[whatwg] finding a number...

Mikko Rantalainen mikko.rantalainen at peda.net
Wed Dec 13 06:13:10 PST 2006

Charles McCathieNevile wrote:
> On Wed, 13 Dec 2006 13:17:14 +0530, Henri Sivonen <hsivonen at iki.fi> wrote:
>> On Dec 13, 2006, at 08:32, Charles McCathieNevile wrote:
>>> possible *and no simpler* - this is too simple. Maybe assuming you can  
>>> parse numbers out of text is just a dumb idea as a normative part of a  
>>> spec.
>> The attributes always work for any language. For English, the  
>> textContent works as a *bonus*. It isn't that the spec fails to work for  
>> non-English. It is just that a particular *redundant* bonus feature  
>> doesn't work for non-English.
> The problem with this is that it means copying code the natural way  
> doesn't work for some non-english speakers, and they have to read the spec  
> or guess why. [...]

I think that "they have to read the spec" is a bonus, too.

Perhaps the parser could be specified as follows:

regexp for "numeric value" is [0-9 ,.]
scan the numeric value backwards from end
first character matching regexp [,.] is the decimal separator

This would correctly interpret numbers such as

23 236 435 123,121

It would fail for numbers such as


but that such formats used in any locale?


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