JavaScript实现把数字转换成中文

var _change = {            ary0:["零", "一", "二", "三", "四", "五", "六", "七", "八", "九"],            ary1:["", "十", "百", "千"],            ary2:["", "万", "亿", "兆"],            init:function (name) {                this.name = name;            },            strrev:function () {                var ary = []                for (var i = this.name.length; i >= 0; i--) {                    ary.push(this.name[i])                }                return ary.join("");            }, //倒转字符串。            pri_ary:function () {                var $this = this                var ary = this.strrev();                var zero = ""                var newary = ""                var i4 = -1                for (var i = 0; i < ary.length; i++) {                    if (i % 4 == 0) { //首先判断万级单位，每隔四个字符就让万级单位数组索引号递增                        i4++;                        newary = this.ary2[i4] + newary; //将万级单位存入该字符的读法中去，它肯定是放在当前字符读法的末尾，所以首先将它叠加入$r中，                        zero = ""; //在万级单位位置的“0”肯定是不用的读的，所以设置零的读法为空                      }                    //关于0的处理与判断。                    if (ary[i] == '0') { //如果读出的字符是“0”，执行如下判断这个“0”是否读作“零”                        switch (i % 4) {                            case 0:                                break;                            //如果位置索引能被4整除，表示它所处位置是万级单位位置，这个位置的0的读法在前面就已经设置好了，所以这里直接跳过                            case 1:                            case 2:                            case 3:                                if (ary[i - 1] != '0') {                                    zero = "零"                                }                                ; //如果不被4整除，那么都执行这段判断代码：如果它的下一位数字（针对当前字符串来说是上一个字符，因为之前执行了反转）也是0，那么跳过，否则读作“零”                                break;                          }                          newary = zero + newary;                        zero = '';                    }                    else { //如果不是“0”                        newary = this.ary0[parseInt(ary[i])] + this.ary1[i % 4] + newary; //就将该当字符转换成数值型,并作为数组ary0的索引号,以得到与之对应的中文读法，其后再跟上它的的一级单位（空、十、百还是千）最后再加上前面已存入的读法内容。                    }                  }                if (newary.indexOf("零") == 0) {                    newary = newary.substr(1)                }//处理前面的0                return newary;            }        }          //创建class类        function change() {            this.init.apply(this, arguments);        }        change.prototype = _change   //创建实例        var k = new change("00102040");        alert(k.pri_ary())