JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-2.2.0.min.js"></script>

   

     <input type="button" id="add_prod" name="add_prod" value="Add Option " >

JavaScript

$(document).ready(function (){
      $("#add_prod").on("click", function (){

        if ($("#dynamicInput").height() == 200) {
           $("#dynamicInput").animate({height: "300px"});
           }
        else if ($("#dynamicInput").height() == 300) {
           $("#dynamicInput").animate({height: "200px"});
           }
        });
    });