HTML-CSS-Javascript 單一網頁計算器
<!DOCTYPE html>
<html lang="zh-TW">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>單一網頁計算器</title>
<style>
* {
box-sizing: border-box;
margin: 0;
padding: 0;
font-family: Arial, sans-serif;
}
body {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
background-color: #f0f2f5;
}
.calculator {
background-color: #333;
padding: 20px;
border-radius: 10px;
box-shadow: 0px 4px 10px rgba(0,0,0,0.3);
width: 320px;
}
#display {
width: 100%;
height: 60px;
background-color: #222;
color: #fff;
font-size: 28px;
text-align: right;
padding: 10px;
border: none;
border-radius: 5px;
margin-bottom: 15px;
outline: none;
overflow: hidden;
}
.buttons {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 10px;
}
button {
padding: 20px;
font-size: 18px;
font-weight: bold;
cursor: pointer;
border: none;
border-radius: 5px;
background-color: #e0e0e0;
transition: 0.2s;
}
button:hover {
background-color: #d4d4d4;
}
button.operator {
background-color: #ff9500;
color: white;
}
button.operator:hover {
background-color: #e08500;
}
button.clear {
background-color: #ff3b30;
color: white;
}
button.clear:hover {
background-color: #d32f2f;
}
button.equal {
grid-column: span 2;
background-color: #34c759;
color: white;
}
button.equal:hover {
background-color: #2ebd4a;
}
</style>
</head>
<body>
<div class="calculator">
<input type="text" id="display" readonly>
<div class="buttons">
<button class="clear" onclick="clearDisplay()">C</button>
<button onclick="appendValue('/')" class="operator">/</button>
<button onclick="appendValue('*')" class="operator">*</button>
<button onclick="appendValue('-')" class="operator">-</button>
<button onclick="appendValue('7')">7</button>
<button onclick="appendValue('8')">8</button>
<button onclick="appendValue('9')">9</button>
<button onclick="appendValue('+')" class="operator">+</button>
<button onclick="appendValue('4')">4</button>
<button onclick="appendValue('5')">5</button>
<button onclick="appendValue('6')">6</button>
<button class="equal" onclick="calculate()">=</button>
<button onclick="appendValue('1')">1</button>
<button onclick="appendValue('2')">2</button>
<button onclick="appendValue('3')">3</button>
<button onclick="appendValue('0')">0</button>
<button onclick="appendValue('.')">.</button>
<button onclick="deleteLast()" class="operator">退格</button>
</div>
</div>
<script>
const display = document.getElementById('display');
function appendValue(val) {
display.value += val;
}
function clearDisplay() {
display.value = '';
}
function deleteLast() {
display.value = display.value.slice(0, -1);
}
function calculate() {
try {
// 使用 Function 執行簡單的字串數學運算，比 eval 安全
display.value = new Function('return ' + display.value)();
} catch (error) {
display.value = '錯誤';
setTimeout(clearDisplay, 1500);
}
}
</script>
</body>
</html>
622計算機.https://kkshou.blogspot.com/2026/06/blog-post_23.html
回覆刪除concatenate.https://kkshou.blogspot.com/2026/06/excelconcatenate.html
撰寫模式貼上就不能使用，留下來，可以讓自己謹記！很好！https://kkshou.blogspot.com/2026/06/html-css-javascript.html