JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li>
        <button type="button">
            <div class="_menu_title">Map</div>
        </button>
        <ul class="dropdown_menu_sub">
            <li class="dropdown_menu_sub_list">
                <img src="http://www.ajaxload.info/cache/FF/FF/FF/00/00/00/1-0.gif" />
                <div class="google_map"></div>
            </li>
        </ul>
    </li>
</ul>

CSS

.dropdown_menu_sub {
    display: none;
}

JavaScript

$('button').on('click', function () {

    $('.dropdown_menu_sub').slideToggle();
    $.get("/echo/html/", function (data) {
        $(".google_map").html(data);
        $('.dropdown_menu_sub_list > img').hide();
    });
});