Jump between headings with Alt+J/K
Alt+J jumps to the next heading, Alt+K to the previous one for fast navigation of long pages.
Code to copy
var headings = Array.prototype.slice.call(document.querySelectorAll('h1, h2, h3'));
var idx = -1;
document.addEventListener('keydown', function (e) {
var tag = (e.target.tagName || '').toLowerCase();
if (tag === 'input' || tag === 'textarea' || e.target.isContentEditable) return;
if (!e.altKey) return;
if (e.key === 'j') { idx = Math.min(idx + 1, headings.length - 1); }
else if (e.key === 'k') { idx = Math.max(idx - 1, 0); }
else { return; }
e.preventDefault();
if (headings[idx]) {
headings[idx].scrollIntoView({ behavior: 'smooth', block: 'start' });
}
});How to use this example
- Copy the code with the button above.
- Install JustZix (2 minutes) and open the extension on the target page.
- Add a new rule matching that page.
- Paste the code into the rule's JavaScript panel and save — it runs on every page visit.
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