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formatAmountCapitalized 将金额数字转换成大写
export function formatAmountCapitalized(n) {
let fraction = ['角', '分'];
let digit = [
'零', '壹', '贰', '叁', '肆',
'伍', '陆', '柒', '捌', '玖'
];
let unit = [
['元', '万', '亿'],
['', '拾', '佰', '仟']
];
let head = n < 0 ? '(负数)' : '';
n = Math.abs(n);
let s = '';
for (let i = 0; i < fraction.length; i++) {
s += (digit[Math.floor(shiftRight(n,1+i)) % 10] + fraction[i]).replace(/零./, '');
}
s = s || '整';
n = Math.floor(n);
for (let i = 0; i < unit[0].length && n > 0; i++) {
let p = '';
for (let j = 0; j < unit[1].length && n > 0; j++) {
p = digit[n % 10] + unit[1][j] + p;
n = Math.floor(shiftLeft(n, 1));
}
s = p.replace(/(零.)*$/, '').replace(/^$/, '零') + unit[0][i] + s;
}
return head + s.replace(/(零.)*零元/, '元')
.replace(/(零.)+/g, '零')
.replace(/^$/, '零元整');
}
// 向右移位
function shiftRight(number, digit){
digit = parseInt(digit, 10)
let value = number.toString().split('e')
return +(value[0] + 'e' + (value[1] ? (+value[1] + digit) : digit))
}
// 向左移位
function shiftLeft(number, digit){
digit = parseInt(digit, 10)
let value = number.toString().split('e')
return +(value[0] + 'e' + (value[1] ? (+value[1] - digit) : -digit))
}
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