Web applications rely on the user’s computer and only requires a web browser. Unlike traditional client-server applications, no additional installation of software on the users’ computers is necessary, apart from browser plug-ins such as Flash.
As a result, web applications achieve a high degree of platform independence, provided that care was taken in ensuring that all browsers are supported. The logic of a web application must be changed, changes in only one central location, namely on the web server are necessary, which has a favorable effect on maintenance costs.
This results in special security advantages: security gaps can be addressed immediately, also no other programs on the user’s system are under full compromise of the vulnerable web application.
To use a web application, one needs a connection to a web server. The data rate of the connection must also be designed to meet the requirements of the application. This fact excludes web applications from a number of scenarios, such as mobile offline use. The applications identify registered users by session ID. This results in security problems.
The slight difference in presentation between different browsers is mostly irrelevant. Devastating are differences in the JavaScript interpretation, which is why browser switches must often used in some cases for different browser versions.
In addition, through the request cycle shown above, only one asynchronous processing is possible, which (eg video editing) excludes a number of application areas.
Web pages
Web pages usually consist of structured text and may also include images and other multimedia elements. The essential feature of websites is that it references hyperlinks to other web sites and together form the hypertext.
Each web page has at least one address (URL), through which it can be accessed in a web browser. Web pages can have static (fixed) or dynamic content. Dynamic content is generated anew each time, preferably based on the result of a database query thanks to Web Design & Development.
Moreover, the same content can be presented in different ways, such as printed version or text version. Web pages are usually downloaded from the Internet or an intranet, but can also be stored on a local storage medium, for example, a hard disk, stored.
Web pages are perceived differently than printed pages of text. Eye-tracking experiments in which the eye movement of the reader is followed, showed that most visitors to a website skim the text (scan), with the eyes first scanning the top of the left edge of its content area.
The result is a Z or F- shaped area that is overlooked by most visitors. The creation and design of websites is summarized under the term web design.