On 31 Dec 2009, at 11:20, Kirk Cerny wrote:

> No, its a boolean, the fact that the attribute is there means  
> required.
> Its like selected="selected", or checked="checked"
>
> required="true" === required="false" === required="required"
> selected="true" === selected="false" === selected="selected"

Ah; thanks.

I have always written checked="checked" instead of just checked. Seems  
improper to have an attribute without a value.


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