3 changed files with 88 additions and 76 deletions
--- a/README.md
+++ b/README.md
@ -0,0 +1,2 @@
+# jisuanqi
+
--- a/Test.java
+++ b/Test.java
@ -0,0 +1,4 @@
+public class Test {
+
+
+}
--- a/jsq.html
+++ b/jsq.html
@ -26,7 +26,7 @@
            width: 100%;
            height: 50px;
            margin-bottom: 10px;
-            padding: 10px;
+            padding: 0px;
            font-size: 24px;
            text-align: right;
            border: none;
@ -61,89 +61,95 @@
    </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>
-        </div>
+<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>
+        <button onclick="appendNumber('-')">±</button>
    </div>
+</div>

-    <script>
-        let currentOperand = '';
-        let previousOperand = '';
-        let operation = undefined;
+<script>
+    let currentOperand = '';
+    let previousOperand = '';
+    let operation = undefined;

-        const display = document.getElementById('display');
+    const display = document.getElementById('display');

-        function appendNumber(number) {
-            if (number === '.' && currentOperand.includes('.')) return;
-            currentOperand += number;
-            updateDisplay();
-        }
+    function appendNumber(number) {
+        if (number === '.' && currentOperand.includes('.')) return;
+        if (number === '-' && currentOperand.length > 0) return; // 防止在数字中间添加负号
+        currentOperand += number;
+        updateDisplay();
+    }

-        function chooseOperation(op) {
-            if (currentOperand === '') return;
-            if (previousOperand !== '') {
-                compute();
-            }
-            operation = op;
-            previousOperand = currentOperand;
-            currentOperand = '';
+    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;
-                default:
-                    return;
-            }
-            currentOperand = computation.toString();
-            operation = undefined;
-            previousOperand = '';
-            updateDisplay();
+    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 clearDisplay() {
+        currentOperand = '';
+        previousOperand = '';
+        operation = undefined;
+        updateDisplay();
+    }

-        function updateDisplay() {
-            display.value = currentOperand;
-        }
-    </script>
+    function updateDisplay() {
+        display.value = currentOperand;
+    }
+</script>
 </body>
 </html>