最简单有效的数字金额大写转换

/** 数字金额大写转换(可以处理整数,小数,负数) */

function smalltoBIG(n) {

var fraction = ["角", "分"];

var digit = ["零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"];

var unit = [["元", "万", "亿"], ["", "拾", "佰", "仟"]];

var head = n < 0 ? "欠" : "";

n = Math.abs(n);

 

var s = "";

 

for (var i = 0; i < fraction.length; i++) {

s += (

digit[Math.floor(n * 10 * Math.pow(10, i)) % 10] + fraction[i]

).replace(/零./, "");

}

s = s || "整";

n = Math.floor(n);

 

for (var i = 0; i < unit[0].length && n > 0; i++) {

var p = "";

for (var j = 0; j < unit[1].length && n > 0; j++) {

p = digit[n % 10] + unit[1][j] + p;

n = Math.floor(n / 10);

}

s = p.replace(/(零.)*零$/, "").replace(/^$/, "零") + unit[0][i] + s;

}

return (

head +

s

.replace(/(零.)*零元/, "元")

.replace(/(零.)+/g, "零")

.replace(/^整$/, "零元整")

);

}