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99 lines
3.1 KiB
99 lines
3.1 KiB
<!DOCTYPE html>
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<html lang="en">
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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>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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background-color: #f0f0f0;
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}
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#calculator {
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border: 1px solid #ccc;
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border-radius: 10px;
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padding: 20px;
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background-color: #fff;
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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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font-size: 1.5em;
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text-align: right;
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padding: 10px;
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box-sizing: border-box;
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}
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.button {
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width: 23%;
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padding: 15px;
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margin: 1%;
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font-size: 1.2em;
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cursor: pointer;
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border: none;
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border-radius: 5px;
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background-color: #ddd;
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}
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.button:hover {
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background-color: #ccc;
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}
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</style>
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</head>
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<body>
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<div id="calculator">
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<input type="text" id="display" disabled>
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<div>
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<button class="button" onclick="clearDisplay()">C</button>
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<button class="button" onclick="appendToDisplay('%')">%</button>
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<button class="button" onclick="appendToDisplay('/')">/</button>
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<button class="button" onclick="appendToDisplay('*')">*</button>
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</div>
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<div>
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<button class="button" onclick="appendToDisplay('7')">7</button>
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<button class="button" onclick="appendToDisplay('8')">8</button>
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<button class="button" onclick="appendToDisplay('9')">9</button>
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<button class="button" onclick="appendToDisplay('-')">-</button>
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</div>
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<div>
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<button class="button" onclick="appendToDisplay('4')">4</button>
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<button class="button" onclick="appendToDisplay('5')">5</button>
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<button class="button" onclick="appendToDisplay('6')">6</button>
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<button class="button" onclick="appendToDisplay('+')">+</button>
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</div>
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<div>
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<button class="button" onclick="appendToDisplay('1')">1</button>
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<button class="button" onclick="appendToDisplay('2')">2</button>
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<button class="button" onclick="appendToDisplay('3')">3</button>
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<button class="button" onclick="calculateResult()">=</button>
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</div>
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<div>
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<button class="button" onclick="appendToDisplay('0')">0</button>
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<button class="button" onclick="appendToDisplay('.')">.</button>
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</div>
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</div>
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<script>
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function appendToDisplay(value) {
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document.getElementById('display').value += value;
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}
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function clearDisplay() {
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document.getElementById('display').value = '';
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}
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function calculateResult() {
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try {
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let result = eval(document.getElementById('display').value);
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document.getElementById('display').value = result;
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} catch (e) {
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document.getElementById('display').value = '错误';
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}
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}
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</script>
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</body>
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</html> |