In 1999, the "web application" concept was introduced in the Java language in the Servlet Specification version 2.2. So instead of sending data to the server in order to generate an entire web page, the embedded scripts of the downloaded page can perform various tasks such as input validation or showing/hiding parts of the page. In 1995, Netscape introduced a client-side scripting language called JavaScript, allowing programmers to add some dynamic elements to the user interface that ran on the client side. In addition, both the client and server components of the application were usually tightly bound to a particular computer architecture and operating system and porting them to others was often prohibitively expensive for all but the largest applications (Nowadays, native apps for mobile devices are also hobbled by some or all of the foregoing issues). An upgrade to the server-side code of the application would typically also require an upgrade to the client-side code installed on each user workstation, adding to the support cost and decreasing productivity. In other words, an application had its own pre-compiled client program which served as its user interface and had to be separately installed on each user's personal computer. In earlier computing models like client-server, the processing load for the application was shared between code on the server and code installed on each client locally. Web applications are delivered on the World Wide Web to users with an active network connection. Screenshot from 2007 of Horde, a groupware and open-source web applicationĪ web application (or web app) is application software that is accessed using a web browser. ( Learn how and when to remove this template message) This article may need to be rewritten to comply with Wikipedia's quality standards.
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