XSLT is a language for transforming XML documents into XHTML documents or to other XML documents.
XSLT是一种把XML文件转换成XHTML文档或者其他的XML文档的语言。
XPath is a language for navigating in XML documents.
XPath是一种由于操作XML文档的语言。
What You Should Already Know
学前基础
Before you continue you should have a basic understanding of the following:
如果你想继续下面的学习，你必须得掌握下面的一些基本常识。
- HTML / XHTML
- XML / XML 命名空间
- XPath
If you want to study these subjects first, find the tutorials on our Home page.
如果你想要先学习这些课题，那请在知识库找到这些教程.
What is XSLT?
什么是XSLT？
- XSLT stands for XSL Transformations
XSLT代表XSL转换（XSL Transformations） - XSLT is the most important part of XSL
XSLT是XSL最重要的部分 - XSLT transforms an XML document into another XML document
XSLT可以把XML文档转换成另一个XML文档 - XSLT uses XPath to navigate in XML documents
XSLT通过XPath操作XML文档 - XSLT is a W3C Recommendation
XSLT是一种W3C参考标准
XSLT = XSL Transformations
XSLT=XSL转换（XSL Transformations）
XSLT is the most important part of XSL.
XSLT是XSL的最重要的一部分。
XSLT is used to transform an XML document into another XML document, or another type of document that is recognized by a browser, like HTML and XHTML. Normally XSLT does this by transforming each XML element into an (X)HTML element.
XSLT用于把XML文件转换成另一份XML文件，或者转换成另一种被浏览器所识别的诸如HTML和XHTML类型的文件。通常情况下，XSLT是通过把每个XML元素转换成（X）HTML文件来完成的。
With XSLT you can add/remove elements and attributes to or from the output file. You can also rearrange and sort elements, perform tests and make decisions about which elements to hide and display, and a lot more.
通过XSLT，你可以从已输出的文件里添加/移除元素和属性。你也可以把元素重新排列和分类，执行测试语句，决定是隐藏还是显示元素，或者实现其它更多的功能。
A common way to describe the transformation process is to say that XSLT transforms an XML source-tree into an XML result-tree.
对于描述转换过程，可以形象的描述为：XSLT把XML源树转（XML source-tree）换成XML结果树（XML result-tree）。
XSLT Uses XPath
XSLT对于XPath的使用
XSLT uses XPath to find information in an XML document. XPath is used to navigate through elements and attributes in XML documents.
XSLT通过对XPath的使用来找寻XML文档中的信息。XPath用于操作XML文件中的元素和属性。
If you want to study XPath first, please read our XPath Tutorial.
如果你想先学习XPath，请先阅读我们的XPath教程.
How Does it Work?
如何使它运行？
In the transformation process, XSLT uses XPath to define parts of the source document that should match one or more predefined templates. When a match is found, XSLT will transform the matching part of the source document into the result document.
在转换过程中，XSLT通过XPath来定义部分应该和一个或更多预定的模板相匹配的源文件。当一个匹配找到后，XSLT将会把相匹配的部分源文件转换成结果文档。
XSLT is a Web Standard
XSLT是一个网络标准
XSLT became a W3C Recommendation 16. November 1999.
XSLT在1999年11月16日成为W3C参考标准。