Document.Write elements from querySelectorAll

function showElementsOnClient(elements){

// Select Elements.
var selectedElements = document.querySelectorAll(elements);

// looping through the querySelectorAll NodeList[selectedElements_lenght]
for (i in selectedElements){

// defining selectedElements into the countedElements 
var countedElements = selectedElements[i].innerText;

// checking if the countedElements are not undefined
if (typeof countedElements != "undefined"){
// write the defiend countedElements
	document.write("<p>" + "Pargraph innerText is: " + countedElements + "</p>" + "</br>");
  
}
else{

// throw the undefined values
  console.log("can't read undefined value");
  
}
// end for
}
// end function
}

// calling the function
showElementsOnClient("elements")