1.XML document affirms
<?xml version="1.0" encoding="utf-8" standalone="no" ?>
To <? Beginning xml, to?> End
Three attributes: version = "1.0" version of the Required property is always 1.0
reads the encoding format encoding = "urf-8" text, optional attributes
standalone = "no" independent of whether the text, the default is yes, optional attributes
2.XML element
Element Structure
Common elements from the body element start tag + + end tag: <a> a.jpg </a>
Empty elements: <br/>
label
Name tags: letters, numbers, minus composition, can not start with a number
Attributes
An element with attributes 0 ~ n th
Structural properties as follows: attribute name = "attribute value"
Element body
Body elements can be text, it can also be a sub-elements
Note: Do not process elements nested disorders such as:
<b><a></b></a>
3. The need to escape special characters
& &
< <
> >
＂ "
＇ '
4.CDATA grammar
Is <![CDATA[]]>this marker will be expressed containing plain text, such as <![CDATA[<]]>showing the text“<”
The processing instruction
How to tell the parser parse xml file
<?xml-stylesheettype="text/css" href="css"?>