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Subproject commit 527e31cb201211a13bbfff099a806d1f558fd742
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<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>简单计算器</title>
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<style>
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body {
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display: flex;
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justify-content: center;
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align-items: center;
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height: 100vh;
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margin: 0;
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font-family: Arial, sans-serif;
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background-color: #f0f0f0;
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}
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.calculator {
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background-color: #444;
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padding: 20px;
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border-radius: 10px;
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box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
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}
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#display {
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width: 100%;
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height: 50px;
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margin-bottom: 10px;
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padding: 0px;
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font-size: 24px;
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text-align: right;
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border: none;
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background-color: #fff;
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border-radius: 5px;
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}
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.buttons {
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display: grid;
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grid-template-columns: repeat(4, 1fr);
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gap: 10px;
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}
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button {
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padding: 20px;
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font-size: 20px;
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border: none;
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border-radius: 5px;
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background-color: #666;
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color: white;
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cursor: pointer;
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transition: background-color 0.2s;
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}
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button:hover {
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background-color: #888;
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}
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button:active {
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background-color: #555;
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}
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</style>
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</head>
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<body>
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<div class="calculator">
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<input type="text" id="display" disabled>
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<div class="buttons">
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<button onclick="clearDisplay()">C</button>
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<button onclick="appendNumber('7')">7</button>
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<button onclick="appendNumber('8')">8</button>
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<button onclick="appendNumber('9')">9</button>
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<button onclick="chooseOperation('/')">/</button>
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<button onclick="appendNumber('4')">4</button>
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<button onclick="appendNumber('5')">5</button>
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<button onclick="appendNumber('6')">6</button>
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<button onclick="chooseOperation('*')">*</button>
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<button onclick="appendNumber('1')">1</button>
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<button onclick="appendNumber('2')">2</button>
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<button onclick="appendNumber('3')">3</button>
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<button onclick="chooseOperation('-')">-</button>
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<button onclick="appendNumber('0')">0</button>
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<button onclick="appendNumber('.')">.</button>
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<button onclick="compute()">=</button>
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<button onclick="chooseOperation('+')">+</button>
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<button onclick="chooseOperation('%')">%</button>
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</div>
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</div>
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<script>
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let currentOperand = '';
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let previousOperand = '';
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let operation = undefined;
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const display = document.getElementById('display');
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function appendNumber(number) {
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if (number === '.' && currentOperand.includes('.')) return;
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currentOperand += number;
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updateDisplay();
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}
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function chooseOperation(op) {
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if (currentOperand === '') return;
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if (previousOperand !== '') {
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compute();
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}
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operation = op;
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previousOperand = currentOperand;
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currentOperand = '';
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}
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function compute() {
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let computation;
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const prev = parseFloat(previousOperand);
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const current = parseFloat(currentOperand);
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if (isNaN(prev) || isNaN(current)) return;
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switch (operation) {
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case '+':
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computation = prev + current;
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break;
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case '-':
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computation = prev - current;
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break;
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case '*':
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computation = prev * current;
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break;
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case '/':
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computation = prev / current;
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break;
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case '%':
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computation = prev % current;
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break;
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default:
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return;
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}
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currentOperand = computation.toString();
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operation = undefined;
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previousOperand = '';
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updateDisplay();
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}
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function clearDisplay() {
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currentOperand = '';
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previousOperand = '';
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operation = undefined;
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updateDisplay();
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}
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function updateDisplay() {
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display.value = currentOperand;
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}
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</script>
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</body>
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</html>
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@ -0,0 +1 @@
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gHello World ni hao shi jie hi
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@ -0,0 +1,2 @@
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333333
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33333333
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