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WAP 基础知识


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WAP Homepages
WAP主页

WAP homepages are not very different from HTML homepages. The markup language used for WAP is WML (Wireless Markup Language). WML uses tags - just like HTML - but the syntax is stricter and conforms to the XML 1.0 standard.
WAP主页与HTML主页并没有太大不同。WAP用的标记语言是WML(无线标记语言)WML使用标签——就像HTML一样-——但WAP的语法更严格并且遵守XML 1.0标准

WML pages have the extension *.WML, just like HTML pages have the extension *.HTML.
WML页面有扩展名*.WML,就像HTML页面用扩展名*.HTML.


WML Tags
WML标签

WML is mostly about text. Tags that would slow down the communication with handheld devices are not a part of the WML standard. The use of tables and images is strongly restricted. 
WML大部分是有关文本的 。会减缓与掌上部件通信的标签不是WML标准的一部分。表格和图像的使用是非常受到限制的。

Since WML is an XML application, all tags are case sensitive (<wml> is not the same as <WML>), and all tags must be properly closed.
因为WML是XML应用程序,所有的标签都是区分大小写的(<wml> 和 <WML>是不一样的),而且所有的标签必须合理地结尾


WML Decks and Cards

WML pages are called DECKS. They are constructed as a set of CARDS, related to each other with links. When a WML page is accessed from a mobile phone, all the cards in the page are downloaded from the WAP server. Navigation between the cards is done by the phone computer - inside the phone - without any extra access trips to the server.
WML页面被称为DECKS(一幅card)。它们由CARDS(一组card)构成,互相以链接相连。当在手机上访问一个WML页面时,页面所有的card都已从WAP服务器上下载下来了。在card与card之间的转换是由手机内置的手机计算机完成的,这无须访问服务器。


Example WML document:
WML文档例子:

<?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"
"http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card id="HTML" title="HTML Tutorial">
<p>
Our HTML Tutorial is an award winning
tutorial from W3Schools.
</p>
</card>
<card id="XML" title="XML Tutorial">
<p>
Our XML Tutorial is an award winning
tutorial from W3Schools.
</p>
</card>
</wml>

As you can see from the example, the WML document is an XML document. The DOCTYPE is defined to be wml, and the DTD is accessed at www.wapforum.org/DTD/wml_1.1.xml.
就如上述例子中所见,WML文档是一份XML文档。文档类型会定义为wml,DTD可以在这找到:www.wapforum.org/DTD/wml_1.1.xml.

The document content is inside the <wml>...</wml> tags. Each card in the document is inside <card>...</card> tags, and actual paragraphs are inside <p>...</p> tags. Each card element has an id and a title.
文档内容包含在<wml>...</wml>标签里。文档中的每张“card”都在<card>...</card>标签里,当前的段落都在<p>...</p>标签里。每张card元素都有一个ID和一个标题

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