XML DOMLesson 33Free preview

DOM Accessing

This lesson is part of XML · All levels

Summary

DOM provides many ways to access nodes: getElementById for a specific id, getElementsByTagName and getElementsByClassName for a set of elements, as well as querySelector for CSS selection. Attributes are read with getAttribute and written with setAttribute. Choosing the right method makes the code more concise and efficient.

Key points

GetElementById takes one element based on the id attribute
GetElementsByTagName returns a set of named elements
QuerySelector accepts CSS selections such as 'product > price'
GetAttribute reads the attribute value of an element
CSS selection is more flexible than manual search

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