- From: Jukka K. Korpela <jkorpela@cs.tut.fi>
- Date: Wed, 13 Apr 2011 10:56:18 +0300
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/
Received on Wednesday, 13 April 2011 00:56:18 UTC