Design and develop Java-based RESTful APIs using the latest versions of the Spring MVC and Spring Boot frameworks. This book walks you through the process of designing and building a REST application while delving into design principles and best practices for versioning, security, documentation, error handling, paging, and sorting. Spring REST provides a brief introduction to REST, HTTP, and web infrastructure. You will learn about several Spring projects such as Spring Boot, Spring MVC, Spring Data JPA, and Spring Security, and the role they play in simplifying REST application development. You will learn how to build clients that consume REST services. Finally, you will learn how to use the Spring MVC test framework to unit test and integration test your REST API. After reading this book, you will come away with all the skills to build sophisticated REST applications using Spring technologies. What You Will Learn Build Java-based microservices, native cloud, or any applications using Spring REST Employ Spring MVC and RESTful Spring Build a QuickPoll application example Document REST services, as well as versioning, paging, and sorting Test, handle errors and secure your application Who This Book Is For Intermediate Java programmers with at least some prior experience with Spring and web/cloud application development.

With a growing ecosystem of tools and libraries available, and the flexibility to run on many platforms (web, desktop and mobile), JavaScript is a terrific all-round environment for all data wrangling needs! Data Wrangling with JavaScript teaches readers core data munging techniques in JavaScript, along with many libraries and tools that will make their data tasks even easier. Key Features * How to handle unusual data sets * Cleaning and preparing raw data * Visualizing your results Audience Written for developers with experience using JavaScript. No prior knowledge of data analytics is needed. Author Bio Ashley Davis is a software developer, entrepreneur, writer, and a stock trader. He is the creator of Data-Forge, a data transformation and analysis toolkit for JavaScript inspired by Pandas and Microsoft LINQ.

Journey into the amazing world of WebAssembly (Wasm) and learn about how it can be applied on the cloud. This book is an introduction to Wasm aimed at professionals accustomed to working with cloud-related technologies such as Kubernetes and Istio service mesh. Author Shashank Jain begins with an introduction to Wasm and its related tooling such as wasm-bindgen and wapc. He then walks you through code examples using Rust, Golang, and JavaScript to demonstrate how they can be compiled to Wasm and consumed from Wasm runtimes deployed standalone, as well as on the cloud. You will see how a wasm module can be run through an http interface, and how Wasm fits into CNCF projects such as Kubernetes and Istio service mesh. After that, you'll learn how the polyglot nature of WebAssembly can be leveraged through examples written in languages like Rust and consumed via Golang and JavaScript, with a focus on how WebAssembly allows interoperability between them. You'll gain an understanding of how Wasm-based modules can be deployed inside Linux containers and orchestrated via Kubernetes, and how Wasm can be used within the Istio proxy to apply rules and filters. After reading this book, you'll have the knowledge necessary to apply WebAssembly to create multi tenanted workloads which can be polyglot in nature and can be deployed on cloud environments like Kubernetes. What You Will Learn Understand how Wasm can be used for server-side applications Learn about Wasm memory model and Wasm module layout How communication between host and Wasm module is facilitated The basics of Wasm sandboxing and security The fundamentals of tooling around Wasm, such as WAT and Wasm-pack Create a Wasm module in Rust and consume it from JavaScript, Rust and Golang. Grasp how Kubernetes can be used to orchestrate Wasm-based workloads How Wasm fits into service mesh Who Is This Book For Software developers/architects who are looking to hone their skills in virtualization and explore alternatives to Docker and container-based technologies for their workload deployments. Readers should have a basic programming background in languages such as Rust and Golang to get the most out of this book.

Learn to develop and deploy dashboards as web apps using the Python programming language, and how to integrate algorithms into web apps. Author Tshepo Chris Nokeri begins by introducing you to the basics of constructing and styling static and interactive charts and tables before exploring the basics of HTML, CSS, and Bootstrap, including an approach to building web pages with HTML. From there, he'll show you the key Python web frameworks and techniques for building web apps with them. You'll then see how to style web apps and incorporate themes, including interactive charts and tables to build dashboards, followed by a walkthrough of creating URL routes and securing web apps. You'll then progress to more advanced topics, like building machine learning algorithms and integrating them into a web app. The book concludes with a demonstration of how to deploy web apps in prevalent cloud platforms. Web App Development and Real-Time Web Analytics with Python is ideal for intermediate data scientists, machine learning engineers, and web developers, who have little or no knowledge about building web apps that implement bootstrap technologies. After completing this book, you will have the knowledge necessary to create added value for your organization, as you will understand how to link front-end and back-end development, including machine learning. What You Will Learn Create interactive graphs and render static graphs into interactive ones Understand the essentials of HTML, CSS, and Bootstrap Gain insight into the key Python web frameworks, and how to develop web applications using them Develop machine learning algorithms and integrate them into web apps Secure web apps and deploy them to cloud platforms Who This Book Is For Intermediate data scientists, machine learning engineers, and web developers.

