NodeIterator vs Xpath for DOM iterating/finding in Javascript

Which is better to use when iterating over D开发者_如何学COM elements or finding a a set of DOM elements. is Xpath faster?

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If you want to find a group of elements that are at different hiearchical levels and different attributes of interest then you should use Xpath.

If you just want to "iterate" one by one over a set of elements then just use the iterator.

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Xpath is more clean.

EDIT: Sorry, I don't know if it is faster.

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The dojo team did some research about when XPath is faster for their dojo.query interface.

See their Blog Post about it.

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according to this post "The DOM traversal code is about four times faster than the XPath code." http://www.sklar.com/blog/archives/85-Speed-DOM-traversal-vs.-XPath-in-PHP-5.html