Comments on: Use Array.join instead of concatenating strings?!? http://friedcellcollective.net/outbreak/2007/09/06/use-arrayjoin-instead-of-concatenating-strings/ bursts of ideas and rants by the alterego Tue, 31 Jan 2012 17:40:38 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Five quick Javascript tips - blog.andyhume.net http://friedcellcollective.net/outbreak/2007/09/06/use-arrayjoin-instead-of-concatenating-strings/comment-page-1/#comment-127886 Five quick Javascript tips - blog.andyhume.net Tue, 26 Jan 2010 23:50:47 +0000 http://friedcellcollective.net/outbreak/2007/09/06/use-arrayjoin-instead-of-concatenating-strings/#comment-127886 [...] Update: A number of people have mentioned to me that the Array.join technique for string concatenation is a bad one, particularly if you're only doing it with a small number of strings. Our benchmarks show it being faster for IE when you get to about 6/7 string concatenations, so it's been useful to us in some situations. But I'd agree with Stuart below that for the average situation it's not going to be worth it. However, I don't see using Array.join() for string concatenation as an abuse of JavaScript. [...] [...] Update: A number of people have mentioned to me that the Array.join technique for string concatenation is a bad one, particularly if you’re only doing it with a small number of strings. Our benchmarks show it being faster for IE when you get to about 6/7 string concatenations, so it’s been useful to us in some situations. But I’d agree with Stuart below that for the average situation it’s not going to be worth it. However, I don’t see using Array.join() for string concatenation as an abuse of JavaScript. [...]

]]> By: Marko Mrdjenovic http://friedcellcollective.net/outbreak/2007/09/06/use-arrayjoin-instead-of-concatenating-strings/comment-page-1/#comment-59936 Marko Mrdjenovic Wed, 30 Jan 2008 13:44:34 +0000 http://friedcellcollective.net/outbreak/2007/09/06/use-arrayjoin-instead-of-concatenating-strings/#comment-59936 I think we can all agree that Array.join makes sense on a huge number of elements (more than 20) and only in IE. I think we can all agree that Array.join makes sense on a huge number of elements (more than 20) and only in IE.

]]> By: Bob Dobbs http://friedcellcollective.net/outbreak/2007/09/06/use-arrayjoin-instead-of-concatenating-strings/comment-page-1/#comment-59604 Bob Dobbs Mon, 28 Jan 2008 21:05:23 +0000 http://friedcellcollective.net/outbreak/2007/09/06/use-arrayjoin-instead-of-concatenating-strings/#comment-59604 Using Array.join vs. the += operator made a huge difference in IE6. Your tests are also on a fairly small number of elements, The idea of array.join was that it might make sense on very large datasets. Using Array.join vs. the += operator made a huge difference in IE6. Your tests are also on a fairly small number of elements, The idea of array.join was that it might make sense on very large datasets.

]]> By: Eway Solutions » Blog Archive » Five quick JavaScript tips http://friedcellcollective.net/outbreak/2007/09/06/use-arrayjoin-instead-of-concatenating-strings/comment-page-1/#comment-41338 Eway Solutions » Blog Archive » Five quick JavaScript tips Thu, 18 Oct 2007 12:12:56 +0000 http://friedcellcollective.net/outbreak/2007/09/06/use-arrayjoin-instead-of-concatenating-strings/#comment-41338 [...] A number of people have mentioned to me that the Array.join technique for string concatenation is a bad one, particularly if you’re only doing it with a small number of strings. Our benchmarks show it being faster for IE when you get to about 6/7 string concatenations, so it’s been useful to us in some situations. But I’d agree with Stuart below that for the average situation it’s not going to be worth it. However, I don’t see using Array.join() for string concatenation as an abuse of JavaScript. [...] [...] A number of people have mentioned to me that the Array.join technique for string concatenation is a bad one, particularly if you’re only doing it with a small number of strings. Our benchmarks show it being faster for IE when you get to about 6/7 string concatenations, so it’s been useful to us in some situations. But I’d agree with Stuart below that for the average situation it’s not going to be worth it. However, I don’t see using Array.join() for string concatenation as an abuse of JavaScript. [...]

]]> By: Chris http://friedcellcollective.net/outbreak/2007/09/06/use-arrayjoin-instead-of-concatenating-strings/comment-page-1/#comment-37109 Chris Tue, 11 Sep 2007 18:44:09 +0000 http://friedcellcollective.net/outbreak/2007/09/06/use-arrayjoin-instead-of-concatenating-strings/#comment-37109 Concatenating three long strings through array.join() was definitely the fastest for me. It was the only test (of the four) that had times of less than 1000 ms. Some were even down to 400 ms. On the other hand the slowest was 12 shorter strings using array.join(). Regular concatenation was about the same in both cases. FF2 on Windows XP with P4 3.2 GHz (the hyper-threading kind). YMMV. Concatenating three long strings through array.join() was definitely the fastest for me. It was the only test (of the four) that had times of less than 1000 ms. Some were even down to 400 ms. On the other hand the slowest was 12 shorter strings using array.join().

Regular concatenation was about the same in both cases.

FF2 on Windows XP with P4 3.2 GHz (the hyper-threading kind).

YMMV.

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