how to get the value from

i have html code and i need to get value from <h> element that is placed in a <li> element so i tried the following code

<li class="product-price">
    <h3> 7 406,10 dollar    </h3>
 <!-- close price -->
        </li>
                
<script>
function myFunction() {
  var x = document.getElementsByClassName("product-price");
  alert(x.item(0).innerHTML);
}
</script>

          

but i am getting [https://ift.tt/2YE205L]