Welcome to the Treehouse Library
This is a sample catalog of all the courses we offer. Browse by topic or difficulty. Sign up today and get access to our entire library. Treehouse students get access to workshops, bonus content, conferences, and more.
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Algorithms: Sorting and Searching
This course will look at algorithms in two categories: sorting and searching. We'll implement well-known sorting algorithms like selection sort, quicksort, and merge sort. You'll also learn basic search algorithms like sequential search and binary search.
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Introduction to Data Structures
In computer science a data structure is a construct that allows us to organize and store data in our programs. In this course we're going to learn about two introductory data structures - arrays and linked lists! We'll look at common operations and how the runtimes of these operations affect our everyday code. For the rest of the course we're going to bring our knowledge of algorithms and data structures together to solve the problem of sorting data using the merge sort algorithm
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Object-Oriented JavaScript By Example
Practice your object-oriented JavaScript skills by building a fun and interactive 'Four in a Row' game.
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Introduction to Wireframing
Wireframing is a useful part of the design process. Throughout a website or mobile app project, you will have a lot of ideas and the best way to sort through those ideas is to brainstorm. Wireframes are a visual artifact of brainstorming, and the goal is to make them with minimal effort, as to encourage ideation. Whether you're a designer or not, wireframing is an important skill to have in your toolkit. It's beneficial for product managers, marketers, or anyone else with ideas for a website or mobile app. Wireframes are a valuable tool for visualizing user experiences, iterating on ideas, and sharing ideas with others.
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The following items are scheduled to be released soon. You can also visit our content roadmap for more info.
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React Basics (Refresh)
React is a JavaScript library for building user interfaces. React makes building and maintaining the user interface of your application faster and easier by breaking it up into smaller, reusable components. It also helps eliminate the complexity that comes with updating your DOM elements when the user interacts with your application.
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React Components
Components are the core building blocks of a React application. This course will level-up your React skills by providing a better understanding of class vs. functional components, state and lifecycle methods, and how to split your UI into reusable and composable components.
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Cleaning and Preparing Data
We rely on data to answer important questions, whether we are trying to make the best business decisions or determine the effectiveness of a new medical treatment. But our analyses are only as accurate as the data we are using, and incorrect or “dirty” data can lead to incorrect conclusions and assumptions. Data preparation, also called “cleaning” or “scrubbing”, is an important part of ensuring our analyses are accurate and useful.
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Introduction to Software Testing
Learn how to become an effective test engineer. Testing is something every developer must do to write effective and quality code, but going about what you should test and how to do it can be a challenging question. Quality Assurance is the practice of monitoring other developers' work and creating processes and tests that will ensure the product meets the end user’s expectations and limiting the amount of bugs that are released. This course will teach you how to become a Software Quality Assurance Engineer.
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Evaluating Design
An essential part of the UX design process is measurement and validation. This course will provide an overview of the methods available for measuring the success of a design including A/B testing, surveys and usability testing. It will specifically deep dive into usability testing so that students will learn about what’s involved in running such a test, from gaining initial stakeholder buy-in to preparing a test plan and to presenting actionable findings.
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Practice
Practice Classes in JavaScript
Practice building and working with classes in JavaScript.
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Practice Getters and Setters in JavaScript
Practice writing and using getters and setters in JavaScript classes.
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UX Content Strategy
With so many websites and apps offering similar content and features, you need to provide a unique experience to compete - something memorable and enjoyable that resonates with your users. UX Content is how it’s done. From your home page and product descriptions down to your error messages, UX content can turn generic interactions into memorable experiences. By establishing a unique voice and personality, you can create an environment that welcomes, supports, and inspires users during their visit. So in this course, we’ll discuss why UX Content is so important, where you need it, how to create it, and how to ensure it’s effective.
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Build a REST API with Express (Refresh)
In this course, you'll learn how to build a REST API with Express, a popular framework written for Node.js.
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Using SQL Databases with Node.js
In this course, you'll learn how to leverage the power of SQL databases within your Node.js applications.
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Introducing IntelliJ and Unpacking Packages
Professional developers don't typically develop in the command line, they use an Integrated Development Environment (IDE) like IntelliJ IDEA. In this course, we'll see how to get started with IntelliJ IDEA and learn how to use packages.
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Workshop
React Context API
In the typical React data flow, components communicate with each other via props. A parent passes props down to child components. Sometimes the intermediary components get props passed to them with the sole purpose of passing that data down one (or several) more levels deep. This cascade of props is often referred to as "prop drilling". The React Context API provides a way to pass data to components without having to pass props manually at every single level.
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Organizing JavaScript with Modules
In this course, you'll learn how to organize JavaScript code using modules.