Dynamic HTML

Dynamic HTML

Dynamic HTML (DHTML) is a collection of technologies used in web development that allow for the creation of dynamic and interactive web pages. It combines HTML, CSS, and JavaScript to create rich user interfaces and dynamic content on web pages.

DHTML enables web developers to modify the content and layout of web pages in real-time based on user input, without the need for server-side processing. This allows for a more responsive user experience as changes to the web page can be made quickly without requiring the user to wait for the page to reload.

Some of the key technologies and techniques used in DHTML include:

DOM (Document Object Model) – The DOM is a programming interface for web documents. It defines the logical structure of documents and the way a document is accessed and manipulated.

CSS (Cascading Style Sheets) – CSS is used to control the presentation and layout of web pages, allowing for the creation of dynamic and responsive layouts.

JavaScript – JavaScript is used to add interactivity and dynamic behavior to web pages. It is used to manipulate the DOM and CSS styles in real-time based on user input.

AJAX (Asynchronous JavaScript and XML) – AJAX is used to create fast and responsive web applications by allowing web pages to update specific parts of the page without requiring a full page refresh. Animations and Effects – DHTML can be used to create animations and visual effects on web pages, such as slide shows, image galleries, and interactive menus.

While not exclusively a Microsoft technology, Dynamic HTML (DHTML) plays an important role in making Web pages responsive, interactive, and more like a regular Windows program. When the browser analyzes the HTML code for a page, it creates an in memory document. This document has a hierarchical structure where child elements nest inside their parent containers. For example, table rows are nested inside tables that are nested within the document’s body.

The word dynamic in DHTML refers to the ability to change the characteristics of an element by using JavaScript. You’ve seen this ability many times without necessarily paying attention. For example, you’re seeing DHTML at work when you hover the mouse over an image, and the image changes. Likewise, DHTML is at work when you click a plus sign to expand a paragraph of text. Chances are, JavaScript is instructing the text (or its container) to become visible — even though the original code sent from the server set the text as hidden. The ability of JavaScript and ASP.NET AJAX to manipulate and rewrite almost any part of a Web page (the text included) is what makes most dynamic effects possible.

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