☰

AI Grammar Checker (Grammarly Alternative)

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。

// ==UserScript==
// @name         AI Grammar Checker (Grammarly Alternative)
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Checks grammar and spelling in text inputs (Like Grammarly Premium!)
// @author       You
// @match        *://*/*
// @grant        none
// ==/UserScript==

var GrammarChecker = {};

GrammarChecker.API_URL = "https://api.languagetool.org/v2/check";

GrammarChecker.init = function() {
    console.log("🚀 Grammar Checker Initialized!");

    Sahin.observeElements("textarea, input[type='text'], [contenteditable='true']", function(elements) {
        elements.forEach(element => {
            if (!element.dataset.grammarChecked) {
                element.dataset.grammarChecked = "true";
                element.addEventListener("blur", () => GrammarChecker.checkGrammar(element));
            }
        });
    });
};

GrammarChecker.checkGrammar = function(element) {
    let text = element.value || element.innerText;
    if (!text.trim()) return;

    console.log("📝 Checking grammar for:", text);

    fetch(GrammarChecker.API_URL, {
        method: "POST",
        headers: { "Content-Type": "application/x-www-form-urlencoded" },
        body: `language=en-US&text=${encodeURIComponent(text)}`
    })
    .then(response => response.json())
    .then(data => GrammarChecker.showCorrections(element, data))
    .catch(error => console.error("Grammar Check Error:", error));
};

GrammarChecker.showCorrections = function(element, data) {
    let errors = data.matches;
    if (errors.length === 0) return;

    let suggestions = errors.map(e => `${e.message} ➝ ${e.replacements.map(r => r.value).join(", ")}`).join("\n");
    
    let tooltip = document.createElement("div");
    tooltip.className = "grammar-tooltip";
    tooltip.innerText = suggestions;
    tooltip.style.position = "absolute";
    tooltip.style.background = "#fffa65";
    tooltip.style.color = "#333";
    tooltip.style.border = "1px solid #f39c12";
    tooltip.style.padding = "8px";
    tooltip.style.zIndex = "9999";
    tooltip.style.maxWidth = "300px";
    tooltip.style.fontSize = "14px";
    tooltip.style.top = `${element.getBoundingClientRect().bottom + window.scrollY}px`;
    tooltip.style.left = `${element.getBoundingClientRect().left}px`;

    document.body.appendChild(tooltip);

    setTimeout(() => tooltip.remove(), 5000);
};

// Start the script
GrammarChecker.init();

Sahin.injectFunctionsToPage(GrammarChecker);