Wireless Computer
Wap and the Golden Age of Wireless
A golden age of wireless is coming ... Really! Despite the proliferation of cell phones and PDAs, handheld devices are very few people currently use to access the Internet, much less used as a conduit for access management systems.
wireless landscape today is still in its infancy - the rules are far from being established and competing systems in a battle for mind and market share. And the field Battle is bloody bodies of the heroes of yesterday.
I've been designing websites since 1996. In the beginning it was easy. Someone called me with a project, sent me the content for your website, I would go to Microsoft Frontpage or a text editor, insert some HTML tags to format and some graphics for the site colors, and the work was finished.
The wireless revolution changed everything. Almost every electronic device now comes equipped with Internet access and email. Palm tops, laptops, cell phones, even computer screens installed in cars are now connected to Internet. Web browsers and operating systems installed on these mobile devices are often very different from what is installed on a normal desktop PC.
Many elements of the HTML programming language are not compatible with some of these wireless platforms. As a result, web design has changed completely. languages Cross-platform programming specifications have been created so the sites can be viewed on any PC or wireless device.
Now that you have a basic understanding of how and why it has changed the program, which is now ready for a brief introduction to the main topic of this article, WAP (Wireless Application Protocol). WAP is an international open standard for applications that use wireless communications. Its primary application is to allow access aa Internet from a mobile phone or PDA.
Before discussing wireless application protocol, you must first know a little about a language called XML. Is a language that allows programmers to define data without telling the browser how to display, because the XML files are simple text files. As a result, XML data can be displayed on any web browser. It is significant, because as we have already established, wireless web browsers have trouble with HTML. XML solves this dilemma by putting the data into a format that will be displayed on all platforms.
WAP browsers are browsers that run on wireless devices such as cell phones. The WAP protocol understands WML (Wireless Markup Language), which is written in XML. In addition to XML, WML uses a little Javascript, which is known as WMLScript. However, JavaScript is actually not directly coded in WML, but referred to by a sequence of URLs, which must be compiled into code of bytes on the server before the javascript runs on the mobile browser.
Wireless markup language uses tags, like HTML. However, tags are case-sensitive. The most important tag is the label used the card. WAP pages are known as decks, consisting a set of cards, which contain code tags inserted between the opening and closing of each card. The letters within the document are then connected.
When a mobile Web browser is prepared to present the contents of a web page for the user, download all the cards in the deck to the top when loading the first page and then is able to display the website and all content without any additional visits to the server.
Within the code, there are usually two main types task called going and earlier. The task of going label causes a change to a new card in the deck. The label makes the previous task action to change the card that was accessed previously. The other two types of work worthy of mention are the update task, which will refresh the variables that are used and update the screen if the variables appear on the screen, and noop task, for any operation carried out more.
There are many other ingenious tasks and elements used in WML, as timer element. An example of the timer element in the action would be to cause a message that is generated by a task in one of the cards to appear on the screen for 3 seconds before disappearing and moving on to the next card in the deck.
If you make a living as a web designer, you need to learn to create WML pages that are enabled for WAP browsers. If you can not program a web site that can be displayed on a wireless computer, then your clients will be very unhappy. Internet use Wireless is proliferating. Not the creation of websites that can be displayed effectively on all platforms is equivalent to professional suicide.
If you not familiar with the wireless markup language, I recommend that you enroll in some courses in an institute of local computer programming, or buy some online tutorials. The syntax of the WML language is not too complicated, so if you already have extensive experience in web design, language learning should be relatively easy.
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