JSFiddle - React, Tailwind, and code Playground

HTML

<select id="list1">
    <option>One</option>
    <option>Two</option>
    <option>Three</option>
</select>
<div id="container"></div>

JavaScript

var opts = document.getElementById('list1'); 
var str = "<select id=\"duplist\">";

for(var i=0;i<opts.length;i++){
  str+="<option>"+opts[i].text+"</option>";
}
str+="</select>";

document.getElementById("container").innerHTML = str;