วันเสาร์ที่ 14 มีนาคม พ.ศ. 2552

History of Microsoft Internet Explorer Browsers (IE) Version 5-8

Version 5 / Internet Explorer 5

Internet Explorer 5.0, launched on March 18, 1999, and subsequently included with Windows 98 Second Edition and bundled with Office 2000, was another significant release that supported bi-directional text, ruby characters, XML, XSLT and the ability to save web pages in MHTML format. IE5 was bundled with Outlook Express 5. Also, with the release of Internet Explorer 5.0, Microsoft released the first version of XMLHttpRequest, giving birth to Ajax (even though the term "Ajax" wasn't coined until years later.) It was the last with a 16-bit version.

Internet Explorer 5.01, a bug fix version, was released in December 1999. Windows 2000 includes this version.
Internet Explorer 5.5 followed in July 2000, improving its print preview capabilities, CSS and HTML standards support, and developer APIs; this version was bundled with Windows Me. Version 5.5 also included support for 128-bit encryption. However, Version 5 was the last version for Mac and UNIX. Version 5.5 was the last to have Compatibility Mode, which allowed Internet Explorer 4 to be run side by side with the 5.x. The IE team consisted of over 1000 people by 1999, with funding on the order of 100 million USD per year.

Version 6 / Internet Explorer 6

Internet Explorer 6.0 was released on August 27, 2001, a few months before Windows XP. This version included DHTML enhancements, content restricted inline frames, and partial support of CSS level 1, DOM level 1 and SMIL 2.0 The MSXML engine was also updated to version 3.0. Other new features included a new version of the Internet Explorer Administration Kit (IEAK), Media bar, Windows Messenger integration, fault collection, automatic image resizing, P3P, and a new look-and-feel that was in line with the "Luna" visual style of Windows XP, when used in Windows XP.
Internet Explorer 6.0 SP1 offered several security enhancements and coincided with XP SP1 patch release. In 2002, the Gopher protocol was disabled and support for it was dropped in Internet Explorer 7

Internet Explorer 6.0 SV1 ('6 SP2') came out August 6, 2004 for Windows XP SP2 and offered various security enhancements and new color buttons on the user interface. IE6 updated the original 'blue e' logo to a lighter blue and more 3-d look.

Version 7 / Internet Explorer 7


Internet Explorer 7 was released on October 18, 2006. It includes bug fixes, enhancements to its support for web standards, tabbed browsing with tab preview and management, a multiple-engine search box, a web feeds reader, Internationalized Domain Name support (IDN), and antiphishing filter. With IE7, Internet Explorer has been decoupled from the Windows Shell - unlike previous versions, the Internet Explorer ActiveX control is not hosted in the Windows Explorer process, but rather runs in a separate Internet Explorer process. It is included with Windows Vista and Windows Server 2008, and is available for Windows XP Service Pack 2 and later, and Windows Server 2003 Service Pack 1 and later.

The original release of Internet Explorer 7 required the computer to pass a Windows Genuine Advantage validation check prior to installing, but on October 5, 2007, Microsoft removed this requirement. As some statistics show, by mid-2008, Internet Explorer 7 exceeded Internet Explorer 6 in number of users.

Version 8 (Hot and New!)


Internet Explorer 8.0 is the latest version of Internet Explorer and has been in development since August 2007 at the latest. On March 5, 2008, the first public beta (Beta 1) was released to the general public. It supports Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista and Windows Server 2008 on both 32-bit as well as 64-bit architectures.
Security, ease of use, and improvements in RSS, CSS, and Ajax support are Microsoft's priorities for IE8. It includes much stricter compliance with web standards, including a planned full Cascading Style Sheets 2.1 compliance for the release version. All these changes allow Internet Explorer 8 to pass the Acid2 test. However, to prevent compatibility issues, IE8 also includes the IE7 rendering behavior. Sites that expect IE7 quirks can disable the IE8's breaking changes by including a meta element.
IE8 also includes numerous improvements to JavaScript support as well as performance improvements. It includes support for Activities - which allow supported web applications to be invoked without explicitly navigating to them - and WebSlices - which allows portions of page to be subscribed to and monitored from a redesigned Favorites Bar. An enhanced phishing filter (now called Safety filter) blocks access to sites known to contain malware.

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