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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Todo App - 修复验证</title>
<style>
body {
font-family: Arial, sans-serif;
max-width: 800px;
margin: 0 auto;
padding: 20px;
background-color: #f5f5f5;
}
.container {
background: white;
padding: 20px;
border-radius: 8px;
box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.test-section {
margin-bottom: 30px;
padding: 15px;
border: 1px solid #ddd;
border-radius: 5px;
}
h3 {
margin-top: 0;
color: #333;
}
.status {
padding: 5px 10px;
border-radius: 3px;
margin: 5px 0;
}
.success {
background-color: #d4edda;
color: #155724;
border: 1px solid #c3e6cb;
}
.error {
background-color: #f8d7da;
color: #721c24;
border: 1px solid #f5c6cb;
}
button {
padding: 8px 15px;
margin: 5px;
cursor: pointer;
}
input, select {
padding: 8px;
margin: 5px;
border: 1px solid #ccc;
border-radius: 4px;
}
</style>
</head>
<body>
<div class="container">
<h1>Todo App - 修复验证页面</h1>
<div class="test-section">
<h3>JavaScript 错误检测</h3>
<div id="js-status" class="status">页面已加载,等待检查...</div>
<button onclick="checkVariables()">检查全局变量</button>
<button onclick="testFunctionCalls()">测试函数调用</button>
</div>
<div class="test-section">
<h3>变量状态</h3>
<pre id="variables-output">点击上面的按钮来检查变量状态</pre>
</div>
<div class="test-section">
<h3>说明</h3>
<p>此页面用于验证修复后的Todo应用是否解决了以下问题:</p>
<ul>
<li>变量重复声明错误</li>
<li>currentUser未定义错误</li>
<li>函数作用域问题</li>
<li>全局变量引用问题</li>
</ul>
<p>如果下面的检查都显示成功,则修复已生效。</p>
</div>
</div>
<!-- Firebase SDK -->
<script src="https://www.gstatic.com/firebasejs/9.0.0/firebase-app-compat.js"></script>
<script src="https://www.gstatic.com/firebasejs/9.0.0/firebase-auth-compat.js"></script>
<script src="https://www.gstatic.com/firebasejs/9.0.0/firebase-firestore-compat.js"></script>
<script>
// 输出到页面的函数
function logToPage(message, isError = false) {
const statusDiv = document.getElementById('js-status');
statusDiv.textContent = message;
statusDiv.className = 'status ' + (isError ? 'error' : 'success');
}
// 检查全局变量
function checkVariables() {
try {
const vars = {
'window.todos': typeof window.todos !== 'undefined' ? '存在' : '不存在',
'window.currentUser': typeof window.currentUser !== 'undefined' ? '存在' : '不存在',
'window.currentFilter': typeof window.currentFilter !== 'undefined' ? '存在' : '不存在',
'window.currentView': typeof window.currentView !== 'undefined' ? '存在' : '不存在',
'window.editingId': typeof window.editingId !== 'undefined' ? '存在' : '不存在',
'window.filters': typeof window.filters !== 'undefined' ? '存在' : '不存在',
'window.authSection': typeof window.authSection !== 'undefined' ? '存在' : '不存在',
'window.todoApp': typeof window.todoApp !== 'undefined' ? '存在' : '不存在',
'window.userInfo': typeof window.userInfo !== 'undefined' ? '存在' : '不存在',
'window.loginForm': typeof window.loginForm !== 'undefined' ? '存在' : '不存在',
'window.registerForm': typeof window.registerForm !== 'undefined' ? '存在' : '不存在',
'window.todoList': typeof window.todoList !== 'undefined' ? '存在' : '不存在',
'window.loadingIndicator': typeof window.loadingIndicator !== 'undefined' ? '存在' : '不存在'
};
let output = "全局变量状态:\n";
for (const [key, value] of Object.entries(vars)) {
output += `${key}: ${value}\n`;
}
document.getElementById('variables-output').textContent = output;
// 检查是否有任何关键变量缺失
const missingVars = Object.entries(vars).filter(([key, value]) => value === '不存在').map(([key]) => key);
if (missingVars.length === 0) {
logToPage('✅ 所有关键全局变量都已正确定义', false);
} else {
logToPage('❌ 缺少以下全局变量: ' + missingVars.join(', '), true);
}
} catch (error) {
logToPage('❌ 检查变量时出错: ' + error.message, true);
}
}
// 测试函数调用
function testFunctionCalls() {
try {
// 检查必要的函数是否存在
const functionsToTest = [
'setupAuthHandlers',
'loadUserTodos',
'addTodo',
'updateTodo',
'deleteTodo',
'toggleComplete',
'renderTodos',
'editTodo',
'initializeUserTodos',
'showApp',
'logout'
];
let output = "函数可用性测试:\n";
let allFunctionsExist = true;
for (const funcName of functionsToTest) {
const exists = typeof window[funcName] !== 'undefined';
output += `${funcName}: ${exists ? '存在' : '不存在'}\n`;
if (!exists) allFunctionsExist = false;
}
document.getElementById('variables-output').textContent = output;
if (allFunctionsExist) {
logToPage('✅ 所有关键函数都已正确定义', false);
} else {
logToPage('❌ 存在未定义的关键函数', true);
}
} catch (error) {
logToPage('❌ 测试函数时出错: ' + error.message, true);
}
}
// 页面加载时的初步检查
window.onload = function() {
logToPage('✅ 页面已成功加载,没有JavaScript错误');
};
// 监听全局错误
window.onerror = function(message, source, lineno, colno, error) {
logToPage('❌ JavaScript错误: ' + message, true);
return true;
};
</script>
</body>
</html>