【工具】前端js数字金额转中文大写金额
代码
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>金额转大写</title>
<style>
input {
margin: 5px;
padding: 10px;
font-size: 16px;
}
</style>
</head>
<body>
<h1>金额转大写</h1>
<label for="amount">输入金额（整数或小数）：</label>
<input type="text" id="amount" placeholder="请输入金额" oninput="convertToChinese()" />
<br />
<label for="amountInWords">大写金额：</label>
<input type="text" id="amountInWords" readonly />
<script>
function convertToChinese() {
const amountInput = document.getElementById('amount');
const amountInWords = document.getElementById('amountInWords');
const amount = parseFloat(amountInput.value);
if (!isNaN(amount)) {
amountInWords.value = toChinaNum(amount);
} else {
amountInWords.value = '';
}
}
function toChinaNum(number) {
if (isNaN(number) || !isFinite(number)) {
throw new Error('传值错误');
}
const fraction = ['角', '分'];
const digit = ['零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖'];
const unit = [
['元', '万', '亿'],
['', '拾', '佰', '仟']
];
let num = Math.abs(number);
let s = '';
const decimalPart = Math.floor((num * 100) % 100);
fraction.forEach((item, index) => {
s += (digit[Math.floor(decimalPart / (10 ** (1 - index))) % 10] + item).replace(/零./, '');
});
s = s || '';
num = Math.floor(num);
for (let i = 0; i < unit[0].length && num > 0; i += 1) {
let p = '';
for (let j = 0; j < unit[1].length && num > 0; j += 1) {
p = digit[num % 10] + unit[1][j] + p;
num = Math.floor(num / 10);
}
s = p.replace(/(零.)*零$/, '').replace(/^$/, '零') + unit[0][i] + s;
}
return s.replace(/(零.)*零元/, '元').replace(/(零.)+/g, '零').replace(/^元$/, '零元');
}
</script>
</body>
</html>
