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[whatwg] Re: pattern attribute

From: Malcolm Rowe <malcolm-what@farside.org.uk>
Date: Thu, 22 Jul 2004 11:28:50 +0100
Message-ID: <courier.40FF96E2.00004E7A@mail.farside.org.uk>
Wrigley, Ave writes:
> 1. What is the motivation behind the implicit ^ and $ (start and end of
> string metacharacters)?

Just on this point, see, for example, 

In summary:
* Whole-pattern matches appears to be significantly more common.
* Forms-design applications that support patterns usually make the pattern a 
whole-pattern rather than substring match.
* In the current design, it's immediately obvious if you get it wrong (i.e., 
you wanted a substring match, and got a whole-pattern match). Without the 
implicit start and end characters, you won't necessarily notice that what 
you expected to be a whole-pattern match is actually acting as a substring 

Received on Thursday, 22 July 2004 03:28:50 UTC

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