jquery - Can I get 'this' element from rxjs observable when source is a class -

i doing fromevent on click observable, however, want data attribute element gave event. i'been trying use within no success. how can achieve normal 'this' jquery

var elem = $(".someelementclass"); var source = rx.observable.fromevent(elem, 'click'); var subscription = source.subscribe(function (e) { var x = $(this).attr("data-toget"); alert(x); }); 

this inside callback not refer jquery object, example in $.each., in case can use $(e.currenttarget) instead of $(this)

var elem = $(".someelementclass");  var source = rx.observable.fromevent(elem, 'click');  var subscription = source.subscribe(function (e) {    console.log($(e.currenttarget).attr("data-toget"));  });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>  <script src="https://npmcdn.com/@reactivex/rxjs@5.0.0-beta.7/dist/global/rx.umd.js"></script>  <button class="someelementclass" data-toget="100">button-1</button>  <button class="someelementclass" data-toget="200">button-2</button>  <button class="someelementclass" data-toget="300">button-3</button>