JSFiddle - React, Tailwind, and code Playground

HTML

<div id="input_fields">
    <input class="tags" />
</div>

<div id="clone">+</div>

JavaScript

var availableTags = [
    "ActionScript",
    "AppleScript",
    "Asp",
    "BASIC",
    "C",
    "C++",
    "Clojure",
    "COBOL",
    "ColdFusion",
    "Erlang",
    "Fortran",
    "Groovy",
    "Haskell",
    "Java",
    "JavaScript",
    "Lisp",
    "Perl",
    "PHP",
    "Python",
    "Ruby",
    "Scala",
    "Scheme"
    ];

$(document).ready(function() {

    enable_autocomplete($('.tags'));

    $('#clone').click(function() {
        $('#input_fields input:first').clone().val('').appendTo('#input_fields');
        enable_autocomplete($('#input_fields input:last'));
    });
});

function enable_autocomplete(InputField) {
    $(InputField).autocomplete({
        source: availableTags
    });
}