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Links to Next and Previous Posts

Add links to next and previous posts to each post

目前为 2019-11-23 提交的版本。查看 最新版本。

  1. // ==UserScript==
  2. // @name         Links to Next and Previous Posts
  3. // @namespace    https://greasyfork.org/en/users/163551-vannius
  4. // @version      1.5
  5. // @license      MIT
  6. // @description  Add links to next and previous posts to each post
  7. // @author       Vannius
  8. // @match        https://www.alternatehistory.com/forum/threads/*
  9. // @match        https://forums.spacebattles.com/threads/*
  10. // @grant        none
  11. // ==/UserScript==
  12.  
  13. (function () {
  14.     if (window.location.host === "www.alternatehistory.com") {
  15.         // Get hash links from divTags and store in hashLinks
  16.         const divTags = document.getElementsByClassName('messageBarNumber');
  17.         const hashLinks = Array.from(divTags).map((element) => element.children[0].href);
  18.         // Very first post of thread's divTag.children[0].href don't have #.
  19.         if (window.location.href.split('/')[6] === '') hashLinks[0] += '#' + divTags[0].parentNode.parentNode.id;
  20.  
  21.         for (let i = 0; i < divTags.length; i++) {
  22.             // Add a link to next post
  23.             if (i !== divTags.length - 1) {
  24.                 const nextPost = document.createElement('a');
  25.                 nextPost.title = "Next post";
  26.                 nextPost.href = hashLinks[i + 1];
  27.                 nextPost.appendChild(document.createTextNode('▼'));
  28.                 divTags[i].appendChild(nextPost);
  29.             }
  30.             // Add a link to prev post
  31.             if (i !== 0) {
  32.                 const prevPost = document.createElement('a');
  33.                 prevPost.title = "Prev post";
  34.                 prevPost.href = hashLinks[i - 1];
  35.                 prevPost.appendChild(document.createTextNode('▲'));
  36.                 const fragment = document.createDocumentFragment();
  37.                 fragment.appendChild(prevPost);
  38.                 fragment.appendChild(document.createTextNode('\n'));
  39.                 divTags[i].insertBefore(fragment, divTags[i].children[0]);
  40.             }
  41.             // Add a link to current post
  42.             if (i === 0 || i === divTags.length - 1) {
  43.                 const currentPost = document.createElement('a');
  44.                 currentPost.title = "Current post";
  45.                 currentPost.href = hashLinks[i];
  46.                 currentPost.appendChild(document.createTextNode('◈'));
  47.                 if (i === 0) {
  48.                     const fragment = document.createDocumentFragment();
  49.                     fragment.appendChild(currentPost);
  50.                     fragment.appendChild(document.createTextNode('\n'));
  51.                     divTags[i].insertBefore(fragment, divTags[i].children[0]);
  52.                 } else if (i === divTags.length - 1) {
  53.                     divTags[i].appendChild(currentPost);
  54.                 }
  55.             }
  56.         }
  57.     } else if (window.location.host === "forums.spacebattles.com") {
  58.         // Get message ids from messageTags and make in hashLinks
  59.         const messageTags = document.querySelectorAll('.message-attribution-opposite--list > li:nth-child(3)');
  60.         const hashLinks = Array.from(messageTags).map(element => '#' + element.closest('article').id);
  61.  
  62.         for (let i = 0; i < messageTags.length; i++) {
  63.             // Add a link to next post
  64.             if (i !== messageTags.length - 1) {
  65.                 const nextPost = document.createElement('a');
  66.                 nextPost.title = "Next post";
  67.                 nextPost.href = hashLinks[i + 1];
  68.                 nextPost.appendChild(document.createTextNode('▼'));
  69.                 const liTag = document.createElement('li');
  70.                 liTag.appendChild(nextPost);
  71.                 messageTags[i].parentElement.appendChild(liTag);
  72.             }
  73.  
  74.             // Add a link to prev post
  75.             if (i !== 0) {
  76.                 const prevPost = document.createElement('a');
  77.                 prevPost.title = "Prev post";
  78.                 prevPost.href = hashLinks[i - 1];
  79.                 prevPost.appendChild(document.createTextNode('▲'));
  80.                 const liTag = document.createElement('li');
  81.                 liTag.appendChild(prevPost);
  82.                 messageTags[i].parentElement.insertBefore(liTag, messageTags[i]);
  83.             }
  84.  
  85.             // Add a link to current post
  86.             if (i === 0 || i === messageTags.length - 1) {
  87.                 const currentPost = document.createElement('a');
  88.                 currentPost.title = "Current post";
  89.                 currentPost.href = hashLinks[i];
  90.                 currentPost.appendChild(document.createTextNode('◈'));
  91.                 const liTag = document.createElement('li');
  92.                 liTag.appendChild(currentPost);
  93.                 if (i === 0) {
  94.                     messageTags[i].parentElement.insertBefore(liTag, messageTags[i]);
  95.                 } else if (i === messageTags.length - 1) {
  96.                     messageTags[i].parentElement.appendChild(liTag);
  97.                 }
  98.             }
  99.         }
  100.     }
  101. })();