JSFiddle - React, Tailwind, and code Playground

HTML

<select id="s" name="s">
<option value="0">-</option>
<option value="1">A</option>
<option value="2" selected>B</option>
<option value="3">C</option>
</select>

JavaScript

$.fn.valScreen = function(value){
 if( this.is("select") && this.find("option[value="+value+"]").length != 0 )
   this.val(value);
 return this;
};
$("#s").valScreen("4");
setTimeout(function(){
 $("#s").valScreen("3");
},5000);