В subject-строка news
this.Html = function (cc,subject, controller, id, user_id,number=0) {
....
var a ='<a class="btn btn-info other_list" href="javascript:;" onclick="otherList(...'+subject+'...)">Ещё '+cc+'</a>';
$('#ajax_html').append(a);
}
this.otherList = function(...'+subject+'...){
}
//Uncaught ReferenceError: news is not defined