This book provides a comprehensive and accessible introduction to knowledge graphs, which have recently garnered notable attention from both industry and academia. Knowledge graphs are founded on the principle of applying a graph-based abstraction to data, and are now broadly deployed in scenarios that require integrating and extracting value from multiple, diverse sources of data at large scale. The book defines knowledge graphs and provides a high-level overview of how they are used. It presents and contrasts popular graph models that are commonly used to represent data as graphs, and the languages by which they can be queried before describing how the resulting data graph can be enhanced with notions of schema, identity, and context. The book discusses how ontologies and rules can be used to encode knowledge as well as how inductive techniques-based on statistics, graph analytics, machine learning, etc.-can be used to encode and extract knowledge. It covers techniques for the creation, enrichment, assessment, and refinement of knowledge graphs and surveys recent open and enterprise knowledge graphs and the industries or applications within which they have been most widely adopted. The book closes by discussing the current limitations and future directions along which knowledge graphs are likely to evolve. This book is aimed at students, researchers, and practitioners who wish to learn more about knowledge graphs and how they facilitate extracting value from diverse data at large scale. To make the book accessible for newcomers, running examples and graphical notation are used throughout. Formal definitions and extensive references are also provided for those who opt to delve more deeply into specific topics.

Quickly discover solutions to common problems, best practices you can follow, and everything jQuery has to offer. Using a problem-solution approach, this book begins with small initial problems that developers typically face while working with jQuery, and gradually goes deeper to explore more complex problems. The solutions include illustrations and clear, concise explanations of the code. You will learn to traverse and manipulate the DOM effectively, understand how to use arrays, iteration, the event model, and implement animation and visual effects. You'll explore how to use plugins and CSS. Using this book and jQuery, your web sites will be more dynamic and lively. This fully updated second edition teaches you modern jQuery techniques including how to traverse and manipulate the DOM, understand the event model, implement animation, and use sliding effects. jQuery Recipes, Second Edition shows you how to avoid wasting development time and solve problems you may face. It is an invaluable reference to keep by your side as you progress in your jQuery development. Start becoming a jQuery pro with jQuery Recipes today. What You'll Learn Understand the basics of jQuery and how this library works Learn how to traverse and manipulate the DOM to your own requirements Explore jQuery UI techniques including accordion, dialog, slider, date picker and autocomplete Work with popular plugins and CSS to customize and tailor your development Who This Book Is For Ideal for novice or intermediate developers wishing to learn jQuery and have a handy jQuery reference by their side during their development.

It's an exciting time to get involved with MicroPython, the re-implementation of Python 3 for microcontrollers and embedded systems. This practical guide delivers the knowledge you need to roll up your sleeves and create exceptional embedded projects with this lean and efficient programming language. If you're familiar with Python as a programmer, educator, or maker, you're ready to learn-and have fun along the way. Author Nicholas Tollervey takes you on a journey from first steps to advanced projects. You'll explore the types of devices that run MicroPython, and examine how the language uses and interacts with hardware to process input, connect to the outside world, communicate wirelessly, make sounds and music, and drive robotics projects. Work with MicroPython on four typical devices: PyBoard, the micro:bit, Adafruit's Circuit Playground Express, and ESP8266/ESP32 boards Explore a framework that helps you generate, evaluate, and evolve embedded projects that solve real problems Dive into practical MicroPython examples: visual feedback, input and sensing, GPIO, networking, sound and music, and robotics Learn how idiomatic MicroPython helps you express a lot with the minimum of resources Take the next step by getting involved with the Python community

