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Questions and Answers
What is the main purpose of HTML5's new elements?
What is the main purpose of HTML5's new elements?
- To support continuous background connection process
- To identify and organize each part of the document body (correct)
- To provide clientside storage and caching functionality
- To provide new visual styles to document elements
What is the role of Cascading Style Sheets (CSS)?
What is the role of Cascading Style Sheets (CSS)?
- To provide semantic meaning to a document
- To provide structural elements to a document
- To provide visual styles to document elements (correct)
- To provide local storage functionality
What is the benefit of Web workers in HTML5?
What is the benefit of Web workers in HTML5?
- To provide local storage functionality
- To make JavaScript efficient (correct)
- To provide advanced selectors and dropshadows
- To provide native support for audio and video
What is the advantage of HTML5's new form controls?
What is the advantage of HTML5's new form controls?
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What is the purpose of HTML5's content specific elements?
What is the purpose of HTML5's content specific elements?
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Study Notes
HTML Evolution
- HTML has evolved over the years with the introduction of improved sets of standards and specifications
- Versions of HTML include: • HTML 3.0 • HTML 3.2 • HTML 4.0 • HTML5.0
HTML5 Features
- Basic rules for HTML5 include: • Introduction to new features should be based on HTML, CSS, DOM, and JavaScript • Device independence • More markup to be used to replace scripting • Better error handling capabilities • Need for external plugins to be reduced • Better visibility to the public development process
HTML5 Page Layout
- HTML5 contains a head section containing unseen elements and a body section containing visible elements
- The
<div>tag was often used to present data in an organized manner - HTML5 includes new elements that identify and organize each part of the document body
CSS Basics
- CSS is a rule-based language that specifies formatting instructions for content in an HTML document
- CSS defines the layout and formatting of content in a separate file with a .css extension
- Allows rules from different .css files to be merged or edited
Benefits of CSS
- Device independence
- Code re-usability
- Less HTML code
Working of CSS
- User requests a web page from the browser using a URL
- Server responds with the HTML file and related files
- Browser executes the CSS code using the rendering engine and applies styles to CSS files
- Web page is then displayed to the browser
JavaScript Functionality
- Allows users to create a 2D drawable surface in a page without using plug-ins
- Uses Web Workers to turbo charge JavaScript code to perform advanced computation
- Accesses any web service and brings back data to the application in real-time
New Features of HTML5
- Provides client-side storage and caching functionality
- Provides new features for mobile applications
- Provides new features in CSS such as advanced selectors, drop-shadows, and so on
- Gets rid of plugins and uses native support for audio and video
- Uses the Web worker feature to make JavaScript efficient
- Helps to create rich internet clients using plug-ins
- Provides descriptive semantics
