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When a web page is loaded, the browser creates a Document Object Model of the page, which is an object oriented representation of an HTML document that acts as an interface between JavaScript and the document itself. This allows the creation of dynamic web pages, [13] because within a page JavaScript can:
A web page script is able to contact the server for storing/retrieving data without downloading an entire web page. The practice became known as Ajax in 2005. 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.
Other applications embedding ECMAScript implementations include the Adobe products Adobe Flash (ActionScript) and Adobe Acrobat (for scripting PDF files). Tcl was created as an extension language but has come to be used more frequently as a general-purpose language in roles similar to Python , Perl , and Ruby .
In 2008, together with Spolsky, Atwood founded Stack Overflow, a programming question-and-answer website. [9] The site was followed by Server Fault for system administrators and Super User for general computer-related questions, eventually becoming the Stack Exchange network which includes many Q&A websites about topics decided on by the community.
It is a logic programming language, based on formal logic. The language was developed by Alain Colmerauer and Philippe Roussel in Marseille, France. It is an implementation of Selective Linear Definite clause resolution, pioneered by Robert Kowalski and others at the University of Edinburgh. [89] The building blocks of a Prolog program are ...
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Logic programming is a programming, database and knowledge representation paradigm based on formal logic. A logic program is a set of sentences in logical form, representing knowledge about some problem domain. Computation is performed by applying logical reasoning to that knowledge, to solve problems in the domain.
In computer science, control flow (or flow of control) is the order in which individual statements, instructions or function calls of an imperative program are executed or evaluated.