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Use xml dom and XPath to create online tests for multiple choice questions
Author:Enrico metrics ar SamuelSource: http://www.codeproject.com/aspnet/xmlquiz.aspIntroduction
The idea of creating online tests comes from an accidental opportunity
XPath Introduction
XPath is a W3C standard. It is designed to locate nodes in the xml1.0 or xml1.1 document node tree. Currently, xpath1.0 and xpath2.0 are available. Xpath1.0 became the W3C standard in 1999, while xpath2.0 standard was established
The furthest distance in the world is probably to see a page element chu there, but I can't locate it!!
There are many ways to locate elements, such as through IDs, name, Class_name, Tag_name, Link_text, and so on, but the limitations of these
First, the method of locating elements
ID: Preferred recognition attribute, the standard recommended for each element of the page set a unique id attribute,
If it is not and it is difficult to find the unique attribute, workaround: (1)
XML is often used in programming.. Net FrameWork provides DLL specially for XML processing, which provides a lot of XML Processing Methods. Here we will briefly introduce how to use XPath.
XPath uses path expressions to select nodes or node sets in
Problem: It is troublesome to use dom4j to query nodes (tags, attributes, and text) with deep hierarchies !!! Problem: It is troublesome to use dom4j to query nodes (tags, attributes, and text) with deep hierarchies !!!
Xpath is generated in this
XPath
• XPath (XML Path Language) is a common query method used to query and locate elements and texts in XML documents.
• Many people regard XPath as an Internet SQL language.
• The XPath syntax uses a pattern called an expression. There is nothing
Http://www.ruanyifeng.com/blog/2009/07/xpath_path_expressions.html
Simply put, XPath is the way to select nodes in an XML file.
The so-called node, is the smallest constituent unit of the XML file, divided into 7 kinds altogether.
-Element
Simply put, XPath is the way to select nodes in an XML file.The so-called node, which is the smallest constituent unit of an XML file, is divided into 7 types.-Element (Elements node)-Attribute (attribute node)-Text (textual node)-Namespace
WebDriver API: how to locate the elements on the Web page, webdriverapi
Through the front-end tool, we can see a webpage. The elements on the page are composed of a line of code, which are organized hierarchically. Each element has a differentTag
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