<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<title>记账本改写</title>
<style>
table {
user-select: none;
/* width: 100%; */
border-collapse: collapse;
}
table,
th,
td {
border: 1px solid black;
}
th,
td {
padding: 8px;
text-align: center;
}
</style>
</head>
<body>
<table id="ledgerTable">
<thead>
<tr>
<th style="width: 50px;"><input type="month" id="monthPicker"></th>
<th colspan="3">日常开销</th>
</tr>
<tr>
<th>日期</th>
<th>项目</th>
<th>支出</th>
<th>收入</th>
</tr>
</thead>
<tbody>
</tbody>
<tfoot>
<tr>
<td><strong>总和</strong></td>
<td id="totalAmount">0</td>
<td id="totalExpense">0</td>
<td id="totalIncome">0</td>
</tr>
</tfoot>
</table>
<script>
let currentYear, currentMonth;
document.getElementById('monthPicker').addEventListener('change', function () {
let selectedDate = new Date(this.value);
currentYear = selectedDate.getFullYear();
currentMonth = selectedDate.getMonth() + 1; // 月份从0开始，需要加1
let daysInMonth = new Date(currentYear, currentMonth, 0).getDate();
let tbody = document.querySelector('#ledgerTable tbody');
// 清空tbody中的所有行
tbody.innerHTML = '';
// 为每一天添加行
for (let day = 1; day <= daysInMonth; day++) {
let newRow = document.createElement('tr');
newRow.innerHTML = `
<td>${day}</td>
<td>
<button class="add-item">+</button>
</td>
<td>0</td>
<td>0</td>
`;
newRow.querySelector('.add-item').addEventListener('click', addItemHandler);
tbody.appendChild(newRow);
}
// 从localStorage加载数据
loadData();
// 初始化总和
updateTotals();
});
// 添加项目的事件处理函数
function addItemHandler() {
const newItem = createItemElement({ name: '', expense: '', income: '' });
this.parentNode.insertBefore(newItem, this);
updateDailyTotals(this.closest('tr'));
updateTotals(); // 更新总和
saveData(); // 保存数据
}
// 创建项目元素的函数
function createItemElement(item) {
const newItem = document.createElement('div');
newItem.innerHTML = `
<input type="text" placeholder="项目" value="${item.name}">
<select class="type-select">
<option value="expense">支出</option>
<option value="income">收入</option>
</select>
<input type="number" placeholder="金额" style="width: 70px;" value="${item.expense || item.income || ''}">
<button class="remove-item">-</button>
`;
// 获取金额输入框和类型选择框
const amountInput = newItem.querySelector('input[type="number"]');
const typeSelect = newItem.querySelector('.type-select');
// 添加事件监听器
addEventListeners(amountInput, typeSelect, newItem);
// 给“-”按钮添加事件监听
newItem.querySelector('.remove-item').addEventListener('click', function () {
const row = this.closest('tr');
// 弹出确认对话框
const confirmDelete = confirm("确定要删除此项目吗？");
if (confirmDelete) {
this.parentNode.remove();
updateDailyTotals(row);
updateTotals(); // 更新总和
saveData(); // 保存数据
}
});
return newItem;
}
// 添加事件监听器的函数
function addEventListeners(amountInput, typeSelect, newItem) {
// 监听金额输入框的变化
amountInput.addEventListener('input', function () {
if (typeSelect.value === 'expense' && this.value > 0) {
this.value = -this.value; // 如果选择“支出”且金额为正数，自动转换为负数
}
updateDailyTotals(newItem.closest('tr')); // 更新每日总和
updateTotals(); // 更新总和
saveData(); // 保存数据
});
// 监听类型选择框的变化
typeSelect.addEventListener('change', function () {
if (this.value === 'expense') {
// 如果选择“支出”，确保金额为负数
if (amountInput.value > 0) {
amountInput.value = -amountInput.value;
}
amountInput.min = '-999999';
amountInput.max = '0';
} else if (this.value === 'income') {
// 如果选择“收入”，确保金额为正数
if (amountInput.value < 0) {
amountInput.value = -amountInput.value;
}
amountInput.min = '0';
amountInput.max = '999999';
}
updateDailyTotals(newItem.closest('tr')); // 更新每日总和
updateTotals(); // 更新总和
saveData(); // 保存数据
});
}
// 更新每日总和的函数
function updateDailyTotals(row) {
const items = row.querySelectorAll('div');
let expenseTotal = 0;
let incomeTotal = 0;
items.forEach(item => {
const amountInput = item.querySelector('input[type="number"]');
const amount = parseFloat(amountInput.value) || 0;
if (amount < 0) {
expenseTotal += amount;
} else {
incomeTotal += amount;
}
});
row.querySelectorAll('td')[2].textContent = expenseTotal;
row.querySelectorAll('td')[3].textContent = incomeTotal;
}
// 更新总和的函数
function updateTotals() {
const rows = document.querySelectorAll('#ledgerTable tbody tr');
let totalExpense = 0;
let totalIncome = 0;
rows.forEach(row => {
const expenseCell = row.querySelectorAll('td')[2];
const incomeCell = row.querySelectorAll('td')[3];
totalExpense += parseFloat(expenseCell.textContent) || 0;
totalIncome += parseFloat(incomeCell.textContent) || 0;
});
document.getElementById('totalExpense').textContent = totalExpense;
document.getElementById('totalIncome').textContent = totalIncome;
document.getElementById('totalAmount').textContent = totalIncome + totalExpense;
}
// 保存数据的函数
function saveData() {
if (!currentYear || !currentMonth) return;
const key = `ledger_${currentYear}_${currentMonth}`;
const data = [];
const rows = document.querySelectorAll('#ledgerTable tbody tr');
rows.forEach(row => {
const day = row.querySelector('td').textContent;
const items = row.querySelectorAll('div');
items.forEach(item => {
const name = item.querySelector('input[type="text"]').value;
const type = item.querySelector('.type-select').value;
const amount = item.querySelector('input[type="number"]').value;
data.push({ day, name, type, amount });
});
});
localStorage.setItem(key, JSON.stringify(data));
}
// 加载数据的函数
function loadData() {
if (!currentYear || !currentMonth) return;
const key = `ledger_${currentYear}_${currentMonth}`;
const data = JSON.parse(localStorage.getItem(key)) || [];
const rows = document.querySelectorAll('#ledgerTable tbody tr');
data.forEach(item => {
const row = Array.from(rows).find(row => row.querySelector('td').textContent === item.day);
if (row) {
const newItem = createItemElement({ name: item.name, expense: item.type === 'expense' ? item.amount : '', income: item.type === 'income' ? item.amount : '' });
row.querySelector('td:nth-child(2)').insertBefore(newItem, row.querySelector('.add-item'));
}
});
rows.forEach(row => updateDailyTotals(row));
updateTotals();
}
</script>
</body>
</html>
