记录所有 console.log 即使控制台被清除也能查看
// ==UserScript==
// @name Persistent Console Logger
// @namespace http://tampermonkey.net/
// @version 1.0
// @description 记录所有 console.log 即使控制台被清除也能查看
// @author Your Name
// @match *://*/*
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
// 创建一个存储日志的数组
const logStorage = [];
// 保存原始的 console.log 和 console.clear 方法
const originalLog = console.log;
const originalClear = console.clear;
// 重写 console.log 方法
console.log = function(...args) {
// 将日志存储到 logStorage 数组
logStorage.push({
type: 'log',
args: args,
timestamp: new Date()
});
// 调用原始的 console.log 方法
originalLog.apply(console, args);
};
// 重写 console.warn 方法
console.warn = function(...args) {
logStorage.push({
type: 'warn',
args: args,
timestamp: new Date()
});
originalLog.apply(console, args);
};
// 重写 console.error 方法
console.error = function(...args) {
logStorage.push({
type: 'error',
args: args,
timestamp: new Date()
});
originalLog.apply(console, args);
};
// 重写 console.clear 方法
console.clear = function() {
// 可以选择不清除 logStorage，或根据需要清除
// 这里选择不清除，确保日志仍然被记录
// 调用原始的 console.clear 方法
originalClear.apply(console);
};
// 创建一个界面按钮来查看存储的日志
const createLogViewer = () => {
// 创建按钮
const button = document.createElement('button');
button.innerText = '查看持久化日志';
button.style.position = 'fixed';
button.style.bottom = '20px';
button.style.right = '20px';
button.style.padding = '10px 20px';
button.style.zIndex = 10000;
button.style.backgroundColor = '#4CAF50';
button.style.color = 'white';
button.style.border = 'none';
button.style.borderRadius = '5px';
button.style.cursor = 'pointer';
button.style.boxShadow = '0 4px 6px rgba(0, 0, 0, 0.1)';
button.title = '点击查看持久化的 console.log 日志';
// 创建日志查看窗口
const logWindow = document.createElement('div');
logWindow.style.position = 'fixed';
logWindow.style.top = '50px';
logWindow.style.right = '20px';
logWindow.style.width = '400px';
logWindow.style.height = '300px';
logWindow.style.backgroundColor = 'rgba(0, 0, 0, 0.8)';
logWindow.style.color = 'white';
logWindow.style.padding = '10px';
logWindow.style.borderRadius = '5px';
logWindow.style.overflowY = 'scroll';
logWindow.style.display = 'none';
logWindow.style.zIndex = 10000;
logWindow.style.fontFamily = 'monospace';
logWindow.style.fontSize = '12px';
// 创建关闭按钮
const closeButton = document.createElement('button');
closeButton.innerText = '关闭';
closeButton.style.position = 'absolute';
closeButton.style.top = '10px';
closeButton.style.right = '10px';
closeButton.style.padding = '5px 10px';
closeButton.style.backgroundColor = '#f44336';
closeButton.style.color = 'white';
closeButton.style.border = 'none';
closeButton.style.borderRadius = '3px';
closeButton.style.cursor = 'pointer';
// 添加事件监听器
button.addEventListener('click', () => {
logWindow.style.display = 'block';
renderLogs();
});
closeButton.addEventListener('click', () => {
logWindow.style.display = 'none';
});
// 添加内容到 logWindow
logWindow.appendChild(closeButton);
// 创建日志内容容器
const logContent = document.createElement('div');
logContent.style.marginTop = '40px';
logWindow.appendChild(logContent);
// 渲染日志内容
const renderLogs = () => {
logContent.innerHTML = ''; // 清空之前的内容
logStorage.forEach(entry => {
const logEntry = document.createElement('div');
logEntry.style.marginBottom = '5px';
logEntry.style.padding = '5px';
logEntry.style.borderBottom = '1px solid #555';
const time = entry.timestamp.toLocaleTimeString();
const type = entry.type.toUpperCase();
const args = entry.args.map(arg => {
if (typeof arg === 'object') {
try {
return JSON.stringify(arg);
} catch (e) {
return '[Object]';
}
}
return arg.toString();
}).join(' ');
logEntry.innerHTML = `<strong>[${time}] ${type}:</strong> ${args}`;
logContent.appendChild(logEntry);
});
};
// 自动刷新日志内容
setInterval(renderLogs, 1000);
// 将按钮和日志窗口添加到页面
document.body.appendChild(button);
document.body.appendChild(logWindow);
};
// 延迟创建界面，确保页面加载完成
window.addEventListener('load', createLogViewer);
// 可选：将日志存储到本地存储，以便刷新页面后仍能保留
const saveLogsToLocalStorage = () => {
window.addEventListener('beforeunload', () => {
localStorage.setItem('persistentLogs', JSON.stringify(logStorage));
});
// 读取本地存储的日志
const savedLogs = localStorage.getItem('persistentLogs');
if (savedLogs) {
try {
const parsedLogs = JSON.parse(savedLogs);
// 将字符串的 timestamp 转回 Date 对象
parsedLogs.forEach(log => {
if (log.timestamp) {
log.timestamp = new Date(log.timestamp);
}
});
logStorage.push(...parsedLogs);
localStorage.removeItem('persistentLogs');
} catch (e) {
console.error('Failed to parse saved logs:', e);
}
}
};
saveLogsToLocalStorage();
})();