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Add Keyboard Shortcut for Generic Next/Previous Page

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", or "Previous".

当前为 2019-12-12 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        Add Keyboard Shortcut for Generic Next/Previous Page
  3. // @namespace   AddKeyboardShortcutForGenericNextPreviousPage
  4. // @version     1.0.5
  5. // @license     GNU AGPLv3
  6. // @author      jcunews
  7. // @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", or "Previous".
  8. // @include     *://*/*
  9. // @grant       none
  10. // ==/UserScript==
  11.  
  12. /*
  13. The link/button text more specifically, are those which starts with (non case sesitive) "Next", "Prev", "Previous";
  14. or ends with "Prev", "Previous", "Next". e.g. "Next", "> Next", "Next Page", "Prev", "< Prev", "< Previous", etc.
  15. but not "< Prev Page" because the word "prev" or "previous" is not at the start/end of text.
  16.  
  17. 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.
  18. */
  19.  
  20. (function(rxPrev, rxNext) {
  21.   rxPrevious = /^prev(ious)?\b|\bprev(ious)?$/i;
  22.   rxNext = /^next\b|\bnext$/i;
  23.  
  24.   addEventListener("keydown", function(ev) {
  25.  
  26.     function clickLink(rx, e, i, r) {
  27.       e = document.querySelectorAll('a,button,input[type="button"],input[type="submit"]');
  28.       for (i = e.length-1; i >= 0; i--) {
  29.         if (
  30.           ((e[i].tagName === "A") && rx.test(e[i].getAttribute("rel"))) ||
  31.           ((e[i].tagName === "INPUT") && rx.test(e[i].getAttribute("value"))) ||
  32.           ((e[i].tagName !== "INPUT") && rx.test(e[i].textContent.trim()))
  33.         ) {
  34.           ev.preventDefault();
  35.           e[i].click();
  36.           return true;
  37.         }
  38.       }
  39.       return false;
  40.     }
  41.  
  42.     if (ev.ctrlKey && !ev.altKey && !ev.shiftKey) {
  43.       if (document.activeElement && (
  44.         (/^(INPUT|TEXTAREA)$/).test(document.activeElement.tagName) ||
  45.         document.activeElement.isContentEditable)) return;
  46.       switch (ev.key) {
  47.         case "ArrowLeft": //previous
  48.           if (clickLink(rxPrevious)) return;
  49.           break;
  50.         case "ArrowRight": //next
  51.           if (clickLink(rxNext)) return;
  52.           break;
  53.       }
  54.     }
  55.   });
  56. })();