Building Front-End Web Applications with Plain JavaScript/

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Serialization and Data Management in Model Code

Serialization and Data Management in Model Code

Let’s learn how to write the serialization function and how to perform data management for the application.

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Write a serialization function

The object serialization function toString() now needs to include the values of enumeration attributes.

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class Book {
 ...
  toString() {
    return "Book{ ISBN:" + this.isbn + ", title:" + this.title +
      ", originalLanguage:" + this.originalLanguage +
      ", otherAvailableLanguages:" +
      this.otherAvailableLanguages.toString() +
      ", category:" + this.category +
      ", publicationForms:" +
      this.publicationForms.toString() + "}";
  }
 ...
}

Notice that for multi-valued enumeration attributes, we call the toString() function predefined for JS arrays.

Data

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