8. “A W3C Recommendation is a specification
or set of guidelines that, after extensive
consensus-building, has received the
endorsement of W3C Members and the
Director. W3C recommends the wide
deployment of its Recommendations.”
– W3C
9. • Valid HTML/XHTML code
• Semantically correct code
• Separation of content, presentation
and interaction
11. • Quirks Mode
• Standards Mode
(HTML 5: No Quirks Mode)
• Almost Standards Mode
(HTML 5: "Limited Quirks Mode")
• IE 7 Mode
("mostly" a frozen copy of the mode that was the standards mode in IE7)
• XML Mode
For the application/xhtml+xml Content-Type (not available in Internet
Explorer)
15. “I have a dream for the Web [in which
computers] become capable of analyzing all
the data on the Web – the content, links, and
transactions between people and
computers.”
– Tim Berners-Lee, 1999
40. var link = document.createElement("a");
link.innerHTML = "Get more content";
link.onclick = function () {
// JavaScript magic
};
document.body.appendChild(link);
66. # Alternative 1
ExpiresActive On
ExpiresByType text/css "access plus 3 days"
ExpiresByType application/x-javascript "access
plus 3 days"
ExpiresByType image/gif "access plus 3 days"
ExpiresByType image/png "access plus 3 days"
ExpiresByType image/jpeg "access plus 3 days"
# Alternative 2
ExpiresActive On
ExpiresDefault "access plus 3 days
84. • 31 October 2005:
Safari 2.0.2
• 28 March 2006:
Konqueror 3.5.2
• 20 June 2006:
Opera 9.0
• 17 June 2008:
Mozilla Firefox 3.0
• 19 March 2009:
Internet Explorer 8