JSFiddle - React, Tailwind, and code Playground

HTML

<p>Default</p>
<div class="price"></div>

<p>Price with zeroes(should become € 135)</p>
<div class="price-zeroes"></div>

<p>Price with a single zero(should still work as before)</p>
<div class="price-with-one-zero"></div>

Babel + JSX

const currency = 'EUR';
const language = 'NL';

var localePrice = (amount) => {
  const options = {
    style: 'currency',
    currency: currency
  };

  return amount.toLocaleString(language, options);
}

document.querySelector('.price').innerHTML = localePrice(135.21);

document.querySelector('.price-zeroes').innerHTML = localePrice(135.00);

document.querySelector('.price-with-one-zero').innerHTML = localePrice(135.30);