JSFiddle - React, Tailwind, and code Playground

HTML

<select id="dropdownBox">

</select>

JavaScript

var items = [1, 2, 3, 4, 6, 7, 8, 9];
var promises = items.map((e) => {
  return $.ajax({
    type: 'post',
    url: "/echo/json/",
    dataType: "json",
    data: { json: JSON.stringify({ id: e}) }
  }).then((data) => {
    var html = ''
    if (data.id > 3) {
      html += "<option value='" + data.id + "'>" + e + "</option>";     
    }
    return html;
  });
});

Promise.all(promises).then((res) => {
   $("#dropdownBox").html(res.join(''));
});