用JavaScript将数字转换为大写金额详解编程语言

项目中用到的，用JavaScript将数字转换为大写金额，分享出来给大家

var digitUppercase = function(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'); 
}; 
 
console.log(digitUppercase(7682.01)); //柒仟陆佰捌拾贰元壹分 
console.log(digitUppercase(7682));  //柒仟陆佰捌拾贰元整 
console.log(digitUppercase(951434677682.00)); //玖仟伍佰壹拾肆亿叁仟肆佰陆拾柒万柒仟陆佰捌拾贰元整