This implies a button with id="testsub" exists to actually test running this code. It uses the ZD Help Center session to create a dummy request when the button is clicked.

create_request.js

$(document).ready(function() {

  $('#testsub').click(function(){
    $.ajax('/api/v2/users/me.json').then(function(udata){
      var csrf_auth = udata.user.authenticity_token;
      console.log(csrf_auth);
      $.ajax({
        url: "/api/v2/requests.json",
        contentType: "application/json",
        type: "POST",
        data: JSON.stringify({
          "request":{
            "comment":{
              "body":"comment body!"
            }
          }
        }),
        headers: {
          "X-CSRF-Token": csrf_auth
        }
      }).done(function(data){console.log(data)});
    });    
  });
  
});