以下代码为油猴脚本，需要先在浏览器中安装油猴插件
https://www.tampermonkey.net/
然后点击新建脚本复制粘贴以下代码即可

// ==UserScript==
// @name         CP51100
// @namespace    http://nopj.cn
// @version      2025-05-27
// @description  解除51100复制粘贴限制
// @author       Chaos
// @match        https://scdxskgkh5.51100.net/
// @icon         https://www.google.com/s2/favicons?sz=64&domain=51100.net
// @grant        none
// ==/UserScript==

(function() {
    'use strict';


    document.addEventListener('copy', function(e) {
        e.stopImmediatePropagation(); 
    }, true); 
    document.addEventListener('cut', function(e) {
        e.stopImmediatePropagation();
    }, true); 
    document.addEventListener('paste', function(e) {
        e.stopImmediatePropagation();
    }, true); 

   
    const observer = new MutationObserver((mutationsList, observer) => {
        for (const mutation of mutationsList) {
            if (mutation.type === 'childList' && mutation.addedNodes.length > 0) {
                mutation.addedNodes.forEach(node => {
                    if (node.nodeType === 1) { 
                        node.querySelectorAll('*').forEach(el => {
                            el.oncopy = null;
                            el.oncut = null;
                            el.onpaste = null;
                        });
                        if (node.oncopy) node.oncopy = null;
                        if (node.oncut) node.oncut = null;
                        if (node.onpaste) node.onpaste = null;
                    }
                });
            }
        }
    });

   
    observer.observe(document.body, { childList: true, subtree: true });

    window.addEventListener('DOMContentLoaded', () => {
       
        const events = ['copy', 'cut', 'paste'];
        events.forEach(event => {
            const originalAddEventListener = EventTarget.prototype.addEventListener;
            EventTarget.prototype.addEventListener = function(type, listener, options) {
                if (type === event) {
                    console.log(`Tampermonkey: Preventing '${type}' event listener from being added.`);
                    return;
                }
                originalAddEventListener.call(this, type, listener, options);
            };

            const originalRemoveEventListener = EventTarget.prototype.removeEventListener;
            EventTarget.prototype.removeEventListener = function(type, listener, options) {
                if (type === event) {
                    console.log(`Tampermonkey: Attempting to remove '${type}' event listener.`);
                }
                originalRemoveEventListener.call(this, type, listener, options);
            };

            document.removeEventListener(event, preventDefaultHandler, true); 
            document.removeEventListener(event, preventDefaultHandler, false); 
            document.addEventListener(event, function(e) {
                e.stopImmediatePropagation();
            }, true); 
        });


        Object.defineProperty(HTMLInputElement.prototype, 'onpaste', {
            get: function() { return function() {}; },
            set: function() {}
        });
        Object.defineProperty(HTMLTextAreaElement.prototype, 'onpaste', {
            get: function() { return function() {}; },
            set: function() {}
        });
        Object.defineProperty(HTMLElement.prototype, 'oncopy', {
            get: function() { return function() {}; },
            set: function() {}
        });
        Object.defineProperty(HTMLElement.prototype, 'oncut', {
            get: function() { return function() {}; },
            set: function() {}
        });
        Object.defineProperty(HTMLElement.prototype, 'onpaste', {
            get: function() { return function() {}; },
            set: function() {}
        });


        document.addEventListener('copy', (e) => { e.stopImmediatePropagation(); }, true);
        document.addEventListener('cut', (e) => { e.stopImmediatePropagation(); }, true);
        document.addEventListener('paste', (e) => { e.stopImmediatePropagation(); }, true);
        document.body.addEventListener('copy', (e) => { e.stopImmediatePropagation(); }, true);
        document.body.addEventListener('cut', (e) => { e.stopImmediatePropagation(); }, true);
        document.body.addEventListener('paste', (e) => { e.stopImmediatePropagation(); }, true);

        
        Promise.resolve().then(() => {
            document.querySelectorAll('*').forEach(el => {
                ['copy', 'cut', 'paste'].forEach(event => {
                    const handlers = Array.from(getEventListeners(el, event)); 
                    handlers.forEach(handler => el.removeEventListener(event, handler.listener, handler.capture));
                });
            });
        });
    });



    function getEventListeners(element, type) {

        if (typeof window.getEventListeners === 'function') {
            return window.getEventListeners(element, type);
        } else {
            console.warn("getEventListeners is not available. Cannot enumerate event listeners directly.");
            return [];
        }
    }


})();