110 lines
3.3 KiB
HTML
110 lines
3.3 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>Calculator</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: #f2f2f2;
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font-family: Arial, sans-serif;
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}
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#calculator {
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border: 1px solid #333;
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padding: 30px;
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border-radius: 10px;
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width: 400px;
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background-color: #fff;
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box-shadow: 0px 0px 10px rgba(0,0,0,0.1);
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box-sizing: border-box;
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display: flex;
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flex-direction: column;
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align-items: flex-end;
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}
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#calculator h1 {
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text-align: center;
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margin-bottom: 20px;
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align-self: center;
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}
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#calculator p {
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text-align: center;
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margin-bottom: 20px;
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color: #666;
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align-self: center;
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}
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#inputExpression {
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width: 100%;
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padding: 15px;
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font-size: 18px;
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border-radius: 5px;
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border: 1px solid #ddd;
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box-sizing: border-box;
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margin-bottom: 10px;
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}
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#result {
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margin-top: 20px;
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font-size: 20px;
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text-align: center;
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color: #333;
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width: 100%;
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align-self: center;
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}
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button {
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padding: 10px 20px;
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margin-top: 10px;
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font-size: 18px;
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border: none;
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border-radius: 5px;
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cursor: pointer;
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align-self: flex-end;
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}
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#calculate {
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background-color: #4CAF50;
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color: white;
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}
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#clear {
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background-color: #f44336;
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color: white;
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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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<h1>Calculator</h1>
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<p>Enter the expression and get the results</p>
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<input type="text" id="inputExpression" placeholder="Enter expression" />
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<button id="calculate">=</button>
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<button id="clear">Clear</button>
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<div id="result">Result: <span id="calculationResult"></span></div>
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</div>
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<script>
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document.getElementById('calculate').addEventListener('click', function() {
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try {
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const result = eval(document.getElementById('inputExpression').value);
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if (!isNaN(result)) {
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document.getElementById('calculationResult').textContent = result;
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} else {
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document.getElementById('calculationResult').textContent = 'Invalid expression';
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}
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} catch {
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document.getElementById('calculationResult').textContent = 'Invalid expression';
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}
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});
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document.getElementById('clear').addEventListener('click', function() {
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document.getElementById('inputExpression').value = '';
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document.getElementById('calculationResult').textContent = '';
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});
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document.getElementById('inputExpression').addEventListener('keypress', function(e) {
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if (e.key === 'Enter') {
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document.getElementById('calculate').click();
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}
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});
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</script>
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</body>
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</html>
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