I have no knowledge of jv, but I have seen that it is with this language that you can use scripts and delete social networking items like by exp on twitter:
setInterval(function(){t=$(".following").find(".follow-button");if(!t[0]){window.scrollTo(0,$(document).height());}else{ console.log(t.attr("class")); t.trigger("click");}},10)
I would like to know / help with a script to delete the likes and comments made on facebook by this page: fb.com/user-here/allactivity