JSFiddle - React, Tailwind, and code Playground

HTML

<script>
    function stopSubmit(e){
 e = e || event;
 return (e.keyCode || event.which || event.charCode || 0) !== 13;
}
</script>

<form action="" onkeypress="return stopSubmit(event)">

    <button>innocent button</button>
    <select multiple name="multiple">
    <option selected value="a">A</option>
    <option value="b">B</option>
</select>
<input style="width:300px" type="text" value="press here enter and look at the multiple select" name="" />
</form>

JavaScript

var $button = $('button');

            $button.on('click',function(e){

                $('select option').first().attr('selected',false);
            });