XML·XML from well-formed documents to XSLT

XPath

Navigate the XML tree with paths, predicates and functions.

Beginner 13 min read Lesson 5 of 300 Challenge included

What you will be able to do

Use / for children and // for descendants.
Use @ for attributes.
Use predicates to filter.
Use text() and functions such as count().

In plain English

XPath addresses nodes with paths such as /course/lessons/lesson. Predicates filter with [@minutes > 10], and axes such as ancestor and following-sibling move through the tree. XPath 1.0 and 2.0 differ; know which your tool supports.

xpath.txtHTML

/course/lessons/lesson[@minutes > 10]
//lesson[last()]
count(//lesson)

Your turn

Select a child

Easy

Write an XPath that selects title elements under course.

HTML · starter

/course

Check your understanding before moving on.

Knowledge checkQuestion 1

What does // select?

Select an answer to continue

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Lesson 5 of 300 · 0% of course