js 数字转中文数字方法

js数字转中文数字方法

function SectionToChinese(num) {
  if (!/^\d*(\.\d*)?$/.test(num)) {
    alert("Number is wrong!");
    return "Number is wrong!";
}
var AA = new Array("零", "一", "二", "三", "四", "五", "六", "七", "八", "九");
var BB = new Array("", "十", "百", "千", "万", "亿", "点", "");
var a = ("" + num).replace(/(^0*)/g, "").split("."),
    k = 0,
    re = "";
for (var i = a[0].length - 1; i >= 0; i--) {
    switch (k) {
        case 0:
            re = BB[7] + re;
            break;
        case 4:
            if (!new RegExp("0{4}\\d{" + (a[0].length - i - 1) + "}$").test(a[0]))
                re = BB[4] + re;
            break;
        case 8:
            re = BB[5] + re;
            BB[7] = BB[5];
            k = 0;
            break;
    }
    if (k % 4 == 2 && a[0].charAt(i + 2) != 0 && a[0].charAt(i + 1) == 0) re = AA[0] + re;
    if (a[0].charAt(i) != 0) re = AA[a[0].charAt(i)] + BB[k % 4] + re;
    k++;
}
if (a.length > 1) //加上小数部分(如果有小数部分) 
{
    re += BB[6];
    for (var i = 0; i < a[1].length; i++) re += AA[a[1].charAt(i)];
}
return re;
}
console.log(SectionToChinese(999999));

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