JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container"></div>

<div style="display: none;">
    <div id="myDiv_#">
        <form id="myForm">
            <input type="text" id="start_date" name="start_date" value="someJavascriptVariable" />
            <input type="text" id="end_date" name="end_date" value="someJavascriptVariable" />
            <select name="type" id="type">
                <option value="1">"someJavascriptVariable"</option>
                <option value="2">"someJavascriptVariable"</option>                
            </select>
            <input type="button" id="new_button" value="Show">
        </form>
    </div>
</div>


<button id="button_push">Append</button>

JavaScript

$('#button_push').click(function() {
    var $div = $("#myDiv_\\#").clone(true); // keep events'
    $div.attr('id', '').addClass('clone'); // example of amending attributes
    $("#container").append($div); // append
});