JS实现将人民币金额转换为大写的示例代码

　　//人民币金额转大写程序 JavaScript版

　　//CopyRight Bardo QI

　　function numToCny(num){

　　var capUnit = ['万','亿','万','圆',''];

　　var capDigit = { 2:['角','分',''], 4:['仟','佰','拾','']};

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

　　if (((num.toString()).indexOf('.') > 16)||(isNaN(num)))

　　return '';

　　num = (Math.round(num*100)/100).toString();

　　num =((Math.pow(10,19-num.length)).toString()).substring(1)+num;

　　var i,ret,j,nodeNum,k,subret,len,subChr,CurChr=[];

　　for (i=0,ret='';i<5;i++,j=i*4+Math.floor(i/4)){

　　nodeNum=num.substring(j,j+4);

　　for(k=0,subret='',len=nodeNum.length;((k<len) && (parseInt(nodeNum.substring(k))!=0));k++){

　　CurChr[k%2] = capNum[nodeNum.charAt(k)]+((nodeNum.charAt(k)==0)?'':capDigit[len][k]);

　　if (!((CurChr[0]==CurChr[1]) && (CurChr[0]==capNum[0])))

　　if(!((CurChr[k%2] == capNum[0]) && (subret=='') && (ret=='')))

　　subret += CurChr[k%2];

　　}

　　subChr = subret + ((subret=='')?'':capUnit[i]);

　　if(!((subChr == capNum[0]) && (ret=='')))

　　ret += subChr;

　　}

　　ret=(ret=='')? capNum[0]+capUnit[3]: ret;

　　return ret;

　　}