JSFiddle - React, Tailwind, and code Playground
by jonathon
HTML
<select id="myselect">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select>
<input id="open" type="button" value="Open">
JavaScript
$("#open").click(function(e){
e.preventDefault();
$("#myselect").attr("size",5);
});
$("#myselect").click(function(){
$(this).attr("size",1);
});