qwertybnm

<form>
  <button type="submit">Go</button>
  <button class="add">Добавить</button>
</form>

<ul class="list"></ul>

let index = 0;
let list = $(".list");

$("form").bind("submit", event => { // bind!!!
  event.preventDefault();

  list.find("li").each(item => {
    alert(item);
  });
});

$(".add").on("click", event => {
	event.preventDefault();

	const li = document.createElement("li");
  li.textContent = index++;
  
  list.append(li);
})

$(document).on('submit', RequestForm,
      function()
      {
        $(document).find(ServicesItem).each(
          function()
          {
            alert();
          }
        );
      }
    );