This gist indicates how to call child nodes of an element its further explained in the DOD article by Yasir Gaji

first-instance-1.js

let val; // initilizing alpha variable

const list = document.querySelector('ul.showcase'); // assigning sub variable "list" to the ul in the html collection

val = list.childNodes; // HERE THE METHOD "childNodes" IS ASSIGNED TO THE "list" VARIABLE TO GET IT'S CHILD NODES

console.log(val); // calling the alpha variable