March 2002
Intermediate to advanced
592 pages
15h 52m
English
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The Client Tier
The client tier in the three-tier architecture model is usually a web browser. Web browser software processes and displays HTML resources, issues HTTP requests for resources, and processes HTTP responses. As discussed earlier, there are significant advantages to using a web browser as the thin-client layer, including easy deployment and support on a wide range of platforms.
There are many browser products available, and each browser product has different features. The two most popular windowing-based browsers are Netscape and Internet Explorer. While we won’t describe all the features of web browsers, they have a common basic set:
All web browsers are HTTP clients that send requests and display responses from web servers (usually in a graphical environment).
All browsers interpret pages marked up with HTML when rendering a page; that is, they present the headings, images, hypertext links, and so on to the user.
Some browsers display images, play movies and sounds, and render other types of objects.
Many browsers can run JavaScript that is embedded in HTML pages. JavaScript is used, for example, to validate a
<form>or change how a page is presented based on user actions.Selected web browsers can run components developed in the Java or ActiveX programming languages. These components often provide additional animation, tools that can’t be implemented in HTML, or other, more complex features.
Several browsers can apply Cascading Style Sheets (CSS) to HTML pages to ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.