Use React with Firebase to build four beginner-friendly apps. A lot of React tutorials out there today only cover basic web apps, but with additional features the web apps included in this book can be converted into fully scaled startups. You will start with the basics: learn to deploy a React app with Firebase hosting. Next, you will learn to create a fully functional "ToDo" app that will use Firebase database to store a list action items. You will also learn to create a "Stories" app, in which you can show short vertical videos, and a document storage app. Here, we will be able to log in using Google Authentication, and will learn to store files in the app using Firebase storage. Lastly, you will create a career social media app. Your users will be able to log in using email and password authentication. You will learn to use Redux in this project.While creating these web apps, you will employ multiple concepts, including React hooks, React components, and how to use Material UI. You will learn to use Firebase to host your database, as well as hosting your app. With these projects in your portfolio you'll be ready to take your developer skills to the next level. What You'll Learn Use Firebase's powerful services, and how to connect Firebase with React Explore the React ecosystem, including Redux and React hooks Work with MaterialUI, the popular React UI framework Understand how to use Google Authentication techniques in your sites Deploy all sites using simple Firebase hosting Who This Book Is For Developers at the beginning of their career, or anyone who wants to take their React skills to the next level.

JavaScript is the ubiquitous programming language of the Web, and for more than 15 years, "JavaScript: The Definitive Guide" has been the bible of JavaScript programmers around the world. Ideal for JavaScript developers at any level, this book is an all-new excerpt of "The Definitive Guide," collecting the essential parts of that hefty volume into this slim yet dense pocket reference.

The first 9 chapters document the latest version (ECMAScript 5) of the core JavaScript language, covering: Types, values, and variablesOperators, expressions, and statementsObjects and arraysFunctions and classes

The next 5 chapters document the fundamental APIs for using JavaScript with HTML5 and explain how to: Interact with web browser windowsScript HTML documents and document elementsModify and apply CSS styles and classesRespond to user input eventsCommunicate with web serversStore data locally on the user's computer

This book is a perfect companion to "jQuery Pocket Reference."

Create and deploy full-stack Spring Boot applications with React and AWS. This practical and authoritative guide teaches you the fundamentals of Amazon Web Services with no prior experience. You will start by learning the fundamentals of AWS, including EC2, S3, IAM, and load balancer. Next, you will learn to deploy a Spring Boot REST API to AWS with Elastic Beanstalk, which will give you the ability to build and deploy a Spring Boot application. You will explore the RDS relational database and create an instance of a MySQL database in AWS with RDS. You will then deploy a Spring Boot application to MySQL in AWS and deploy a full-stack Spring Boot React application to AWS using Elastic Beanstalk and S3. Lastly, you will be introduced to ELB, CloudWatch, and Route 53. By the end of this book you will understand full-stack Spring Boot React applications and their deployment. If you prefer "learning by coding" then Spring Boot with React and AWS is the book for you. What You'll Learn Review the fundamentals of Amazon Web Services Install a Spring Boot REST API with CRUD operation to AWS using AWS Elastic Beanstalk Deploy a full-stack Spring Boot React application to AWS using AWS Elastic Beanstalk and S3 Work with MySQL as a database in AWS using RDS Use Spring Boot with React and AWS Who This Book Is For Ideal for readers who have some programming experience with Java, Spring Boot, and React, and who now want to deploy a full-stack Spring Boot React application to AWS using AWS Elastic Beanstalk and S3.

The enthusiasm behind Node doesn't just reflect the promise of server-side JavaScript. Developers also have the potential to create elegant applications with this open source framework that are much easier to maintain. Follow author Mike Wilson as he builds a social network application oriented toward real-time updates. Through this, the book shows you how to build complete applications that combine the strengths of Node, the MongoDB scalable storage solution, and the Backbone toolkit for clean application design in the browser. Gain examples of all three tools in real development situations Learn how to build clean, manageable code Use a complete application toolkit from start to finish, server to client Understand the power of JavaScript in a variety of contexts

