querySelectorAll vs getElementsByTagName · jsPerf

JavaScript performance comparison Test case created by Andrew Hedges on 2010-9-22 Preparation code <div> <ul> <li><a href="#">item 1</a></li> <li><a href="#">item 2</a></li> <li><a href="#">item 3</a></li> </ul> </div> Preparation code output <div> <ul> <li><a href="#">item 1</a></li> <li><a href="#">item 2</a></li> <li><a href="#">item 3</a></li> </ul> </div> Test runner Warning! For accurate res

[n2s]

なぜかOperaだけ逆転。