Hi Léa,
Is it a conscious choice not to make a gadget of this or just didn't think of it? No messing with javascript. Makes it much easier for user to try it.Hello all,
In the past few months, the development team has mentored a student, Olga, to help us developing a user script that displays the constraints on the item pages.
To use the script, add the following line to your user/common.js:
mw.loader.load( '//www.wikidata.org/w/index.php?title=User:Jonas_Kress_(WMDE)/check_constraints.js&action=raw&ctype=text/javascript' );