JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-2.0.3.min.js"></script>
Start Month:<input type='text' value='2012/1/1' id='startDate'/>
<br />
End Month:<input type='text' value='2012/12/1' id='endDate'/>
<br />
Start Price:<input type='text' value='100' id='startPrice' />
<br />
<button id='calc'>Calculate</button>
<br />
End Price:<input type='text' value=''  id='endPrice'/>
<br />
<a href="www.statbureau.org">www.statbureau.org</a>

JavaScript

var apiUrl = 'http://www.statbureau.org/calculate-inflation-price-jsonp?jsoncallback=?';

$('#calc').on('click', function calculate() {
  $.getJSON(apiUrl, {
      country: 'united-states',
      start: $('#startDate').val(),
      end: $('#endDate').val(),
      amount: $('#startPrice').val(),
      format: true
    })
    .done(function (data) {
      $('#endPrice').val(data);
    });
});