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A comment on JavaScript performance and a Webkit hotspot. Parent comment

Re:JavaScript performance and a Webkit hotspot by rimantas on Monday May 02, 2011 @03:39PM (#2507525) 

  But it is well known (see either "The Good Parts" or "High
  Performance Javascript" that appending strings is quadratic 
  in JavaScript, and that the best way to assemble a large, 
  multipart string is arrayOfStrings.join('');
It's a bit fuzzy now, modern browser optimized that quite a bit, so this mainly applies to older versions of IE.
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