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View Full Version : طرز کار وب بروزر ها



1485159
شنبه 01 خرداد 1389, 22:58 عصر
سلام
من میخوام یه وب بروزر بسازم:لبخند::لبخند: البته بدون استفاده از کامپوننت و هسته دیگر مرورگر ها.
میشه راهنمایی کنید که بروزر ها چطوری کار میکنن؟

مهران رسا
شنبه 01 خرداد 1389, 23:14 عصر
http://www.informit.com/articles/article.aspx?p=680307

1485159
شنبه 01 خرداد 1389, 23:23 عصر
سایتش باز نمیشه.

مهران رسا
شنبه 01 خرداد 1389, 23:51 عصر
Like much of the Internet, the World Wide Web operates on a client/server model. You run a web client on your computer—called a web browser—such as Microsoft’s Internet Explorer or Firefox. That client contacts a web server and requests information or resources. The web server locates and then sends the information to the web browser, which displays the results.

When web browsers contact servers, they’re asking to be sent pages built with Hypertext Markup Language (HTML). Browsers interpret those pages and display them on your computer. They also can display applications, programs, animations, and similar material created with programming languages such as Java and ActiveX, scripting languages such as JavaScript, and techniques such as AJAX.

Sometimes, home pages contain links to files the web browser can’t play or display, such as sound or animation files. In that case, you need a plug-in or a helper application. You configure your web browser or operating system to use the helper application or plug-in whenever it encounters a sound, animation, or other type of file the browser can’t run or play.

Over the years, web browsers have become increasingly sophisticated. Browsers are now full-blown software suites that can do everything from videoconferencing to letting you create and publish HTML pages. Browsers now also blur the line between your local computer and the Internet—in essence, they can make your computer and the Internet function as a single computer system.

Increasingly, a browser is not just a single piece of software, but an entire suite. The newest version of Internet Explorer, for example, includes security features such as an anti-phishing filter. The Firefox browser has a companion piece of email software called Thunderbird that can be downloaded as well.

When browsing the Internet, one of the most frustrating experiences is the error messages browsers display when they’re having trouble contacting a website. Depending on which browser you use, and which version of the browser you’re using, those messages might differ. Sometimes browsers display error messages in plain English—but more often they don’t. The final illustration in this chapter lists the most common browser error messages—and what they mean.

How a Web Browser Works



http://www.informit.com/content/images/chap18_9780789736260/elementLinks/red_icon.jpg Web browsers consist of client software that runs on your computer and displays home pages on the Web. There are clients for a wide variety of devices, including Windows, Macintosh, and Unix computers.

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NOTE
Web browsers can’t display some types of files on the Internet, notably some kinds of multimedia files, such as sound, video, and animation files. (A common file type like this is called Flash.) To view or play these files, you need what is called a helper application or plug-in. You must configure your web browser or operating system to launch these helper applications and plug-ins whenever you click an object that needs them to be viewed. More often than not, when you install the application or plug-in, it will configure itself properly.


NOTE
The meanings of tags are easily decipherable. Every HTML tag, or instruction, is surrounded by a less-than and a greater-than sign—<P>. Often tags appear in pairs, the beginning tag and the ending tag. They are identical except for a simple slash in the ending tag. So, a paragraph of text frequently is surrounded by tags such as this: <P> Paragraph of text.</P>. Also, tags are not case sensitive. <P> equals <p>.



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