就是这个样的粗爆，手搓一个计算器：利息计算器

线上运行，可以直接打开：利息计算器(在线计算器)

       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="principal">本金 (元)：</label> <input id="principal" step="any" type="number" placeholder="输入本金"> <label for="rate">年利率 (%)：</label> <input id="rate" step="any" type="number" placeholder="输入年利率"> <label for="years">投资年限 (年)：</label> <input id="years" step="any" type="number" placeholder="输入投资年限"><button onclick="calculateInterest()">计算利息</button><div id="result" class="result">结果将显示在这里</div></div>

JS:

function calculateInterest() { const principal = parseFloat(document.getElementById('principal').value); const rate = parseFloat(document.getElementById('rate').value) / 100; const years = parseFloat(document.getElementById('years').value); if (isNaN(principal) || isNaN(rate) || isNaN(years) || principal <= 0 || rate < 0 || years <= 0) { document.getElementById('result').textContent = "请输入有效的本金、利率和年限。"; return; } // 计算简单利息 const simpleInterest = principal * rate * years; // 计算复利 const compoundInterest = principal * Math.pow((1 + rate), years) - principal; document.getElementById('result').innerHTML = ` 简单利息：${simpleInterest.toFixed(2)} 元<br> 复利：${compoundInterest.toFixed(2)} 元 `; }

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; }