Find and print all headings on the given web page

print-headings.console.js

document.querySelectorAll("h1,h2,h3,h4,h5,h6,[role=heading][aria-level]").forEach(node => {
    let level = node.getAttribute("aria-level") || node.tagName[1];
    let prefix = " ".repeat(parseInt(level) - 1);
    console.log(`${prefix}${level}: ${node.textContent}`);
});