JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.9/jquery.validate.js"></script>
<form id="sales">
  Min Trucks: <input id="minTruck" name="minTruck" type="text" class="number" />
  Max Trucks: <input id="maxTruck" name="maxTruck" type="text" class="number" /><br />
  Min Tractors: <input id="minTractor" name="minTractor" type="text" class="number" />
  Max Tractors: <input id="maxTractor" name="maxTractor" type="text" class="number" />
</form>

JavaScript

$.validator.addMethod("greaterThan",
    function(value, max, min){
        return parseInt(value) > parseInt($(min).val());
    }, "Max must be greater than min"
);

$('#sales').validate({
  rules: {
    maxTruck: {greaterThan: '#minTruck'}
  }
});