DHTML allows different scripting languages in a web page to change their variables, which enhance the effects, looks and many others functions after the whole page have been fully loaded or under a view process, or otherwise static HTML pages on the same. But in true ways, there is noting that as dynamic in DHTML, there is only the enclosing of different technologies like CSS, HTML, JS, DOM, and different sets of static languages which make it as dynamic.
DHTML is used to create interactive and animated web pages that are generated in real-time, also known as dynamic web pages so that when such a page is accessed, the code within the page is analyzed on the web server and the resulting HTML is sent to the client’s web browser.
HTML: HTML stands for Hypertext Markup Language and it is a client-side markup language. It is used to build the block of web pages.
CSS: The abbreviation of CSS is Cascading Style Sheet. It helps in the styling of the web pages and helps in designing of the pages. The CSS rules for DHTML will be modified at different levels using JS with event handlers which adds a significant amount of dynamism with very little code.
DOM: It is known as a Document Object Model which act as the weakest links in it. The only defect in it is that most of the browser does not support DOM. It is a way to manipulate the static contents.
Key Features: Following are the some major key features of DHTML:
- Tags and their properties can be changed using DHTML.
- It is used for real-time positioning.
- Dynamic fonts can be generated using DHTML.
- It is also used for data binding.
- It makes a webpage dynamic and be used to create animations, games, applications along with providing new ways of navigating through websites.
- The functionality of a webpage is enhanced due to the usage of low-bandwidth effect by DHTML.
- DHTML also facilitates the use of methods, events, properties, and codes.
Why Use DHTML?
- Size of the files are compact in compared to other interactional media like Flash or Shockwave, and it downloads faster.
- It is supported by big browser manufacturers like Microsoft and Netscape.
- Highly flexible and easy to make changes.
- Viewer requires no extra plug-ins for browsing through the webpage that uses DHTML, they do not need any extra requirements or special software to view it.
- User time is saved by sending less number of requests to the server. As it is possible to modify and replace elements even after a page is loaded, it is not required to create separate pages for changing styles which in turn saves time in building pages and also reduces the number of requests that are sent to the server.
- It has more advanced functionality than a static HTML. it is capable of holding more content on the web page at the same time.
- It is not supported by all the browsers. It is supported only by recent browsers such as Netscape 6, IE 5.5, and Opera 5 like browsers.
- Learning of DHTML requires a lot of pre-requisites languages such as HTML, CSS, JS, etc should be known to the designer before starting with DHTML which is a long and time-consuming in itself.
- Implementation of different browsers are different. So if it worked in one browser, it might not necessarily work the same way in another browser.
- Even after being great with functionality, DHTML requires a few tools and utilities that are some expensive. For example, the DHTML text editor, Dreamweaver. Along with it the improvement cost of transferring from HTML to DHTML makes cost rise much higher.
Difference between HTML and DHTML:
- HTML is a markup language while DHTML is a collection of technologies.
- HTML is used to create static webpages while DHTML is capable of creating dynamic webpages.
- DHTML is used to create animations and dynamic menus but HTML not used.
- HTML sites are slow upon client-side technologies whereas DHTML sites are comparatively faster.
- HTML cannot be used as server side code but DHTML used as server side code.
- DHTML needs database connectivity but not in case of HTML.
- Files in HTML are stored using .htm or .html extension while DHTML uses .dhtm extension.
- HTML requires no processing from the browser but DHTML does.
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