JSFiddle - React, Tailwind, and code Playground

HTML

<select name="hit">
    <option selected="selected"></option>
    <option value="false">выбор</option>
    <option value="true">выбор2</option>
</select>
<button type="button">Button</button>

JavaScript

$("body").on('click', 'button', function() {

    var sO = $("select[name=hit] option:selected");

    if (sO.val() === 'false') {
        alert("NoWay!");
        return false;
    }

});