Learn to leverage the power of Svelte to produce web applications that are efficient and fast. This project-oriented book simplifies creating sites using Svelte from start to finish, with little more than a text editor and familiar languages such as HTML, CSS, and JavaScript. It equips you with a starting toolset that you can use to develop future projects, incorporate into your existing workflow, and allow you to take your websites to the next level.Practical Svelte is an excellent resource for getting acquainted with creating and manipulating websites or online applications using a component framework approach. It takes the view that we don't have to create something complex and unwieldy. We can build something quickly, using less code than some of its competitors, and extend it using the power of the API and plugins over time, without sacrificing speed or features. You will learn how to use the Svelte framework to rapidly create and deploy websites or online applications that are performant, with the minimum of fuss and using existing tools already available in the browser, get up to speed with individual features of the Svelte framework, and work through a series of small projects that will combine to produce a finished site at the end of the book - this to help consolidate skills from day one and create something that you can use as a basis for future projects. What You Will Learn Understand why Svelte's popularity makes it the go-to framework for constructing applications Learn how to scaffold and implement web sites or online applications using Svelte Create reusable components using Svelte that are interoperable with other frameworks and can solve real-world problems Perform automated testing and deployment using tools such as CI/CD testing Work through some mini projects from start to finish, understanding what we can achieve using Svelte and where we may need to bring other tools into play Who This Book Is For Website developers who are already familiar with JavaScript, CSS, and HTML and are keen to learn how to leverage the Svelte component framework to quickly create web sites or online applications with little more than a text editor. It's perfect for development teams who do not want to follow the mold and use a credible alternative to React or Angular.

Based on the authors market leading data structures books in Java and C++, this book offers a comprehensive, definitive introduction to data structures in Python by authoritative authors. Data Structures and Algorithms in Python is the first authoritative object-oriented book available for Python data structures. Designed to provide a comprehensive introduction to data structures and algorithms, including their design, analysis, and implementation, the text will maintain the same general structure as Data Structures and Algorithms in Java and Data Structures and Algorithms in C++. * Begins by discussing Python s conceptually simple syntax, which allows for a greater focus on concepts. * Employs a consistent object-oriented viewpoint throughout the text. * Presents each data structure using ADTs and their respective implementations and introduces important design patterns as a means to organize those implementations into classes, methods, and objects. * Provides a thorough discussion on the analysis and design of fundamental data structures. * Includes many helpful Python code examples, with source code provided on the website. * Uses illustrations to present data structures and algorithms, as well as their analysis, in a clear, visual manner. * Provides hundreds of exercises that promote creativity, help readers learn how to think like programmers, and reinforce important concepts. * Contains many Python-code and pseudo-code fragments, and hundreds of exercises, which are divided into roughly 40% reinforcement exercises, 40% creativity exercises, and 20% programming projects.

Learn how to build complete client-side applications with ClojureScript, the Clojure language variant that compiles to optimized JavaScript. This hands-on introduction shows you how ClojureScript not only has similarities to JavaScript--without the flaws--but also supports the full semantics of its parent language. You'll delve into ClojureScript's immutable data structures, lazy sequences, first-class functions, macros, and support for JavaScript libraries.

No previous experience with Clojure or ClojureScript is necessary. If you're familiar with JavaScript, HTML, CSS, and the DOM, you'll quickly discover that ClojureScript has the same reach as JavaScript, but with more power.Start writing ClojureScript code with the Leiningen build systemLearn how the ClojureScript compiler works to produce optimized JavaScriptUse JavaScript functions and libraries directly from ClojureScript codeExplore functions in Clojure's sequence library such as map, reduce, and filterUse macros to define new control structures or embed domain-specific languagesCompile manually or script your own workflow with ClojureScript's compiler toolsIntegrate ClojureScript with Clojure on the JVM to build powerful client-server applications

Learn how to use the MERN stack (MongoDB, Express.js, React, and Node) to build five fully functioning web apps for dating, video sharing, messaging, and social media. While creating these web apps, you'll learn key development concepts including how to use React hooks, Redux, MongoDB, Express, Heroku, Firebase, Material UI, and Google authentication. By expanding your portfolio with the projects you create, you will be well equipped as front-end developer. You will first create a dating site with a swiping feature and chat functionality. You will then build a video sharing app with videos displaying vertically. Next, you will learn to build an awesome messaging web app. Users will be able to chat in real time, as well as log in to their account using Google authentication. You will also create a photo sharing app and social media web apps with the ability to post images with captions and log in using email and password authentication. Most MERN tutorials out there today cover basic web apps but it is capable of so much more - learn how to use this stack to its full potential and build projects that can be converted into full scaled start-ups with additional features. What You'll Learn Work with React hooks and React router Examine powerful MongoDB services for easy to use and setup Create routes using Node and host on Heroku Study different authentication techniques Deploy all sites using simple Firebase hosting Use the powerful React ecosystem to add functionalities to your apps Who This book Is For Those who have just started their career in web development and have basic knowledge of the core web technologies: HTML, CSS, and JavaScript. Those with basic React development and feel ready to explore its capabilities further.

