阿拉伯数字转中文数字

a2c.js

function toChineseNumeral(num){
  var numerals = {
    '-':'负',
    '.':'点',
    0:'零',
    1:'一',
    2:'二',
    3:'三',
    4:'四',
    5:'五',
    6:'六',
    7:'七',
    8:'八',
    9:'九',
    10:'十',
    100:'百',
    1000:'千',
    10000:'万'
  };
  num = ''+num;
  var n = '';
  var tmp = num.split('.');
  var intNum = tmp[0];
  var floatNum = tmp[1];
  var intNumLen = intNum.length;
  var sign = '';
  var intStr='',floatStr= '';
  var padding = '000000000000000';

  if (intNum.indexOf('-') === 0) {
    intNum = intNum.slice(1);
    sign = numerals['-'];
    intNumLen -= 1;
  }
  
  for (var i = 0; i < intNumLen; i++) {
    n = intNum[i];
    if (i > 0 && intNumLen > 1 && intNum[i-1] > 0) {
      intStr += numerals['1'+ padding.slice(intNumLen-i)];
    }
    intStr += numerals[ n ];
  }
  intStr = intStr
    .replace(/^一十/, '十')
    .replace(/^(.+?)零{1,}(.+)$/, '$1零$2')
    .replace( /(.+?)零{1,}$/, '$1');

  if (floatNum) {
    floatStr += numerals['.'];
    for(var j=0; j<floatNum.length; j++) {
      n = floatNum[j];
      floatStr += numerals[ n ];
    }
  }
  
  return sign+intStr+floatStr;
}