BBC: scroll with j and k keys
Lets you scroll the article down with the "j" key and up with the "k" key without reaching for the mouse.
Code to copy
// Use j and k keys to scroll the article down and up
(function () {
document.addEventListener('keydown', function (e) {
var t = e.target;
if (t && (t.tagName === 'INPUT' || t.tagName === 'TEXTAREA' ||
t.isContentEditable)) { return; }
if (e.key === 'j') {
window.scrollBy({ top: 400, behavior: 'smooth' });
} else if (e.key === 'k') {
window.scrollBy({ top: -400, behavior: 'smooth' });
}
});
})();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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