This book describes a set of methods, architectures, and tools to extend the data pipeline at the disposal of developers when they need to publish and consume data from Knowledge Graphs (graph-structured knowledge bases that describe the entities and relations within a domain in a semantically meaningful way) using SPARQL, Web APIs, and JSON. To do so, it focuses on the paradigmatic cases of two middleware software packages, grlc and SPARQL Transformer, which automatically build and run SPARQL-based REST APIs and allow the specification of JSON schema results, respectively. The authors highlight the underlying principles behind these technologies-query management, declarative languages, new levels of indirection, abstraction layers, and separation of concerns-, explain their practical usage, and describe their penetration in research projects and industry. The book, therefore, serves a double purpose: to provide a sound and technical description of tools and methods at the disposal of publishers and developers to quickly deploy and consume Web Data APIs on top of Knowledge Graphs; and to propose an extensible and heterogeneous Knowledge Graph access infrastructure that accommodates a growing ecosystem of querying paradigms.

Short and comprehensive text on how to master python Perfect for beginners or experts who need a refresher

With this convenient, single-source reference, you'll learn how to develop instrumentation software with Python that lets you monitor or control devices in the physical world. Whether you need to acquire data from a hardware device or automate its functions, this book shows you how to build interfaces that include everything from software to wiring. You get step-by-step instructions, clear examples, and hands-on tips and hints for interfacing a PC to the real world, along with advice to help you avoid common pitfalls. Use the book's hardware survey to discover the interface type for your particular device, and then follow detailed examples to develop the interface with Python and C. Organized by interface type, data processing activities, and user interface implementations, this book is for anyone who works with instrumentation, robotics, data acquisition, or process control. * Understand how to define the scope of an application and determine the algorithms necessary -- and why it's important * Learn how to use industry-standard interfaces such as RS-232, RS-485, and GPIB * Create low-level extension modules in C to interface Python with a variety of hardware and test instruments * Explore the console, curses, TkInter, and wxPython for graphical and text-based user interfaces * Use open source software tools and libraries to reduce cost and avoid implementing functionality from scratch

Go beyond the basics of D3.js to create maintainable, modular, and testable charts and to package them into a library that can be distributed as open source software or kept for private use. This book will show you how to transform regular D3.js chart code into reusable and extendable modules. You know the basics of working with D3.js, but it's time to become a professional D3.js practitioner. This book is your launching pad to refactoring code, composing complex visualizations from small components, working as a team with other developers, and integrating charts with a Continuous Integration system. You'll begin by creating a production-ready chart using D3.js v5, ES2015, and a test-driven approach and then move on to using and extending Britecharts, the reusable charting library based on Reusable API patterns. Finally, you'll see how to use D3.js along with React to document and build your charts to compose a charting library you can release into the NPM repository. With Pro D3.js, you'll become an accomplished D3.js developer in no time. What You Will Learn Create v5 D3.js charts with ES2016 and unit tests Develop modular, testable and extensible code with the Reusable API pattern Work with and extend Britecharts, a reusable charting library created at Eventbrite Use Webpack and npm to create and publish a charting library from your own chart collections Write reference documentation and build a documentation homepage for your library. Who This Book Is For Data scientists, data visualization engineers, and frontend developers with a fundamental knowledge of D3.js and some experience with JavaScript, as well as data journalists and consultants.

Build and design microservices using Java and the Red Hat Quarkus Framework. This book will help you quickly get started with the features and concerns of a microservices architecture. It will introduce Docker and Kubernetes to help you deploy your microservices. You will be guided on how to install the appropriate tools to work properly. For those who are new to enterprise development using Quarkus, you will be introduced to its core principles and main features through a deep step-by-step tutorial. For experts, this book offers some recipes that illustrate how to split monoliths and implement microservices and deploy them as containers to Kubernetes. By the end of reading this book, you will have practical hands-on experience of building microservices using Quarkus and you will master deploying them to Kubernetes. What You Will Learn Work with Quarkus and GraalVM Split a monolith using the domain-driven design approach Implement the cloud and microservices patterns Rethink the deployment process Introduce containerization, Docker, and Kubernetes to your toolkit Boost microservices efficiency and performance with Azure Play with Quarkus and distributed application runtimes Who This Book Is For Java developers who want to build microservices using Red Hat Quarkus and who want to deploy them in Kubernetes.

