JSFiddle - React, Tailwind, and code Playground

HTML

<select class='ownlevelselect' id='ownlevelselect1' name='level-1' ></select><br />
    <select class='ownlevelselect' id='ownlevelselect2' name='level-2' >
        <option>test</option>
    </select><br />
    <select class='ownlevelselect' id='ownlevelselect3' name='level-3' ></select><br /><br />
    <input type='submit' name='submit_values' value='Save' />
    <input type='submit' name='store_values' value='Store' />

JavaScript

$('document').ready(function(){

    var submitButton = $('input[name="store_values"]');
    submitButton.prop('disabled',$(".ownlevelselect:empty").length > 0);
});