JSFiddle - React, Tailwind, and code Playground

HTML

<form>
<input type="text" name="category" id="category">
<input type="submit" name="submit" id="submit">
</form>

JavaScript

$('form').submit(function(){
    if ($('#category').val().split(',').length < 10) {
        return false; // prevent page from submitting...
    }
});