Elements DTD -Elements ❮ PreviousNext ❯ In a DTD, elements are declared with an ELEMENT declaration. Declaring Elements In a DTD, XML elements are declared with the following syntax: <!ELEMENTelement-name category> or <!ELEMENTelement-name (element-content)>...
In a DTD, elements are declared with an ELEMENT declaration. Declaring Elements In a DTD, XML elements are declared with an element declaration with the following syntax: <!ELEMENT element-name category>or<!ELEMENT element-name (element-content)> Empty Elements Empty elements are declared with th...
2. 元素类型声明LDTD 中使用的元素内容类型有:EMPTY、ANY、Mixed、ElementsEMPTY是指元素不能有任何的内容,但可以有属性:!-这里若是以 的形式岀现,即使里面没有任何数据,也会产生错误-ANY说明元素可以有任何类型的子元素,也可以是纯文本,还可以为空这里需要特别注意的是,虽然用ANY定义的元素可以包含其它元素,但...
详情:http://www.w3school.com.cn/dtd/dtd_elements.asp PCDATA和CDATA的区别是:前者可能需要解析里面标签,后者不解析直接当作字符文本了。 Schema (概要/结构/模式/架构) 基于XML 的 DTD 替代者。 描述XML 文档的结构。 XML Schema 语言也称作 XML Schema 定义(XML Schema Definition,XSD) 定义可出现在文档中...
XML DTD The purpose of a DTD is to define the structure and the legal elements and attributes of an XML document: Note.dtd: <!DOCTYPE note [ <!ELEMENT note (to,from,heading,body)> <!ELEMENT to (#PCDATA)> <!ELEMENT from (#PCDATA)> ...
xml version=""1.0""?> <!DOCTYPE root [ <!ELEMENT root (child)> <!ELEMENT child (#PCDATA)> ]> <root> <child>Hello, World!</child> </root>";XDocumentxdoc=XDocument.Parse(xml);XElementroot=xdoc.Root;foreach(XElementchildinroot.Elements()){Console.WriteLine(child.Value);}}}...
1,Elements(元素) Elements are the main building blocks of both XML and HTML documents. 元素是主要的XML和HTML文档的构造块 在HTML中常见的有"body","table";而在XML中,元素可能是“note”,“message”。 元素可以包含文本,其他元素或者为空。例如空的HTML元素有hr,br和img; ...
1,XML文档的构造块 Seen from a DTD point of view, all XML documents (and HTML documents) are made up by the following simple building blocks: 从一个DTD的视角出发,所有的XML文档(包括HTML文档)是以下几种简单的构造块构成的: Elements Attributes Entities ...
1.2元素(Elements) 元素是XML和HTML文件的主组件群(main building blocks)。HTML元素的实例是"body" 和"table"。XML元素实例是"note" 和"message"。元素可以包括文本、其它元素或者空值。空值html元素的实例是"hr", "br" 和"img"。 例如: body text in between <message>some message...
In the XML file, select "view source" to view the DTD.The DTD above is interpreted like this:!DOCTYPE note defines that the root element of this document is note !ELEMENT note defines that the note element must contain four elements: "to,from,heading,body" !ELEMENT to defines the to el...