Idiosyncrasies of the HTML parser
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Last updated on 2019-10-03
About the Book
The HTML parser is a piece of software that processes HTML markup and produces an in-memory tree representation (known as the DOM).
The HTML parser has many strange behaviors. For more than a decade, the HTML standards stated that HTML was an application of SGML, while web browsers used a very different approach to parsing HTML. Then, the WHATWG specified that the HTML parser was much closer to what contemporary web browsers did. Today, all browsers have conforming HTML parsers. This book will highlight the ins and outs of the HTML parser, and contains almost-impossible quizzes.
HTML is not only used by basically all of the web, but it is also part of many modern applications. The HTML parser is part of the foundation of the web platform. HTML parsers can be found in web browsers, but are also implemented in various languages and platforms.
- Intended audience
- Practical application
- About the author
Chapter 1. Introduction
- The DOM, parsing, and serialization
- History of HTML parsers
- The HTML parser is specified
- The HTML syntax
Chapter 2. The HTML parser
- Overview of the HTML parser
- Error handling
- Detecting character encoding
- Preprocessing the input stream
- Tree construction
- Speculative parsing
- Tags that are no longer supported
Chapter 3. Microsyntaxes
- Image map coordinates
- Responsive images
- Meta refresh
Chapter 4. DOM manipulation
- Using DOM APIs
- Using the template element
- Sanitizing HTML
- Appeasing the XML gods
- Chapter 5. Serializing
- Appendix A. Implementations
Appendix B. Conformance checkers
- DTD-based validators
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