To accomplish this task you will first need to convert the HTMLCollection into an Array it is not already.
From there you can call the
.filter function on the array and check to see if the
nodeName property of each element in the collection matches the condition you are expecting.
In practice that looks like the below example where the last line in the code example filters for and returns all elements in the collection that are
parent = document.querySelectorAll(".blog") collection = Array.from(parent.children) collection.filter(node => node.nodeName == "DIV")