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Show Amazon Questions button + context menu

Creates a "Show questions" button for Amazon. Once clicked it opens a new tab of the questions.

当前为 2023-12-24 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name     Show Amazon Questions button + context menu
  3. // @author   u/iNeedAProperAccount
  4. // @description Creates a "Show questions" button for Amazon. Once clicked it opens a new tab of the questions.
  5. //              It also creates an "Open Questions tab" context menu entry, which also when clicked opens a new tab of the questions.
  6. //              Thanks to u/CaptSkinny, u/lilgeeky, u/Sanpete_in_Utah and u/TTum.
  7. //              How it looks like:
  8. //              https://i.imgur.com/mZSLDun.png
  9. //              https://i.imgur.com/GHmUuEM.png
  10. //              Original thread at: https://old.reddit.com/r/AmazonVine/comments/14aynxt/are_product_question_and_answer_sections_gone/
  11. // @version  0.4
  12. // @license  MIT
  13. // @match    *://*.amazon.com/*
  14. // @match    *://*.amazon.ca/*
  15. // @match    *://*.amazon.com.mx/*
  16. // @match    *://*.amazon.co.uk/*
  17. // @match    *://*.amazon.fr/*
  18. // @match    *://*.amazon.de/*
  19. // @match    *://*.amazon.es/*
  20. // @match    *://*.amazon.it/*
  21. // @match    *://*.amazon.nl/*
  22. // @match    *://*.amazon.se/*
  23. // @match    *://*.amazon.pl/*
  24. // @match    *://*.amazon.com.tr/*
  25. // @match    *://*.amazon.ae/*
  26. // @match    *://*.amazon.sa/*
  27. // @match    *://*.amazon.co.jp/*
  28. // @match    *://*.amazon.in/*
  29. // @match    *://*.amazon.sg/*
  30. // @match    *://*.amazon.com.au/*
  31. // @match    *://*.amazon.com.br/*
  32. // @icon     https://www.google.com/s2/favicons?sz=64&domain=amazon.ca
  33. // @grant    GM_registerMenuCommand
  34. // @namespace https://greasyfork.org/users/877912
  35. // ==/UserScript==
  36.  
  37. const PRODUCT_TITLE_SELECTOR = "span#productTitle";
  38. const REGEX_PATTERN = "^(http[s]?://[^/]+)/(?:.+?/)?(?:dp|gp/product|asin)/(?:.+?/)?([a-zA-Z0-9]{10})(?:[/?]|$)";
  39.  
  40. function getQuestionsUrl() {
  41.     try {
  42.         const url = document.URL;
  43.         const regex = new RegExp(REGEX_PATTERN, "i");
  44.         const matches = url.match(regex);
  45.  
  46.         if (matches) {
  47.             const scheme_and_host = matches[1];
  48.             const asin = matches[2];
  49.             if (scheme_and_host && asin) {
  50.                 return `${scheme_and_host}/ask/questions/asin/${asin}`;
  51.             }
  52.         }
  53.     } catch (error) {
  54.         console.error("Error in getQuestionsUrl:", error);
  55.     }
  56. }
  57.  
  58. function contextOpenQuestionsTab() {
  59.     try {
  60.         const questions_url = getQuestionsUrl();
  61.         if (questions_url) {
  62.             window.open(questions_url, '_blank');
  63.         }
  64.     } catch (error) {
  65.         console.error("Error in contextOpenQuestionsTab:", error);
  66.     }
  67. }
  68.  
  69. function openQuestionsTab() {
  70.     try {
  71.         const questions_url = getQuestionsUrl();
  72.  
  73.         if (questions_url) {
  74.             const reviewDiv = document.querySelector(PRODUCT_TITLE_SELECTOR);
  75.  
  76.             if (reviewDiv) {
  77.                 const button = document.createElement("button");
  78.                 button.innerHTML = "Show Questions";
  79.                 button.style.margin = '0.2rem 0.2rem 0.2rem 0rem';
  80.                 button.style.fontSize = '0.9rem';
  81.                 button.addEventListener("click", function () {
  82.                     window.open(questions_url, '_blank');
  83.                 });
  84.  
  85.                 const brElement = document.createElement("br");
  86.                 reviewDiv.parentNode.insertBefore(brElement, reviewDiv.nextSibling);
  87.  
  88.                 reviewDiv.parentNode.insertBefore(button, brElement.nextSibling);
  89.  
  90.                 const brAfter = document.createElement("br");
  91.                 reviewDiv.parentNode.insertBefore(brAfter, button.nextSibling);
  92.  
  93.                 GM_registerMenuCommand("Open Questions tab", contextOpenQuestionsTab, "a");
  94.             }
  95.         }
  96.     } catch (error) {
  97.         console.error("Error in openQuestionsTab:", error);
  98.     }
  99. }
  100.  
  101. const observer = new MutationObserver(function (mutations) {
  102.     try {
  103.         mutations.forEach(function (mutation) {
  104.             if (mutation.type === 'childList' && mutation.addedNodes.length > 0) {
  105.                 for (let i = 0; i < mutation.addedNodes.length; i++) {
  106.                     const addedNode = mutation.addedNodes[i];
  107.                     if (addedNode.nodeType === 1 && addedNode.matches && addedNode.matches(PRODUCT_TITLE_SELECTOR)) {
  108.                         openQuestionsTab();
  109.                         break;
  110.                     }
  111.                 }
  112.             }
  113.         });
  114.     } catch (error) {
  115.         console.error("Error in MutationObserver:", error);
  116.     }
  117. });
  118.  
  119. const observerConfig = {
  120.     childList: true,
  121.     subtree: true
  122. };
  123.  
  124. try {
  125.     observer.observe(document.body, observerConfig);
  126.     openQuestionsTab();
  127. } catch (error) {
  128.     console.error("Error in script initialization:", error);
  129. }