JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://daneden.github.io/animate.css/animate.min.css">
<select id="idResultEntryMeet" class="form-control input-md" size=1></select>

JavaScript

$('#idResultEntryMeet').on('mousedown', function(e){
    if(!e.view) return;
    e.preventDefault();    
    var _self = this;
    $.post("/echo/html", function (data) {
        $(_self).html('<option>test</option><option>test2</option><option>test3</option>');
         var clk = document.createEvent("MouseEvents");
        clk.initMouseEvent("mousedown", false, false, null, 0, 0, 0, 0, 0, true, false, false, true, 0, null);
        _self.dispatchEvent(clk);
    });
});