Web Technology documents
This specification is intended for authors of documents and scripts that use the features defined in this
specification, implementors of tools that operate on pages that use the features defined in this specification, and
individuals wishing to establish the correctness of documents or implementations with respect to the requirements of
This document is probably not suited to readers who do not already have at least a passing familiarity with Web technologies, as in places it sacrifices clarity for precision, and brevity for completeness. More approachable tutorials and authoring guides can provide a gentler introduction to the topic.
HTML Living Standard — Last Updated 20 July 2016
What is the Document Object Model?
The Document Object Model is a platform- and language-neutral interface that will allow programs and scripts to dynamically access and update the content, structure and style of documents. The document can be further processed and the results of that processing can be incorporated back into the presented page. This is an overview of DOM-related materials here at W3C and around the web.
Why the Document Object Model?
"Dynamic HTML" is a term used by some vendors to describe the combination of HTML, style sheets and scripts that allows documents to be animated. The W3C has received several submissions from members companies on the way in which the object model of HTML documents should be exposed to scripts. These submissions do not propose any new HTML tags or style sheet technology. The W3C DOM Activity is working hard to make sure interoperable and scripting-language neutral solutions are agreed upon.
Document Object Model (DOM)
HTML5 is the latest and most enhanced version of HTML. Technically, HTML is not a
programming language, but rather a markup language. This tutorial gives very good
understanding on HTML5.
HTML5 is the next major revision of the HTML standard superseding HTML 4.01, XHTML 1.0, and XHTML 1.1. HTML5 is a standard for structuring and presenting content on the World Wide Web. HTML5 is a cooperation between the World Wide Web Consortium (W3C) and the Web Hypertext Application Technology Working Group (WHATWG). The new standard incorporates features like video playback and drag-and-drop that have been previously dependent on third-party browser plug-ins such as Adobe Flash, Microsoft Silverlight, and Google Gears.
The latest versions of Apple Safari, Google Chrome, Mozilla Firefox, and Opera all support many HTML5 features and Internet Explorer 9.0 will also have support for some HTML5 functionality. The mobile web browsers that come pre-installed on iPhones, iPads, and Android phones all Tutorials Point, Simply Easy Learning have excellent support for HTML5.
HTML5 Tutorials Point
The purpose of this book is to teach you the fundamentals of Java programming. It uses a step-bystep
approach complete with numerous examples, self tests, and projects. It assumes no previous
The book starts with the basics, such as how to compile and run a Java program. It then discusses the keywords, features, and constructs that form the core of the Java language. You’ll also find coverage of some of Java’s most advanced features, including multithreaded programming and generics. An introduction to the fundamentals of Swing and JavaFX concludes the book. By the time you finish, you will have a firm grasp of the essentials of Java programming.
It is important to state at the outset that this book is just a starting point. Java is more than just the elements that define the language. Java also includes extensive libraries and tools that aid in the development of programs. To be a top-notch Java programmer implies mastery of these areas, too. After completing this book, you will have the knowledge to pursue any and all other aspects of Java.
This document first began as an effort to help teams within Google,
but we thought it'd be just as useful to webmasters that are new to
the topic of search engine optimization and wish to improve their
sites' interaction with both users and search engines.
Although this guide won't tell you any secrets that'll automatically rank your site first for queries in Google (sorry!), following the best practices outlined below will make it easier for search engines to crawl, index and understand your content.
Search engine optimization is often about making small modifications to parts of your website. When viewed individually, these changes might seem like incremental improvements, but when combined with other optimizations, they could have a noticeable impact on your site's user experience and performance in organic search results.
You're likely already familiar with many of the topics in this guide, because they're essential ingredients for any web page, but you may not be making the most out of them. Even though this guide's title contains the words "search engine", we'd like to say that you should base your optimization decisions first and foremost on what's best for the visitors of your site. They're the main consumers of your content and are using search engines to find your work.
Focusing too hard on specific tweaks to gain ranking in the organic results of search engines may not deliver the desired results. Search engine optimization is about putting your site's best foot forward when it comes to visibility in search engines, but your ultimate consumers are your users, not search engines.
Your site may be smaller or larger than our example site and offer vastly different content, but the optimization topics we discuss below should apply to sites of all sizes and types.
We hope our guide gives you some fresh ideas on how to improve your website, and we'd love to hear your questions, feedback, and success stories in the Google Webmaster Help Forum.
Search Engine Optimization Starter Guide - Google
This specification defines Cascading Style Sheets, level 2 revision 1 (CSS 2.1).
CSS 2.1 is a style sheet language that allows authors and users to attach style (e.g., fonts and spacing) to structured documents (e.g., HTML documents and XML applications). By separating the presentation style of documents from the content of documents, CSS 2.1 simplifies Web authoring and site maintenance.
CSS 2.1 builds on CSS2 [CSS2] which builds on CSS1 [CSS1]. It supports media-specific style sheets so that authors may tailor the presentation of their documents to visual browsers, aural devices, printers, braille devices, handheld devices, etc. It also supports content positioning, table layout, features for internationalization and some properties related to user interface.
CSS 2.1 corrects a few errors in CSS2 (the most important being a new definition of the height/width of absolutely positioned elements, more influence for HTML’s "style" attribute and a new calculation of the ’clip’ property), and adds a few highly requested features which have already been widely implemented. But most of all
CSS 2.1 represents a "snapshot" of CSS usage: it consists of all CSS features that are implemented interoperably at the date of publication of the Recommendation.
CSS 2.1 is derived from and is intended to replace CSS2. Some parts of CSS2 are unchanged in CSS 2.1, some parts have been altered, and some parts removed. The removed portions may be used in a future CSS3 specification. Future specs should refer to CSS 2.1 (unless they need features from CSS2 which have been dropped in CSS 2.1, and then they should only reference CSS2 for those features, or preferably reference such feature(s) in the respective CSS3 Module that includes those feature(s)).
W3C CSS 2.1 Specification
This specification defines the HyperText Markup Language (HTML), version 4.0, the publishing language
of the World Wide Web.
In addition to the text, multimedia, and hyperlink features of the previous versions of HTML, HTML 4.0 supports more multimedia options, scripting languages, style sheets, better printing facilities, and documents that are more accessible to users with disabilities.
HTML 4.0 also takes great strides towards the internationalization of documents, with the goal of making the Web truly World Wide.
HTML 4.0 is an SGML application conforming to International Standard ISO 8879 -- Standard Generalized Markup Language [ISO8879] [p.327] .
W3C HTML 40 Specification
Is this HTML5? In short: Yes.
In more length: The term "HTML5" is widely used as a buzzword to refer to modern Web technologies, many of which (though by no means all) are developed at the WHATWG.
This document is one such; others are available from the WHATWG specification index.
WHATWG HTML Standard
This page was last updated January 6th, 2018 by kim
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