Copy option list from dropdownlist. JQuery

Question

Html code

<select id="dropdwon1">
 <option value="1">Item1</option>
 <option value="2">Item2</option>
 <option value="3">Item3</option>
</select>

<select id="dropdwon2"></select>

I need copy all options from dropdown1 to dropdown2, using jQuery. Whether it is possible to copy contents simply?

Answer 1

$('#dropdwon1 option').clone().appendTo('#dropdwon2');

jsfiddle link