JSFiddle - React, Tailwind, and code Playground

by stefchrif

HTML

<select id="sel1">
<option value="">Please select an option</option>
<option value="1">Val1</option>
<option value="2">Val2</option>
<option value="3">Val3</option>
</select>
<button id="btn">
fire
</button>

JavaScript

// click on button
$('#btn').click( function() {
  //$('#sel1').find('option[value="2"]').prop('selected', true);
  var size = $('#sel1 option').length;
  if (size != $("#sel1").prop('size')) {
      $("#sel1").prop('size', size);
  } else {
      $("#sel1").prop('size', 1);
  }
});