[sim4ik-one]

рони,
Так тоже не работает

<div >
  <input type="text" class="entries" value="500" />
  <input type="text" class="entries" value="700" />
  <input type="text" class="entries" value="500" />
  <input type="text" class="entries" value="900" />
  <input type="text" class="entries" value="600" />
  <input type="text" class="entries" value="500" />
</div>
<div id="result"></div>
<script>
window.addEventListener('load', loadContent);

function loadContent() {
   jQuery(document).ready(function($){
	var des = document.getElementsByClassName('entries');
    var len = des, summa = 2000;
    while (len--) summa += +des[len].value;
    result.innerHTML = summa;
   });
}
</script>