...

  • Python
  • Beginner
  • 3 min
• 

  Practice Serving Static Files in Express

  Practice the basics of serving static files in Express, a popular web applicatio...

  • JavaScript
  • Intermediate
  • 9 min
• 

  Practice Grid Template Areas

  Let's practice using grid template areas, a feature of CSS Grid that lets you as...

  • CSS
  • Beginner
  • 8 min
• 

  Practice Design Criticism

  One of the most important skills to have as a UX Designer is the ability to give...

  • Design
  • Beginner
  • 5 min
• 

  Practice Using Data with Pug Templates

  Practice the basics of passing data to Pug views and generating HTML dynamically...

  • JavaScript
  • Intermediate
  • 10 min
• 

  Practice Ruby Methods

  Let's practice some basic Ruby to make sure that everything you've learned so fa...

  • Ruby
  • Beginner
  • 4 min
• 

  Practice CSS Length Units

  In this practice session, we’ll be working with CSS Length Units.

  • CSS
  • Beginner
  • 8 min
• 

  Practice CSS Media Queries

  In this practice session, we’ll be working with CSS Media Queries.

  • CSS
  • Beginner
  • 8 min
• 

  Practice Error Handling

  Practice your error handling skills using try/except blocks.

  • Python
  • Beginner
  • 9 min
• 

  Practice JavaScript Math Methods

  Practice using JavaScript's math methods to add, subtract, multiply, divide, as ...

  • JavaScript
  • Beginner
  • 8 min
• 

  Practice Setting Up a Python Project

  Practice setting up a Python project locally and on GitHub.

  • Python
  • Intermediate
  • 11 min
• 

  Practice the CSS Box Model

  In this practice session, we’ll be working with the CSS Box Model.

  • CSS
  • Beginner
  • 6 min
• 

  Practice Using Strings and Lists in Python

  Practice creating basic strings and lists in Python. Use Python's multiplication...

  • Python
  • Beginner
  • 3 min
• 

  Practice Data Visualization

  Students will practice converting raw data into an informative visualization.

  • Design
  • Beginner
  • 24 min
• 

  Practice Vue.js List Rendering

  Practice list rendering, writing methods, computed properties and adding functio...

  • JavaScript
  • Beginner
  • 9 min
• 

  Practice Hooks in React

  Practice React's built-in useContext and useState Hooks to update an app with us...

  • JavaScript
  • Intermediate
  • 11 min
• 

  Practice Web Accessibility: Checkboxes

  Practice web accessibility by adding focus states to checkbox inputs with JavaSc...

  • JavaScript
  • Beginner
  • 3 min
• 

  Practice DOM Manipulation: Checkboxes

  Practice DOM Manipulation with JavaScript by conditionally disabling checkboxes.

  • JavaScript
  • Beginner
  • 4 min
• 

  Practice Basic Arrays in JavaScript

  Practice creating array literals, accessing array items, and using array methods...

  • JavaScript
  • Beginner
  • 26 min
• 

  Practice ExpressJS: Middleware

  Practice middleware in ExpressJS by replicating user authentication and controll...

  • JavaScript
  • Beginner
  • 7 min
• 

  Practice CSS Grid: Columns, Rows and Gaps

  Practice declaring row and column tracks, as well as applying gutters between th...

  • CSS
  • Intermediate
  • 5 min
• 

  Practice Basic Variables, Input & Output in JavaScript

  Practice creating variables, working with input and alert dialog boxes, concaten...

  • JavaScript
  • Beginner
  • 6 min
• 

  Practice Dynamic Select Menus

  Practice creating intuitive and error-proof web forms using JavaScript to automa...

  • JavaScript
  • Beginner
  • 8 min
• 

  Practice Data Pagination

  Practice data pagination with JavaScript to enhance user experience and optimize...

  • JavaScript
  • Beginner
  • 10 min
• 

  Practice Filtering Paginated Data

  Practice implementing user-friendly data filtering and displaying the paginated ...

  • JavaScript
  • Beginner
  • 7 min
• 

  Practice Flexible CSS Grid Layout

  Practice using CSS Grid features that adapt your content to available space and ...

  • CSS
  • Intermediate
  • 6 min
• 

  Practice Error Handling in Express

  In this practice session, you'll get to sharpen your error handling skills in Ex...

  • JavaScript
  • Intermediate
  • 9 min
• 

  Practice Ruby Numeric Types

  Let's practice some basic Ruby to make sure that everything you've learned so fa...

  • Ruby
  • Beginner
  • 6 min
• 

  Practice Creating UX Content

  Practice creating UX content. You'll be given two companies with differing brand...

  • Design
  • Beginner
  • 11 min
• 

  Practice Completing a Profile

  Often when you register for a service, you're just asked for your email address ...

  • Design
  • Beginner
  • 2 min
• 

  Practice Sketching

  For this practice session, you’ll be creating eight rough sketches for the prima...

  • Design
  • Beginner
  • 7 min
• 

  Practice Creating a Sitemap

  Practice creating a sitemap for an elementary school called Northeast Elementary...

  • Design
  • Beginner
  • 5 min
• 

  Practice Wireframing

  For this practice session, you'll be creating a digital wireframe in Figma for t...

  • Design
  • Beginner
  • 22 min
• 

  Practice Storyboarding

  Storyboarding is a great way to visualize a persona’s interaction with your prod...

  • Design
  • Beginner
  • 2 min
• 

  Practice Journey Maps

  Journey maps are a helpful tool for UX designers that can articulate pain points...

