JavaScript实现把数字转换成中文_javascript技巧

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())

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