js 数字变中文

function numberToChinese(num) {
    const digits = ['零', '一', '二', '三', '四', '五', '六', '七', '八', '九'];
    const units = ['', '十', '百', '千', '万', '亿'];
    let strNum = num.toString();
    let chineseNum = '';
    let unitPos = 0;
    let zero = false;

    for (let i = strNum.length - 1; i >= 0; i--) {
        let digit = parseInt(strNum[i]);
        if (digit === 0) {
            zero = true;
        } else {
            if (zero) {
                chineseNum = digits[0] + chineseNum;
                zero = false;
            }
            chineseNum = digits[digit] + units[unitPos] + chineseNum;
        }
        unitPos++;
    }

    // 处理特殊情况，例如10-19的数字
    if (chineseNum.startsWith('一十')) {
        chineseNum = chineseNum.substring(1);
    }

    return chineseNum;
}

console.log(numberToChinese(12345)); // 输出：一万二千三百四十五