[whatwg] Re: Web Forms 2.0
ian at hixie.ch
Fri Oct 7 12:53:39 PDT 2005
On Fri, 7 Oct 2005, Ryan Cannon wrote:
> <input type="text" required="required" notPattern="First Name\s*"
> value="First Name" />
> I hope it is not too late in this versions timeframe to bring such
> functionality in, as it seems impossible right now.
You can do this today with:
...which would match any field that did not match /First Name\s*/. See
section 18.104.22.168 (page numbered 147) of ECMA-262 3rd edition for more
details on the (?!...) negative look-ahead assertion.
Note however that a better way to do this is:
<label>First Name: <input required></label>
Your original example fails if the person's first name is really "First
Name", and doesn't semantically indicate that the text field is expecting
a first name (it says its default value is "First Name", which is very
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
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