写一个计算器网页
<!DOCTYPE html>
<html>
<head>
<title>Calculator</title>
<style>
body {
font-family: Arial, sans-serif;
}
.calculator {
width: 300px;
margin: 0 auto;
border: 1px solid #ccc;
padding: 20px;
}
.calculator input {
width: 100%;
padding: 10px;
margin-bottom: 10px;
}
.calculator button {
width: 100%;
padding: 10px;
background-color: #4CAF50;
color: white;
border: none;
cursor: pointer;
}
.calculator button:hover {
background-color: #45a049;
}
</style>
</head>
<body>
<div class="calculator">
<input type="text" id="result" readonly>
<button onclick="clearResult()">C</button>
<button onclick="deleteLastCharacter()"><</button>
<button onclick="appendCharacter('7')">7</button>
<button onclick="appendCharacter('8')">8</button>
<button onclick="appendCharacter('9')">9</button>
<button onclick="appendCharacter('/')">/</button>
<button onclick="appendCharacter('4')">4</button>
<button onclick="appendCharacter('5')">5</button>
<button onclick="appendCharacter('6')">6</button>
<button onclick="appendCharacter('*')">*</button>
<button onclick="appendCharacter('1')">1</button>
<button onclick="appendCharacter('2')">2</button>
<button onclick="appendCharacter('3')">3</button>
<button onclick="appendCharacter('-')">-</button>
<button onclick="appendCharacter('0')">0</button>
<button onclick="appendCharacter('.')">.</button>
<button onclick="calculateResult()">=</button>
<button onclick="appendCharacter('+')">+</button>
</div>
<pre><code><script>
function appendCharacter(character) {
var result = document.getElementById("result");
result.value += character;
}
function clearResult() {
var result = document.getElementById("result");
result.value = "";
}
function deleteLastCharacter() {
var result = document.getElementById("result");
result.value = result.value.slice(0, -1);
}
function calculateResult() {
var result = document.getElementById("result");
try {
result.value = eval(result.value);
} catch (error) {
result.value = "Error";
}
}
</script>
</code></pre>
</body>
</html
原文地址: http://www.cveoy.top/t/topic/hSjG 著作权归作者所有。请勿转载和采集!