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V2EX Ignore

在 V2EX 的每个帖子标题旁添加一个“忽略”按钮，单击即可忽略该主题。

  1. // ==UserScript==
  2. // @name         V2EX Ignore
  3. // @license GNU GPLv3
  4. // @namespace    https://www.example.com/
  5. // @version      2.0
  6. // @description  Adds an "Ignore" button next to each post's title on V2EX that allows you to ignore the topic with a single click.
  7. // @description:zh-CN 在 V2EX 的每个帖子标题旁添加一个“忽略”按钮，单击即可忽略该主题。
  8. // @description:zh-TW 在 V2EX 的每個帖子標題旁添加一個“忽略”按鈕，單擊即可忽略該主題。
  9. // @description:ja 在 V2EX の各投稿タイトルの横に、「無視する」ボタンを追加し、クリックするだけでそのトピックを無視できます。
  10. // @author       Arryboom
  11. // @match        https://*.v2ex.com/*
  12. // @match        https://v2ex.com/*
  13. // @grant        GM_xmlhttpRequest
  14. // @run-at       document-end
  15. // ==/UserScript==
  16.  
  17. (function() {
  18.   'use strict';
  19.  
  20.   // Function to ignore a topic
  21.   function ignoreTopic(event) {
  22.     event.preventDefault();
  23.     const topicLink = event.target.parentNode.querySelector('.item_title a');
  24.     if (topicLink) {
  25.       const topicUrl = topicLink.href;
  26.       const topicId = getTopicIdFromUrl(topicUrl);
  27.       if (topicId) {
  28.         getOnce().then(onceValue => {
  29.           const ignoreUrl = `https://${window.location.hostname}/ignore/topic/${topicId}?once=${onceValue}`;
  30.           GM_xmlhttpRequest({
  31.             method: 'GET',
  32.             url: ignoreUrl,
  33.             onload: function(response) {
  34.               const post = event.target.closest('.cell.item');
  35.               if (post) {
  36.                 post.remove();
  37.                 showToast(`Topic ${topicId} ignored.`);
  38.               }
  39.             },
  40.             onerror: function(error) {
  41.               console.error(`Error ignoring topic ${topicId}: ${error}`);
  42.             }
  43.           });
  44.         }).catch(error => {
  45.           console.error(`Error fetching once value: ${error}`);
  46.         });
  47.       }
  48.     }
  49.   }
  50.  
  51.   // Function to extract the topic ID from a topic URL
  52.   function getTopicIdFromUrl(topicUrl) {
  53.     const match = topicUrl.match(/\/t\/(\d+)/);
  54.     if (match) {
  55.       return match[1];
  56.     }
  57.     return null;
  58.   }
  59.  
  60.   // Function to fetch the current once value from the V2EX server
  61.   function getOnce() {
  62.     return CSRF.getOnceCode()
  63.       .then(code => {
  64.         return code;
  65.       })
  66.       .catch(err => {
  67.         console.error(err);
  68.         throw err;
  69.       });
  70.   }
  71.  
  72.   class CSRF {
  73.     static getOnceCode() {
  74.       return new Promise((resolve, reject) => {
  75.         fetch('/settings/block')
  76.           .then(resp => resp.text())
  77.           .then(text => {
  78.             const code = CSRF.parseOnceCode(text);
  79.             resolve(code);
  80.           })
  81.           .catch(reject);
  82.       });
  83.     }
  84.  
  85.     static parseOnceCode(text) {
  86.       return text.match(/once=(\d+)/)[1];
  87.     }
  88.   }
  89.  
  90.   // Function to display a toast message
  91.   function showToast(message) {
  92.     const toast = document.createElement('div');
  93.     toast.textContent = message;
  94.     toast.style.position = 'fixed';
  95.     toast.style.bottom = '20px';
  96.     toast.style.right = '20px';
  97.     toast.style.padding = '10px';
  98.     toast.style.backgroundColor = '#333';
  99.     toast.style.color = '#fff';
  100.     toast.style.borderRadius = '5px';
  101.     document.body.appendChild(toast);
  102.     setTimeout(() => {
  103.       toast.remove();
  104.     }, 3000);
  105.   }
  106.  
  107.   // Find all post titles on the page and add an "Ignore" button next to each one
  108.   const postTitles = document.querySelectorAll('.cell.item .item_title');
  109.   postTitles.forEach(postTitle => {
  110.     const ignoreButton = document.createElement('a');
  111.     ignoreButton.textContent = 'Ignore';
  112.     ignoreButton.href = '#';
  113.     ignoreButton.classList.add('tag');
  114.     ignoreButton.addEventListener('click', ignoreTopic);
  115.     postTitle.parentNode.insertBefore(ignoreButton, postTitle.nextSibling);
  116.   });
  117. })();