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<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>
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<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1let 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>
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