JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://harvesthq.github.com/chosen/chosen/chosen.jquery.js"></script>
<link rel="stylesheet" href="http://harvesthq.github.com/chosen/chosen/chosen.css">
<div>
<select id="testChosen" data-placeholder="Choose a Country" class="chzn-select" multiple style="width:350px;" tabindex="4">
                <option value=""></option> 
                <option value="United States">United States</option> 
                <option value="United Kingdom">United Kingdom</option> 
                <option value="Afghanistan">Afghanistan</option> 
                <option value="Albania">Albania</option> 
                <option value="Algeria">Algeria</option> 
                <option value="American Samoa">American Samoa</option> 
                <option value="Andorra">Andorra</option> 
                <option value="Angola">Angola</option> 
                <option value="Anguilla">Anguilla</option> 
                <option value="Antarctica">Antarctica</option> 
                <option value="Antigua and Barbuda">Antigua and Barbuda</option> 
                <option value="Argentina">Argentina</option> 
                <option value="Armenia">Armenia</option> 
                <option value="Aruba">Aruba</option> 
                <option value="Australia">Australia</option> 
                <option value="Austria">Austria</option> 
                <option value="Azerbaijan">Azerbaijan</option> 
                <option value="Bahamas">Bahamas</option> 
                <option value="Bahrain">Bahrain</option> 
                <option value="Bangladesh">Bangladesh</option> 
                <option value="Barbados">Barbados</option> 
                <option value="Belarus">Belarus</option> 
                <option value="Belgium">Belgium</option> 
                <option value="Belize">Belize</option> 
                <option value="Benin">Benin</option> 
                <option value="Bermuda">Bermuda</option> 
                <option value="Bhutan">Bhutan</option> 
  ...

JavaScript

$(".chzn-select").chosen();
$(".chzn-select-deselect").chosen({allow_single_deselect:true});

$("#btn").click(function(){
    alert('Called');
    var testChosen=$("#testChosen");
    $(testChosen).find('option').each(function(item)                    {
    $(this).attr('selected','selected');
            });
    $(testChosen).trigger("liszt:updated");
    
}
);