JavaScript Element nextElementSibling Property

const first = document.getElementById("div-01");
const next = first.nextElementSibling;

console.log(next.id);
// "div-02"

const a = document.getElementById("a");
// <span id="a">A</span>\\n<span id="b">B</span>

console.log(a.nextSibling.nodeName);           // "#text"
console.log(a.nextElementSibling.tagName);     // "SPAN"
console.log(a.nextElementSibling.textContent); // "B"

let el = document.getElementById("a").nextElementSibling;

while (el) {
  console.log(el.textContent);
  el = el.nextElementSibling;
}
// "B"
// "C"