JSFiddle - React, Tailwind, and code Playground

HTML

<div id="btn">Add ddl</div>
<br/>
<br/>
<div class="containerDiv" id="upload1"></div>
<div class="containerDiv"></div>

CSS

#btn {
     background: none repeat scroll 0 0 #36A9E1;
     color: #FFFFFF;
     border: medium none;
     border-radius: 2px 2px 2px 2px;
     text-shadow: none;
     font-size: 17.5px;
     padding: 11px 19px;
     width:70px;
 }

JavaScript

$("#btn").on('click', function () {
   var arr = ['mno'];
    
    var i = 0;
    $("#upload1").after('<select><option value="abc">abc</option><option value="pqr">pqr</option><option value="xyz">xyz</option> <option value="mno">mno</option></select>');
    $('.containerDiv').each(function () {
        var selected_v = arr[i];
        var ddGenerate = '<select><option value="abc">abc</option><option value="pqr">pqr</option><option value="xyz">xyz</option> <option value="mno">mno</option></select>';
        $(this).append(ddGenerate);
        $(this).find("select option[value='"+selected_v+"']").prop("selected", true);
        i++;
    });
});