JSFiddle - React, Tailwind, and code Playground

HTML

<label for="tags">Tags: </label>
    <input id="tags" />

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"
    ];

var tags = $("#tags").autocomplete({
    source: availableTags
});

availableTags.push("foo");

tags.autocomplete( "option", "source", availableTags);