JSFiddle - React, Tailwind, and code Playground
by tymeJV
HTML
<select multiple>
<option value="volvo" selected>Volvo</option>
<option value="saab" selected>Saab</option>
<option value="opel">Opel</option>
<option value="audi">Audi</option>
</select>
<input type="button" value="unselect" id="btn" />
JavaScript
$("select option:selected").click(function() {
$(this).prop("selected", false);
});