Another trick is to do the loop backwards: for(var i = arr.length - 1; i >= 0; i--){...} I remember seeing a test that noted a visible difference between the t

Another trick is to do the loop backwards: for(var i = arr.length - 1; i >= 0; i--){...} I remember seeing a test that noted a visible difference between the two. Its arguable, however, if it makes a significant difference in the grand scheme of things...