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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".

目前为 2020-02-01 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     1.0.7
  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. If next/previous navigation link is specified in the HTML metadata, it will be used as a priority.
  20. */
  21.  
  22. (function(rxPrev, rxNext) {
  23.   rxPrevious = /^prev(ious)?\b|\bprev(ious)?$/i;
  24.   rxNext = /^next\b|\bnext$/i;
  25.   rxCarousel = /carousel/i;
  26.  
  27.   addEventListener("keydown", function(ev, e) {
  28.  
  29.     function clickLink(rx, e, i, r) {
  30.       e = document.querySelectorAll('a,button,input[type="button"],input[type="submit"]');
  31.       for (i = e.length-1; i >= 0; i--) {
  32.         if (
  33.           (
  34.             ((e[i].tagName === "A") && rx.test(e[i].getAttribute("rel"))) ||
  35.             ((e[i].tagName === "INPUT") && rx.test(e[i].getAttribute("value"))) ||
  36.             ((e[i].tagName !== "INPUT") && rx.test(e[i].textContent.trim()))
  37.           ) && (!rxCarousel.test(e[i].className))
  38.         ) {
  39.           ev.preventDefault();
  40.           e[i].click();
  41.           return true;
  42.         }
  43.       }
  44.       return false;
  45.     }
  46.  
  47.     if (ev.ctrlKey && !ev.altKey && !ev.shiftKey) {
  48.       if (document.activeElement && (
  49.         (/^(INPUT|TEXTAREA)$/).test(document.activeElement.tagName) ||
  50.         document.activeElement.isContentEditable)) return;
  51.       switch (ev.key) {
  52.         case "ArrowLeft": //previous
  53.           if (e = document.querySelector('link[rel="prev"][href]')) {
  54.             location.href = e.href;
  55.             return;
  56.           }
  57.           if (clickLink(rxPrevious)) return;
  58.           break;
  59.         case "ArrowRight": //next
  60.           if (e = document.querySelector('link[rel="next"][href]')) {
  61.             location.href = e.href;
  62.             return;
  63.           }
  64.           if (clickLink(rxNext)) return;
  65.           break;
  66.       }
  67.     }
  68.   });
  69. })();

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