Enables Previous and Next page navigation using keyboard buttons on any site. Browse your favorite Manga, Manhwa, comic, novel sites with ease.
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// ==UserScript==
// @name Universal Keyboard Navigation
// @namespace http://tampermonkey.net/
// @version 2024-03-30
// @description Enables Previous and Next page navigation using keyboard buttons on any site. Browse your favorite Manga, Manhwa, comic, novel sites with ease.
// @author Chief Legend
// @match *://*/*
// @exclude *://*.youtube.com/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=universalnavigation.com
// @license MIT
// @grant none
// @noframes
// ==/UserScript==
(function() {
'use strict';
// List of acceptable innerText values for previous and next pages or chapters
const navigationTexts = {
prev: ["Previous Chapter", "Prev Chapter", "Prev Page", "Prev"],
next: ["Next Chapter", "Next Page", "Next"]
};
// Cache for the last found links to improve performance
let lastFoundLinks = {
prev: null,
next: null
};
function findLink(textArray) {
for (let text of textArray) {
let lowerText = text.toLowerCase();
// XPath to find case-insensitive match
let xpath = `//a[contains(translate(., 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'),'${lowerText}')]`;
let link = document.evaluate(xpath, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
if (link) return link;
}
return null;
}
// Function to simulate click on Prev or Next link
function navigate(direction) {
if (lastFoundLinks[direction]) {
// If we have cached the link, use it
lastFoundLinks[direction].click();
return;
}
// Find the link using the list of acceptable values
let link = findLink(navigationTexts[direction]);
// Cache the link for subsequent use
if (link) {
lastFoundLinks[direction] = link;
link.click();
}
}
// Add keydown event listener to the document
document.addEventListener('keydown', function(event) {
// Check if the left arrow key (ArrowLeft) or right arrow key (ArrowRight) was pressed
if (event.key === 'ArrowLeft') {
navigate('prev');
} else if (event.key === 'ArrowRight') {
navigate('next');
}
});
})();