就是这个样的粗爆，手搓一个计算器：还款计算器

线上运行，可以直接打开：还款计算器(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=”loanAmount”>贷款金额 (元)：</label> <input id=”loanAmount” type=”number” placeholder=”输入贷款金额”> <label for=”interestRate”>年利率 (%)：</label> <input id=”interestRate” type=”number” placeholder=”输入年利率”> <label for=”loanTerm”>贷款年限 (年)：</label> <input id=”loanTerm” type=”number” placeholder=”输入贷款年限”><button onclick=”calculateRepayment()”>计算还款额</button><div id=”result” class=”result”>结果将显示在这里</div></div>

JS:

function calculateRepayment() {
const loanAmount = parseFloat(document.getElementById(‘loanAmount’).value);
const interestRate = parseFloat(document.getElementById(‘interestRate’).value) / 100 / 12; // 将年利率转换为月利率
const loanTerm = parseInt(document.getElementById(‘loanTerm’).value) * 12; // 将贷款年限转换为月数

if (isNaN(loanAmount) || isNaN(interestRate) || isNaN(loanTerm)) {
document.getElementById(‘result’).textContent = “请输入有效的贷款金额、利率和年限。”;
return;
}

// 等额本息还款公式：每月还款额 = [贷款金额 × 月利率 × (1 + 月利率)^还款月数] / [(1 + 月利率)^还款月数 – 1]
const monthlyRepayment = (loanAmount * interestRate * Math.pow(1 + interestRate, loanTerm)) / (Math.pow(1 + interestRate, loanTerm) – 1);
const totalRepayment = monthlyRepayment * loanTerm;

document.getElementById(‘result’).innerHTML =
`每月还款额：${monthlyRepayment.toFixed(2)} 元<br>` +
`总还款额：${totalRepayment.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;
}