Add CTRL+ArrowLeft and CTRL+ArrowRight for generic next/previous page. It will click the last found link/button whose text starts/ends with e.g. "Next", "Prev", "Back", or "Previous".
As of
// ==UserScript==
// @name Add Keyboard Shortcut for Generic Next/Previous Page
// @namespace AddKeyboardShortcutForGenericNextPreviousPage
// @version 1.0.15
// @license GNU AGPLv3
// @author jcunews
// @description Add CTRL+ArrowLeft and CTRL+ArrowRight for generic next/previous page. It will click the last found link/button whose text starts/ends with e.g. "Next", "Prev", "Back", or "Previous".
// @website https://greasyfork.org/en/users/85671-jcunews
// @include *://*/*
// @include *:*
// @grant none
// ==/UserScript==
/*
The link/button text more specifically, are those which starts with (non case sesitive) "Next", "Prev", "Previous";
or ends with "Prev", "Back", "Previous", "Next". e.g. "Next", "> Next", "Next Page", "Prev", "< Prev", "< Previous", etc.
but not "< Prev Page" because the word "prev" or "previous" is not at the start/end of text.
This script doesn't take into account of links whose contents is an image rather than text, or whose text is a CSS text contents.
If next/previous navigation link is specified in the HTML metadata, it will be used as a priority.
*/
(function(rxPrev, rxNext, ts) {
rxPrevious = /\u00ab|\b(?:back|prev(ious)?)\b/i;
rxNext = /\u00bb|\bnext\b/i;
rxCarousel = /carousel/i;
addEventListener("keydown", function(ev, e) {
function clickLink(rx, e, i, l, r, rx2) {
rx2 = new RegExp("[a-z].*?" + rx.source, "i");
e = document.querySelectorAll('a,button,input[type="button"],input[type="submit"]');
for (i = e.length - 1; i >= 0; i--) {
if (
(
((e[i].tagName === "A") && rx.test(e[i].rel) && !rx2.test(e[i].rel)) ||
((e[i].tagName === "A") && Array.from(e[i].classList).some(cl => rx.test(cl) && !rx2.test(cl))) ||
((e[i].tagName === "INPUT") && rx.test(e[i].value) && !rx2.test(e[i].value)) ||
(rx.test(e[i].textContent) && !rx2.test(e[i].textContent))
) && (!rxCarousel.test(e[i].className))
) {
ev.preventDefault();
e[i].click();
return true;
}
}
return false;
}
if (ev.ctrlKey && !ev.altKey && !ev.shiftKey) {
if (document.activeElement && (
(/^(INPUT|TEXTAREA)$/).test(document.activeElement.tagName) ||
document.activeElement.isContentEditable)) return;
switch (ev.key) {
case "ArrowLeft": //previous
if (e = document.querySelector('link[rel="prev"][href]')) {
ev.preventDefault();
location.href = e.href;
return;
}
if (clickLink(rxPrevious)) return;
break;
case "ArrowRight": //next
if (e = document.querySelector('link[rel="next"][href]')) {
ev.preventDefault();
location.href = e.href;
return;
}
if (clickLink(rxNext)) return;
break;
}
}
}, true);
})();