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Message: [QUOTE="John G Harris, post: 4972164"] On Fri, 23 May 2008 at 23:02:56, in comp.lang.javascript, dhtml wrote: <snip> I've not seen a detailed explanation of this rule but I gather the idea is that each function should have just one exit point. This makes it easier to check every code path and to confirm that all code paths have been tested (I think). However, a lot of experts agree that a few if (nothing to do) return; at the beginning of the function is harmless. It's having exits buried deep inside a tangle of if's and while's that's a problem. The usual rule : messy code is bad. John [/QUOTE]