This gist showcases specific children element selection its further explained in the DOD article by Yasir Gaji

second-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.children[1]; // HERE THE SPECIFIC METHOD SELECTION "children[1]" SELECTS THE SECOND CHILD OF THE PARENT ELEMENT

val.textContent = 'Ensure To Follow'; // here we manipulate the selected child and change it's text content