JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.9/jquery.validate.js"></script>
<form id="the_form">
    <input type="text" id="field1" name="options[]" /><br />
    <input type="text" id="field2" name="options[]" /><br />
    <input type="text" id="field3" name="options[]" /><br />
    <input type="submit" value="submit" />
</form>

JavaScript

jQuery("#the_form").validate({
  rules: {
    "options[]": {
      required: true
    }
  }
});