function intToChinese(str) {
str = str + '';
var len = str.length - 1;
var idxs = ['', '十', '百', '千', '万', '十', '百', '千', '亿', '十', '百', '千', '万', '十', '百', '千', '亿'];
var num = ['零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖'];
return str.replace(/([1-9]|0+)/g, function($, $1, idx, full) {
var pos = 0;
if($1[0] != '0') {
pos = len - idx;
if(idx == 0 && $1[0] == 1 && idxs[len - idx] == '十') {
return idxs[len - idx];
}
return num[$1[0]] + idxs[len - idx];
} else {
var left = len - idx;
var right = len - idx + $1.length;
if(Math.floor(right / 4) - Math.floor(left / 4) > 0) {
pos = left - left % 4;
}
if(pos) {
return idxs[pos] + num[$1[0]];
} else if(idx + $1.length >= len) {
return '';
} else {
return num[$1[0]]
}
}
});
}
console.log(intToChinese(12345))
