What is WAP?
I designed the site since 1996. First, it is easy. Someone told me a project, they sent their site, I then uploaded to the front page of the Microsoft or text editor, insert some HTML formatting tags and some colorful charts to make my site, and work is completed.
Wireless revolution changed everything. Now almost every electronic device on the network and e-mail with a pass into the equipment. Crown on palm, laptop computers, mobile phones, even in the car to install the computer screen is now connected to the Internet. Radio equipment installed in the web browser and operating system with what are often very different from a regular desktop computer is installed. HTML programming language, many of the elements are not compatible with some wireless platforms. Result, network design completely changed. Cross-platform programming language and specifications were created for sites in all personal computers and wireless gadgets can be viewed.
Now that you have a basic understanding of how the pair, and why the change in programming, you are now ready to briefly introduce the main topic of this article, WAP (wireless application protocol). WAP is a wireless communication application using open international standards. Its main application is to enable the Internet access from mobile phone or PDA.
Before we start talking about the wireless application protocol, you should first know a little about the language known as XML. It is to tell the programmer-defined data, not the browser how to display it in the language, because XML files are simple text files. Result, XML data can be displayed on all browsers. This is significant, because we have established a wireless network with the HTML browser has the difficult period. XML data to resolve this dilemma by putting all the platforms are displayed in the format.
WAP browser is running in the radio equipment such as mobile phone browser. WAP Agreement for more WML (Wireless Markup Language) is written in XML. In addition to XML outside, WML use of a Java language, refers to the WMLScript. However, Java language is not actually encoded directly into the WML pages; through the use of the script URL, it references must be written into the byte code on the server, the Java language can run before the wireless browser.
Wireless Markup Language to use tags, like HTML. However, the tag is case sensitive. The most important marker used is a card marker. WAP page called the deck, and they include a set of cards, including the code on each card in the middle between the values of the beginning and closing tag. Card within this article and connect with each other. When a wireless Web browser for the content presented to the user, it downloads all the cards in the deck first, when the page first loads, and can display web pages and everything in it does not make any additional visits to the server.
Within the code, usually called two main types of tasks to and earlier. To the task of marking on the deck lead to a switch within a new card. Replace the previous action caused the task before the visit marked the cards. Also noteworthy are two types of tasks is to refresh the task, will refresh all the variables used and refresh the screen, if the variables appear on the screen and noop task, from the execution to stop any further action. There used to WML such as timers and many other wonderful elements of the tasks and elements. Examples of the timer element is the lead in action on the screen by a task in which one caused the card disappear and appear for 3 seconds to move down in the cards in the deck before the news.
If you make a living as a web designer, you need to learn to create for the WAP browser allows the page to the WML. If you cannot program web site so that it is a wireless computer can be displayed, then your customers will be very happy. Proliferation of wireless Internet usage. Does not create all the platforms can effectively be displayed on the same site is the cause of suicide. If you are not familiar with the Wireless Markup Language, I suggest you line up in some computer programming at a local college, or online purchase of some explanation. WML language syntax is not too complicated, so if you already have extensive experience in web design, learn the language should be relatively easy.
Jim Pretin is http://www.forms4free.com owner, to help programmers do e-mail service.
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