Designing an API is complicated to begin with, but evolving your API design over time makes the process even more difficult. There are several books on the topic, but none that guide you through key decisions for designing and building APIs for specific audiences and types of products. Well, until now, that is. Using case studies from companies such as Slack, Stripe, Facebook, and Github, this practical guide shows you how to navigate complex decisions when building, scaling, and evolving your own APIs. You'll learn best practices for designing APIs that developers will love, and discover how to evolve your APIs as your product grows. Developers, architects, tech leads, product managers, and engineering managers will: Examine strategies to expose data through web APIs, using webhooks, websockets, and HTTP Learn how to evolve APIs while keeping them consistent Be able to scale APIs with pagination and rate limiting Handle security, performance, monitoring, and testing Build a thriving ecosystem around your API

If you're a solo website designer or part of a small team itching to build interesting projects with Drupal, this concise guide will get you started. Drupal's learning curve has thrown off many experienced designers, particularly the way it handles design challenges. This book shows you the lifecycle of a typical Drupal project, with emphasis on the early stages of site planning. Learn how to efficiently estimate and set up your own project, so you can focus on ways to make your vision a reality, rather than let project management details constantly distract you. Plan and estimate your project by discovering your client's goals and audience perceptions Discover how Drupal works under the hood, and learn basic DrupalSpeak Frame the UX design challenge through a deeper understanding of your site's intended users Get real content for your project as early as possible--before you start prototyping Choose the right modules for your project, and learn about several go-to modules Understand how to walk clients through the Drupal design and development process

This book is a guide to designing and building knowledge graphs from enterprise relational databases in practice.\ It presents a principled framework centered on mapping patterns to connect relational databases with knowledge graphs, the roles within an organization responsible for the knowledge graph, and the process that combines data and people. The content of this book is applicable to knowledge graphs being built either with property graph or RDF graph technologies. Knowledge graphs are fulfilling the vision of creating intelligent systems that integrate knowledge and data at large scale. Tech giants have adopted knowledge graphs for the foundation of next-generation enterprise data and metadata management, search, recommendation, analytics, intelligent agents, and more. We are now observing an increasing number of enterprises that seek to adopt knowledge graphs to develop a competitive edge. In order for enterprises to design and build knowledge graphs, they need to understand the critical data stored in relational databases. How can enterprises successfully adopt knowledge graphs to integrate data and knowledge, without boiling the ocean? This book provides the answers.

Use Flybase and Twilio with Node.js to build real-time solutions and understand how real-time web technologies work. Written by the founder of Flybase, this book offers you practical solutions for communicating effectively with users on the modern web. Flybase.io is a web platform, used to store and retrieve data in real-time, as well as to send and receive real-time events such as triggers for incoming calls, incoming messages, agents logging off, etc. You will learn to send daily SMS messages, build an SMS call center to provide support to users, and build a call center to handle incoming and outgoing phone calls from the browser. You'll also build a group calling system to let groups send messages to each other: handy for managing events. Real-Time Twilio brings to light using the winning combination of Flybase and Twilio with Node.js for anyone with basic web development skills. What You'll Learn Develop web apps with Flybase and Twilio Build a live blogging tool and a group chat app Create a click-to-call call center and a Salesforce-powered call center Send daily SMS reminders Develop a real-time call tracking dashboard Who This Book Is For Those who want to learn to use Twilio and who wants to learn real-time development.

If you're an advanced beginner or intermediate JavaScript developer, JavaScript Enlightenment will solidify your understanding of the language - especially if you use a JavaScript library. In this concise book, JavaScript expert Cody Lindley (jQuery Cookbook) provides an accurate view of the language by examining its objects and supporting nuances. Libraries and frameworks help you build web applications quickly and efficiently, but when things go wrong or performance becomes an issue, knowing how and why they work is critical. If you're ready to go under the hood and get your hands dirty with JavaScript internals, this is your book. Get a short and digestible summary of ECMA-262, Edition 3, backed by real code you can run instantly Examine the creation of JavaScript objects Learn complex values, primitive values, scope, and inheritance Understand the importance of the head object Work with string, number, and Boolean objects and values Discover how to use the null value and the built-in math object Get into the details - beyond Mozilla's reference guide for JavaScript 1.5