Web Applications with Javascript or Java

11Implementing Enumeration Attributes in a Plain JS Web App

In this chapter, we show how to build a front-end web application with enumeration attributes, using plain JavaScript. In addition to the topic of enumeration attributes, we also show how to deal with multi-valued attributes because in many cases, enumeration attributes are multi-valued.

11.1New Issues

Compared to the Validation App137 discussed in Part 2, we now deal with the following new issues:

1. We replace the ES5 constructor-based class definition of our model class Book with a corresponding ES6 class definition.
2. Instead of defining explicit setters we now make use of the ES5 feature of defining implicit get/set methods for properties.
3. Enumeration datatypes have to be defined ...