JSFiddle - React, Tailwind, and code Playground

HTML

<form action="">
    <input type="text" required>
    <input type="text" required>
    <input type="reset">
    <input type="submit" value="Ok">
</form>

JavaScript

var reset = document.querySelector('input[type="reset"]'),
    inpElems = document.querySelectorAll('form input[type="text"]');

reset.addEventListener('click', function(e) {
	[].forEach.call(inpElems, function(item) {
    	if( !item.value.length || item.value.search(/^\S+/) )
            e.preventDefault();
    });
});