function() {
  var prodRate=document.querySelector('div.summary.entry-summary > div.woocommerce-product-rating > p').innerText.replace('Product Rate:','');
  var rating = document.querySelectorAll('.star-rating');
  var starRating =[];
  for(i=0;i<rating.length;i++){
  starRating.push(rating[i].innerText)};
  
  var averageRating = starRating || prodRate;  

 return averageRating;
}

I have to return one of the values that is displayed as product rating. On listing page this rating is displayed as "aria-label", and on product page as the value of p. How can i set a one single variable, that returns the needed value of product rating. I am traying above mentioned function, but it doesn't work properly. Thank you a lot and sorry for such newbie question.