JSFiddle - React, Tailwind, and code Playground

HTML

<div ng-app>
<form ng-init="variants = [{duration:10, price:100}, {duration:30, price:200}]">
    <div ng-repeat="variant in variants" ng-form="variant_form">
        <div>
            <label>Duration:</label>
            <input name="variants[{{$index}}][duration]" ng-model="variant.duration" required />
            <span ng-show="TODO">Duration required</span>
        </div>
        <div>
            <label>Price:</label>
            <input name="variants[{{$index}}][price]" ng-model="variant.price" />
            <span ng-show="TODO">Price required</span>
        </div>
    </div>
</form>
</div>