JSFiddle - React, Tailwind, and code Playground

HTML

<div id="mnc"> hello
</div>
<div id="slpt">
    <select id="slt">
        <option value="0">Option1</option>
        <option>Option2</option>
        <option>Option3</option>
        <option>Option4</option>
        <option>Option5</option>
</select>
</div>

JavaScript

$(document).ready(function(){
 $('#mnc').bind({
  mouseenter: function(e) {    
     $('#slt').attr('selected', 'Option1');        
  }
 });
});