Because the length attribute of arrays is dynamic, and is evaluated each time you use it. That's a perfomance optimization. Also.. if you add items to the array inside the 'for', you'll go into an infinite loop.
-- Ariel Flesler http://flesler.blogspot.com On 11 jul, 08:06, Javier MartÃnez <[EMAIL PROTECTED]> wrote: > This is a question about the jquery code. I see many times this type of > statement *for (var i = 0, j = array.length; i < j; i++)* and want to > know why is better than* for (var i = 0; j < array.length; i++) > > *Because the first statement has more characters and jquery code tends > to see shorter, I think that there is some reason to do it this way. > Maybe the second part of the for loop (the comparation) is done on every > iteration? > > Thanks.
