JSFiddle - React, Tailwind, and code Playground

by Martin Murciego

HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script><link href="//cdnjs.cloudflare.com/ajax/libs/select2/4.0.0/css/select2.min.css" rel="stylesheet"/>
<script src="//cdnjs.cloudflare.com/ajax/libs/select2/4.0.0/js/select2.min.js"></script>


<button>Add new select</button>
  <div id="dynamic-container">

  </div>

JavaScript

$(function() {
  $("button").on("click", function() {
    $("#dynamic-container").append($("<select><option></option><select/>"));
  });

  // select the target node
  var target = document.getElementById('dynamic-container');

  if (target) {
    // create an observer instance
    var observer = new MutationObserver(function(mutations) {
      //loop through the detected mutations(added controls)
      mutations.forEach(function(mutation) {
      //addedNodes contains all detected new controls
        if (mutation && mutation.addedNodes) {
          mutation.addedNodes.forEach(function(elm) {
          //only apply select2 to select elements
            if (elm && elm.nodeName === "SELECT") {
              $(elm).select2(
              {
              language: "es",
              placeholder: "Seleccione...",
              allowClear: true,
              width: "180px",
              closeOnSelect:true
              });
            }
          });
        }
      });
    }); 
    
    // pass in the target node, as well as the observer options
    observer.observe(target, {
      childList: true
    });

    // later, you can stop observing
    //observer.disconnect();
  }
});