作为程序员,没有合适的工具,就得手搓一个,PC端,移动端均可适用。废话不多说,直接上代码。
HTML:
<div class="calculator"><label for="density">密度 (kg/m³):</label> <input id="density" type="number" placeholder="输入物体的密度"> <label for="volume">体积 (m³):</label> <input id="volume" type="number" placeholder="输入物体的体积"><button onclick="calculateMass()">计算质量</button><div id="result" class="result">结果将在此显示</div></div>
JS:
function calculateMass() {
const density = parseFloat(document.getElementById('density').value);
const volume = parseFloat(document.getElementById('volume').value);
if (isNaN(density) || isNaN(volume) || density <= 0 || volume <= 0) {
document.getElementById('result').innerText = "请输入有效的数值。";
return;
}
// 计算质量 m = ρ * V
const mass = density * volume;
document.getElementById('result').innerText = `质量: ${mass.toFixed(2)} kg`;
}
CSS:
.calculator {
width: 100%;
background-color: #333;
color: white;
padding: 20px;
border-radius: 10px;
box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}
label {
display: block;
margin-bottom: 10px;
font-size: 16px;
}
input, select {
width: 100%!important;
padding: 10px!important;
margin-bottom: 20px;
color: #000000;
border-radius: 5px;
border: 1px solid #555;
font-size: 16px!important;
background-color: #ffffff!important;
}
button {
width: 100%;
padding: 10px;
background-color: #007bff;
color: white;
border: none;
border-radius: 5px;
cursor: pointer;
font-size: 16px;
}
button:hover {
background-color: orange;
}
.result {
font-size: 18px;
margin-top: 20px;
text-align: center;
}
option {
background-color: #ffffff;
}
p {
font-size: 18px;
margin-top: 5px!important;
}