Layout Engine Internals Video « DougT's Blog - 0 views
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Éric D. on 02 Dec 08- use #id, .class or tagname at right of CSS selectors (in this order)\n- be precise when you use :hover (even if not at the right of the selector)\n- in javascript, a loop for read then a loop for write may be quicker than a loop with read/write because we can avoid the engine to rebuild the layout for each iteration
