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搜索时自动注入 -site:csdn.net 过滤CSDN
// ==UserScript==
// @name FUCK CSDN（去除csdn搜索结果—百度/Google/Bing）
// @version 1.6
// @namespace http://greasyfork.icu/users/timmy
// @license MIT
// @icon https://free.picui.cn/free/2026/04/27/69eefef831bfd.png
// @description 搜索时自动注入 -site:csdn.net 过滤CSDN
// @author timmy
// @match *://www.google.com/*
// @match *://www.google.com.hk/*
// @match *://www.google.co.jp/*
// @match *://www.baidu.com/*
// @match *://www.bing.com/*
// @run-at document-start
// @grant none
// ==/UserScript==
(function () {
'use strict';
const BLOCKED = ['csdn.net'];
const EXCLUDE_SUFFIX = BLOCKED.map(d => `-site:${d}`).join(' ');
function getEngine() {
const h = location.hostname;
if (h.includes('baidu.com')) return 'baidu';
if (h.includes('google.')) return 'google';
if (h.includes('bing.com')) return 'bing';
return null;
}
function getInputSelector(engine) {
if (engine === 'baidu') return '#kw';
if (engine === 'google') return 'input[name="q"]';
if (engine === 'bing') return '#sb_form_q';
return null;
}
function getParamName(engine) {
if (engine === 'baidu') return 'wd';
return 'q';
}
function stripExclude(val) {
if (!val) return '';
return BLOCKED.reduce((acc, d) => {
return acc.replace(new RegExp(`\\s*-site:${d.replace('.', '\\.')}`, 'gi'), '');
}, val).trimEnd();
}
function injectExclude(val) {
const base = stripExclude(val).trimEnd();
if (!base) return base;
return base + ' ' + EXCLUDE_SUFFIX;
}
// 注入 URL 字符串里的搜索参数
function injectUrl(url) {
try {
const urlObj = new URL(url, location.origin);
// 只处理百度搜索路径
if (!urlObj.pathname.startsWith('/s') && urlObj.pathname !== '/') return url;
const params = ['wd', 'word', 'kw'];
let changed = false;
for (const p of params) {
const val = urlObj.searchParams.get(p);
if (val) {
const injected = injectExclude(val);
if (injected !== val) {
urlObj.searchParams.set(p, injected);
changed = true;
}
}
}
return changed ? urlObj.toString() : url;
} catch (e) {
return url;
}
}
// 拦截百度的 XHR 请求
function interceptXHR() {
const OrigOpen = XMLHttpRequest.prototype.open;
XMLHttpRequest.prototype.open = function (method, url, ...rest) {
const newUrl = injectUrl(url);
return OrigOpen.call(this, method, newUrl, ...rest);
};
}
// 拦截百度的 fetch 请求
function interceptFetch() {
const origFetch = window.fetch;
window.fetch = function (input, init) {
if (typeof input === 'string') {
input = injectUrl(input);
} else if (input instanceof Request) {
const newUrl = injectUrl(input.url);
if (newUrl !== input.url) {
input = new Request(newUrl, input);
}
}
return origFetch.call(this, input, init);
};
}
// 拦截 history.pushState / replaceState（百度结果页跳转用这个）
function interceptHistory() {
['pushState', 'replaceState'].forEach(method => {
const orig = history[method];
history[method] = function (state, title, url) {
if (url) {
url = injectUrl(url);
}
return orig.call(this, state, title, url);
};
});
}
function checkUrlOnLoad(engine) {
const isResultPage =
(engine === 'baidu' && /\/s\b/.test(location.pathname)) ||
(engine === 'google' && location.pathname === '/search') ||
(engine === 'bing' && location.pathname === '/search');
if (!isResultPage) return;
const sp = new URLSearchParams(location.search);
const param = getParamName(engine);
const raw = sp.get(param) || sp.get('word') || sp.get('kw');
if (!raw) return;
const injected = injectExclude(raw);
if (injected === raw) return;
sp.set(param, injected);
location.replace(`${location.pathname}?${sp}`);
}
function waitForElement(selector, cb, timeout = 8000) {
const el = document.querySelector(selector);
if (el) { cb(el); return; }
const obs = new MutationObserver((_, o) => {
const found = document.querySelector(selector);
if (found) { o.disconnect(); cb(found); }
});
obs.observe(document.documentElement, { childList: true, subtree: true });
setTimeout(() => obs.disconnect(), timeout);
}
function setupInputHandler(inputEl) {
if (inputEl.dataset.filterEnabled) return;
inputEl.dataset.filterEnabled = '1';
let userVal = stripExclude(inputEl.value);
inputEl.addEventListener('focus', () => {
inputEl.value = userVal;
});
inputEl.addEventListener('input', () => {
userVal = stripExclude(inputEl.value);
});
inputEl.addEventListener('blur', () => {
userVal = stripExclude(inputEl.value);
if (userVal) inputEl.value = injectExclude(userVal);
});
inputEl.addEventListener('keydown', (e) => {
if (e.key !== 'Enter') return;
userVal = stripExclude(inputEl.value);
inputEl.value = injectExclude(userVal);
});
const form = inputEl.closest('form');
if (form) {
form.addEventListener('submit', () => {
userVal = stripExclude(inputEl.value);
inputEl.value = injectExclude(userVal);
}, { capture: true });
}
['#su', '#search-form .btn', 'input[type=submit]', 'button[type=submit]'].forEach(sel => {
document.querySelectorAll(sel).forEach(btn => {
btn.addEventListener('click', () => {
userVal = stripExclude(inputEl.value);
inputEl.value = injectExclude(userVal);
}, { capture: true });
});
});
}
function watchInputRebind(selector) {
let lastEl = null;
const obs = new MutationObserver(() => {
const el = document.querySelector(selector);
if (el && el !== lastEl) {
lastEl = el;
setupInputHandler(el);
}
});
obs.observe(document.documentElement, { childList: true, subtree: true });
}
const engine = getEngine();
if (!engine) return;
// 百度专项：document-start 阶段拦截所有网络请求和历史跳转
if (engine === 'baidu') {
interceptXHR();
interceptFetch();
interceptHistory();
}
checkUrlOnLoad(engine);
const selector = getInputSelector(engine);
if (!selector) return;
function initDom() {
waitForElement(selector, setupInputHandler);
if (engine === 'baidu') {
watchInputRebind(selector);
}
}
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', initDom);
} else {
initDom();
}
})();