☰

AI Grammar Checker (Grammarly Alternative) for Violentmonkey

Checks grammar and spelling in text inputs (Like Grammarly Premium!)

当前为 2025-02-13 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         AI Grammar Checker (Grammarly Alternative) for Violentmonkey
  3. // @namespace    http://violentmonkey.net/
  4. // @version      1.2
  5. // @description  Checks grammar and spelling in text inputs (Like Grammarly Premium!)
  6. // @author       You
  7. // @match        *://*/*
  8. // @grant        GM_xmlhttpRequest
  9. // @connect      api.languagetool.org
  10. // ==/UserScript==
  11.  
  12. var GrammarChecker = {};
  13.  
  14. GrammarChecker.API_URL = "https://api.languagetool.org/v2/check";
  15.  
  16. GrammarChecker.init = function() {
  17.     console.log("🚀 Grammar Checker Loaded for Violentmonkey!");
  18.  
  19.     // Observe text inputs and editable divs
  20.     let observer = new MutationObserver(() => {
  21.         document.querySelectorAll("textarea, input[type='text'], [contenteditable='true']").forEach(element => {
  22.             if (!element.dataset.grammarChecked) {
  23.                 element.dataset.grammarChecked = "true";
  24.                 element.addEventListener("blur", () => GrammarChecker.checkGrammar(element));
  25.             }
  26.         });
  27.     });
  28.  
  29.     observer.observe(document.body, { childList: true, subtree: true });
  30. };
  31.  
  32. GrammarChecker.checkGrammar = function(element) {
  33.     let text = element.value || element.innerText;
  34.     if (!text.trim()) return;
  35.  
  36.     console.log("📝 Checking grammar for:", text);
  37.  
  38.     GM_xmlhttpRequest({
  39.         method: "POST",
  40.         url: GrammarChecker.API_URL,
  41.         headers: { "Content-Type": "application/x-www-form-urlencoded" },
  42.         data: `language=en-US&text=${encodeURIComponent(text)}`,
  43.         onload: function(response) {
  44.             if (response.status === 200) {
  45.                 let data = JSON.parse(response.responseText);
  46.                 GrammarChecker.showCorrections(element, data);
  47.             } else {
  48.                 console.error("❌ API Error:", response.statusText);
  49.             }
  50.         },
  51.         onerror: function(error) {
  52.             console.error("❌ Network Error:", error);
  53.         }
  54.     });
  55. };
  56.  
  57. GrammarChecker.showCorrections = function(element, data) {
  58.     let errors = data.matches;
  59.     if (errors.length === 0) {
  60.         console.log("✅ No errors found.");
  61.         return;
  62.     }
  63.  
  64.     // Remove old tooltips
  65.     document.querySelectorAll(".grammar-tooltip").forEach(e => e.remove());
  66.  
  67.     let suggestions = errors.map(e => `${e.message} ➝ ${e.replacements.map(r => r.value).join(", ")}`).join("\n");
  68.  
  69.     let tooltip = document.createElement("div");
  70.     tooltip.className = "grammar-tooltip";
  71.     tooltip.innerText = suggestions;
  72.  
  73.     tooltip.style.position = "absolute";
  74.     tooltip.style.background = "#fffa65";
  75.     tooltip.style.color = "#333";
  76.     tooltip.style.border = "1px solid #f39c12";
  77.     tooltip.style.padding = "8px";
  78.     tooltip.style.zIndex = "9999";
  79.     tooltip.style.maxWidth = "300px";
  80.     tooltip.style.fontSize = "14px";
  81.     tooltip.style.top = `${element.getBoundingClientRect().bottom + window.scrollY}px`;
  82.     tooltip.style.left = `${element.getBoundingClientRect().left}px`;
  83.  
  84.     document.body.appendChild(tooltip);
  85.  
  86.     setTimeout(() => tooltip.remove(), 5000);
  87. };
  88.  
  89. // Start the script
  90. GrammarChecker.init();
  91.  
  92.