JavaScript DOM query

http://kangax.github.io/es5-compat-table/
http://www.quirksmode.org/dom/w3c_core.html
http://www.javascriptkit.com/dhtmltutors/css_selectors_api.shtml
https://developer.mozilla.org/en-US/docs/Web/API/Element.querySelectorAll
http://www.javascriptkit.com/domref/elementmethods.shtml
http://www.javascriptkit.com/domref/documentmethods.shtml
https://developer.mozilla.org/en-US/docs/DOM/DOM_Reference?redirectlocale=en-US&redirectslug=Gecko_DOM_Reference
https://developer.mozilla.org/en-US/docs/DOM/DOM_Reference

!!!!!!!!!!!!!!
http://www.quirksmode.org/dom/w3c_core.html

http://www.quirksmode.org/compatibility.html

+++++++++++++
https://speakerdeck.com/lijing00333/css-selector-performance

http://ejohn.org/files/selectors.html

http://jsperf.com/jquery-context-find-class

http://jsperf.com/jquery-performance-bn/3

http://ejohn.org/apps/selectortest/#target

https://jquery.org/members/

http://smacss.com/book/selectors

http://www.stevesouders.com/blog/2009/03/10/performance-impact-of-css-selectors/

https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Writing_efficient_CSS

https://speakerdeck.com/lijing00333/css-selector-performance

https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Writing_efficient_CSS

http://ejohn.org/apps/selectortest/#target

http://jsperf.com/jquery-performance-bn/3
+++
http://jsperf.com/jquery-context-find-class

http://www.stubbornella.org/content/2009/03/27/reflows-repaints-css-performance-making-your-javascript-slow/

+++++++++++
http://dev.opera.com/articles/view/efficient-javascript/?page=3

++++++
http://www.nczonline.net/blog/2009/02/03/speed-up-your-javascript-part-4/

https://developers.google.com/speed/articles/reflow