阿拉伯数字转中文大写数字的JS

 1 function intToChinese ( str ) {
 2     str = str+‘‘;
 3     var len = str.length-1;
 4     var idxs = [‘‘,‘十‘,‘百‘,‘千‘,‘万‘,‘十‘,‘百‘,‘千‘,‘亿‘,‘十‘,‘百‘,‘千‘,‘万‘,‘十‘,‘百‘,‘千‘,‘亿‘];
 5     var num = [‘零‘,‘壹‘,‘贰‘,‘叁‘,‘肆‘,‘伍‘,‘陆‘,‘柒‘,‘捌‘,‘玖‘];
 6     return str.replace(/([1-9]|0+)/g,function( $, $1, idx, full) {
 7         var pos = 0;
 8         if( $1[0] != ‘0‘ ){
 9             pos = len-idx;
10             if( idx == 0 && $1[0] == 1 && idxs[len-idx] == ‘十‘){
11                 return idxs[len-idx];
12             }
13             return num[$1[0]] + idxs[len-idx];
14         } else {
15             var left = len - idx;
16             var right = len - idx + $1.length;
17             if( Math.floor(right/4) - Math.floor(left/4) > 0 ){
18                 pos = left - left%4;
19             }
20             if( pos ){
21                 return idxs[pos] + num[$1[0]];
22             } else if( idx + $1.length >= len ){
23                 return ‘‘;
24             }else {
25                 return num[$1[0]]
26             }
27         }
28     });
29 }