  • Design
  • Beginner
  • 8 min
• 

  Practice Using A Design System

  For this practice session, we’ll be using Adobe XD to wireframe a homepage for v...

  • Design
  • Beginner
  • 37 min
• 

  Practice File Paths

  Sharpen your HTML skills by practicing writing file paths for images and links.

  • HTML
  • Beginner
  • 11 min
• 

  Practice Comparisons in Python

  A quick review of data types, making comparisons, and using `if` and `elif` stat...

  • Python
  • Beginner
  • 6 min
• 

  Practice JavaScript Loops

  Build up your JavaScript skills by practicing the basics of loops.

  • JavaScript
  • Beginner
  • 15 min
• 

  Before and After: Color

  Practice designing with color.

  • Design
  • Beginner
  • 7 min
• 

  Practice Designing a Product Card

  Cards are a common UI pattern used to create reusable elements that can be used ...

  • Design
  • Beginner
  • 4 min
• 

  Practice Writing Loops in Python

  Programming with loops can be tricky, and the best way to get comfortable and gr...

  • Python
  • Beginner
  • 22 min
• 

  Practice Empathy Maps

  Empathy maps can help UX designers identify with users and understand their need...

  • Design
  • Beginner
  • 7 min
• 

  Practice React Component Rendering

  Sharpen your React skills by practicing JSX, creating and rendering components, ...

  • JavaScript
  • Beginner
  • 11 min
• 

  Practice Hashing Passwords in PHP

  When storing user’s passwords, the most important thing to keep in mind is that ...

  • PHP
  • Intermediate
  • 5 min
• 

  Practice Input and Output in Python

  You've got the ability to get information from the user, input, and show them so...

  • Python
  • Beginner
  • 8 min
• 

  Practice Hashing Passwords in JavaScript

  When storing users' passwords, the most important thing to keep in mind is that ...

  • JavaScript
  • Beginner
  • 4 min
• 

  Practice Creating a Paywall

  Websites that are content-driven will often need to balance paid content and fre...

  • Design
  • Beginner
  • 3 min
• 

  Structuring Your JavaScript Code

  Improve the quality of your code by applying the principles of narrative flow, i...

  • JavaScript
  • Beginner
  • 16 min
• 

  CSS Best Practices

  There’s more to writing good CSS than simply knowing all the latest and greatest...

  • CSS
  • Intermediate
  • 33 min
• 

  Designing for User Roles

  Delve into the nuances of building a product for multiple audiences. Learn how u...

  • Design
  • Beginner
  • 18 min
• 

  Plan and Design Effective No-Code Apps

  This workshop will help you write clear, effective Product Requirements Document...

  • No-Code
  • Beginner
  • 13 min
• 

  Code Coverage with Istanbul

  Code coverage is the development practice in seeing how much of your code is cov...

  • JavaScript
  • Intermediate
  • 10 min
• 

  Treehouse Features: Code Challenges

  Laura provides a brief overview of Code Challenges. Code Challenges are coding e...

  • Learning Resources
  • Beginner
• 

  Auto User Search with JavaScript - Treehouse Live

  Need practice working with the Document Object Model (DOM)? This project showcas...

  • JavaScript
  • Beginner
  • 35 min
• 

  JavaScript Array Methods: filter()

  Have you ever needed to filter array elements by certain criteria? For example, ...

  • JavaScript
  • Beginner
  • 5 min
• 

  App Deployment Accounts

  When working on the public server where your users will interact with your app, ...

  • Development Tools
  • Advanced
  • 25 min
• 

  Using Treehouse Workspaces

  Workspaces is an online text editor and development environment that is integrat...

  • Learning Resources
  • Beginner
  • 26 min
• 

  Before and After: Typography

  Improve the typography on an existing design.

  • Design
  • Beginner
  • 6 min
• 

  Introducing Google Slides

  Walkthrough Google Slides to understand the tools available to create presentati...

  • Design
  • Beginner
  • 11 min
• 

  Before and After: Layout

  Improve the layout of an existing mobile iOS app.

  • Design
  • Beginner
  • 5 min
• 

  String Manipulation with JavaScript

  Learn and practice string manipulation methods that will allow you more control ...

  • HTML
  • Beginner
  • 19 min
• 

  Dunder Main

  In this workshop, we’ll talk about using a recommended Python best practice, dun...

  • Python
  • Beginner
  • 17 min
• 

  Practice Prototyping in Figma

  Enhance your prototyping skills by linking mockups in Figma and experimenting wi...

  • Design
  • Beginner
  • 14 min
• 

  How to Make a Favicon

  Learn how to design and create favicons with Treehouse web design teacher Nick P...

  • Design
  • Beginner
  • 35 min
• 

  AI-Powered VS Code Extensions

  Discover how AI-powered Visual Studio Code extensions like GitHub Copilot, Intel...

  • AI
  • Beginner
  • 7 min
• 

  Creating Mockups

  Learn how mockups are used in the design process, and discover techniques for br...

  • Design
  • Beginner
  • 37 min
• 

  Python Libraries for AI

  The workshop introduces Python libraries for Machine Learning, Natural Language ...

  • AI
  • Beginner
  • 11 min
• 

  Create AR Effects for TikTok with Effect House

  Join our exciting workshop and take a sneak peek into the world of augmented rea...

  • AI
  • Beginner
  • 34 min
• 

  Build a To-Do List App with Replit Agent

  In this workshop, participants will learn how to create a fully functional task ...

  • Vibe Coding
  • Beginner
  • 90 min

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