Nicola Di Fabrizio wrote:
is it possible to set a attribute for checking the element
if it is not empty
Yes, there's the attribute required, see
http://www.whatwg.org/specs/web-apps/current-work/multipage/common-input-element-attributes.html#the-required-attribute
like
<input type="text" needed="yes">
Like <input type="text" required>.
No value is needed, it's a "boolean" attribute (somewhat misleading, but
this name is justified by the logic that the _presence_ or absence of the
attribute in markup implies a boolean value - true or false - for the IDL
attribute, a property of the object).
if needed = yes and the element has no value
then appears a msgbox like
"Please input something..."
Something like that, though this has been implemented in a few browsers
only, e.g. Opera.
or the msgbox text is also an attribute
where you can put in your own message.
Well not in markup, but HTML5 specifies the setCustomValidity() method for
input fields; so you can set your own message using JavaScript.
--
Yucca, http://www.cs.tut.fi/~jkorpela/
