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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(UPI) Chapter 6: Functions in JavaScript
This course is part of our College Credit Program, designed to help you earn college credit while mastering valuable skills. If you're interested in pursuing college credit, click here to learn more. (https://join.teamtreehouse.com/college-credit/) This course delves into the core aspects of JavaScript functions, offering a comprehensive understanding of how functions operate and their significance in modern web development. It begins with an overview of JavaScript functions, exploring their foundational principles and practical applications. The course progresses to discuss the handling of arguments and return values, which are crucial for creating dynamic and flexible code. Additionally, it introduces more advanced concepts like arrow functions and recursion, providing insight into how these features can be utilized to write more concise and efficient code.
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JavaScript Functions
JavaScript functions let you create reusable chunks of code. They make programming faster, easier, and less error-prone. They are also one of the essential concepts in JavaScript programming.
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8 minPractice
Practice Arrow Functions in JavaScript
Practice arrow function syntax in JavaScript.
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Getting Started With ES2015
ES2015, also called ES6, is a newer version of the JavaScript language that’s well supported in browsers and commonly used by programmers. In this course, you'll get up-to-speed with ES2015 basics and be well on your way to writing modern JavaScript. You'll learn best practices for creating variables, using the let and const keywords, and a better way to concatenate string values using template literals. You'll also learn the compact syntax for creating functions using "arrow syntax."
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8 minWorkshop
Introducing Arrow Function Syntax
ECMAScript 2015 has been widely adopted by all modern browsers. This means we can use a more concise way to write functions. In this workshop we'll convert some traditional functions into a more modern syntax.
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Introducing ES2015
Learn the basics of the ECMAScript 2015, also known as ES6, JavaScript standard. JavaScript has come a long way since it’s inception in 1995. The ECMAScript 2015 specification brought a lot of improvements, the largest set of changes the language has seen to-date. In this course, we’ll review some of the new features and demonstrate how they can be used to build better JavaScript applications.
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Upcoming Releases
The following items are scheduled to be released soon. You can also visit our content roadmap for more info.
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Workshop
Build a To-Do List App with Replit Agent
In this workshop, participants will learn how to create a fully functional task tracker using Replit, a powerful online coding platform. With the assistance of Replit Agent, an AI-powered tool, you'll discover how to design, develop, and deploy your task tracker efficiently. This hands-on session is perfect for developers and builders of all skill levels—no previous coding experience is required—and is ideal for anyone looking to enhance their app building skills.
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Workshop
Build Your Own CRM in Lovable Step-by-Step
This workshop introduces Lovable.dev, an AI-powered tool that helps you turn ideas into working web apps using simple prompts. Watch as Christian and Dan get hands-on with features like text-to-app generation, Supabase integration, and easy deployment. Whether you’re building a prototype or just exploring what’s possible, it’s a practical session for anyone interested in faster, simpler app development.
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Workshop
Build and Deploy a Landing Page Using Bolt
This workshop introduces Bolt.new, an AI-powered platform that helps you build web apps using natural language prompts. In this session, we'll build a landing page from scratch, integrate a waitlist, and deploy it—all without writing traditional code. It’s a practical, hands-on experience for anyone looking to prototype quickly and start growing an audience right away.
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Workshop
Create a REST API with Xano
Learn to build a digital marketplace REST API using Xano, a NoCode tool that lets you create APIs without writing any code.
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3 minWorkshop
Hello Swift & SwiftUI
Learn the basics of Swift and SwiftUI, Apple’s programming language, by building your first iOS app! This beginner-friendly course covers Swift programming, Xcode setup, and UI design with SwiftUI. You'll apply your skills by creating a Dice Roller app, using state to update the UI dynamically. No prior coding experience needed—just dive in and start building!
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Workshop
Practice Wireframing in Figma
For this practice session, you'll be creating a digital wireframe in Figma for the primary screen of a sketching application. This app lets users quickly make shareable, black-and-white sketches using their fingers on a touchscreen.
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Workshop
Practice Prototyping in Figma
Enhance your prototyping skills by linking mockups in Figma and experimenting with tap, time, and drag interactions.
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