This book shows how to build front-end web applications with plain JavaScript, not using any (third-party) framework or library. A front-end web application can be provided by any web server, but it is executed on the user's computer device (smartphone, tablet or notebook), and not on the remote web server. Typically, but not necessarily, a front-end web application is a single-user application, which is not shared with other users. Content: I. Associations　　　 20. Reference Properties and Unidirectional Associations　　　 21. Implementing Unidirectional Functional Associations　　　 22. Implementing Unidirectional Non-Functional Associations　　　 23. Practice Projects　　　 24. Bidirectional Associations　　　 25. Implementing Bidirectional Associations　　　 26. Part-Whole Associations　　　 27. Lessons Learned　　　 28. Practice ProjectsII. Inheritance in Class Hierarchies　　　 29. Subtyping and Inheritance　　　 30. Implementing Class Hierarchies in a Plain JavaScript Front-End App　　　 31. Implementing Class Hierarchies in a Java EE Back-End App　　　 32. Practice ProjectsIII. Model-Based App Development

Today, web applications are the most important type of software applications. This textbook shows how to design and implement them, using a model-based engineering approach that covers general information management concepts and techniques and the two most relevant technology platforms: JavaScript and Java. The book provides an in-depth tutorial for theory-underpinned and example-based learning by doing it yourself, supported by quiz questions and practice projects. Volume 1 provides an introduction to web technologies and model-based web application engineering, discussing the information management concepts of constraint-based data validation, enumerations and special datatypes. Volume 2 discusses the advanced information management concepts of associations and inheritance in class hierarchies.

Web apps are designed using UML class diagrams and implemented with two technologies: JavaScript for front-end (and distributed NodeJS) apps, and Java (with JPA and JSF) for back-end apps. The six example apps discussed in the book can be run, and their source code downloaded, from the book's website.