HTML - (Specification | API | Standard )

Conformance requirements

There are conformance requirements that apply to:

  • producers, for example authors and the documents they create,
  • and consumers, for example Web browsers.


The API for HTML developed by browser vendors were specified and published under the name:

  • DOM Level 1 (in 1998)
  • DOM Level 2 Core
  • and DOM Level 2 HTML.

To avoid exposing Web authors to the complexities of multithreading, the HTML and DOM APIs are designed such that the execution of all scripts is serialized.

An XML DTDs cannot express all the conformance requirements of this specification.

Documentation / Reference

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