JSFiddle - React, Tailwind, and code Playground
by Vince Aggrippino
HTML
<select id="a">
<option>1
<option>2
</select>
<select id="b">
<option>1
<option>2
</select>
<select id="c">
<option>1
<option>2
</select>
<select id="d">
<option>1
<option>2
</select>
<select id="e">
<option>1
<option>2
</select>
<select id="f">
<option>1
<option>2
</select>
JavaScript
$('#a').prop('selectedIndex', -1);
$("#b").prop('selectedIndex', 1);
$("#c").prop('selectedIndex', 2);
$("#d option:nth-child(2)").prop("selected", "selected");
$(function(){
$("#e").prop("selectedIndex", "-1");
});