新增jsq.html

2 months ago · 6715221fd9
parent cf1fa9fd13
commit 6715221fd9
1 changed files with 153 additions and 0 deletions
--- a/jsq.html
+++ b/jsq.html
@ -0,0 +1,153 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>简单计算器</title>
+    <style>
+        body {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            margin: 0;
+            font-family: Arial, sans-serif;
+            background-color: #f0f0f0;
+        }
+
+        .calculator {
+            background-color: #444;
+            padding: 20px;
+            border-radius: 10px;
+            box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
+        }
+
+        #display {
+            width: 100%;
+            height: 50px;
+            margin-bottom: 10px;
+            padding: 0px;
+            font-size: 24px;
+            text-align: right;
+            border: none;
+            background-color: #fff;
+            border-radius: 5px;
+        }
+
+        .buttons {
+            display: grid;
+            grid-template-columns: repeat(4, 1fr);
+            gap: 10px;
+        }
+
+        button {
+            padding: 20px;
+            font-size: 20px;
+            border: none;
+            border-radius: 5px;
+            background-color: #666;
+            color: white;
+            cursor: pointer;
+            transition: background-color 0.2s;
+        }
+
+        button:hover {
+            background-color: #888;
+        }
+
+        button:active {
+            background-color: #555;
+        }
+    </style>
+</head>
+<body>
+<div class="calculator">
+    <input type="text" id="display" disabled>
+    <div class="buttons">
+        <button onclick="clearDisplay()">C</button>
+        <button onclick="appendNumber('7')">7</button>
+        <button onclick="appendNumber('8')">8</button>
+        <button onclick="appendNumber('9')">9</button>
+        <button onclick="chooseOperation('/')">/</button>
+        <button onclick="appendNumber('4')">4</button>
+        <button onclick="appendNumber('5')">5</button>
+        <button onclick="appendNumber('6')">6</button>
+        <button onclick="chooseOperation('*')">*</button>
+        <button onclick="appendNumber('1')">1</button>
+        <button onclick="appendNumber('2')">2</button>
+        <button onclick="appendNumber('3')">3</button>
+        <button onclick="chooseOperation('-')">-</button>
+        <button onclick="appendNumber('0')">0</button>
+        <button onclick="appendNumber('.')">.</button>
+        <button onclick="compute()">=</button>
+        <button onclick="chooseOperation('+')">+</button>
+        <button onclick="chooseOperation('%')">%</button>
+    </div>
+</div>
+
+<script>
+    let currentOperand = '';
+    let previousOperand = '';
+    let operation = undefined;
+
+    const display = document.getElementById('display');
+
+    function appendNumber(number) {
+        if (number === '.' && currentOperand.includes('.')) return;
+        currentOperand += number;
+        updateDisplay();
+    }
+
+    function chooseOperation(op) {
+        if (currentOperand === '') return;
+        if (previousOperand !== '') {
+            compute();
+        }
+        operation = op;
+        previousOperand = currentOperand;
+        currentOperand = '';
+    }
+
+    function compute() {
+        let computation;
+        const prev = parseFloat(previousOperand);
+        const current = parseFloat(currentOperand);
+        if (isNaN(prev) || isNaN(current)) return;
+        switch (operation) {
+            case '+':
+                computation = prev + current;
+                break;
+            case '-':
+                computation = prev - current;
+                break;
+            case '*':
+                computation = prev * current;
+                break;
+            case '/':
+                computation = prev / current;
+                break;
+            case '%':
+                computation = prev % current;
+                break;
+            default:
+                return;
+        }
+        currentOperand = computation.toString();
+        operation = undefined;
+        previousOperand = '';
+        updateDisplay();
+    }
+
+    function clearDisplay() {
+        currentOperand = '';
+        previousOperand = '';
+        operation = undefined;
+        updateDisplay();
+    }
+
+    function updateDisplay() {
+        display.value = currentOperand;
+    }
+</script>
+</body>
+</html>