大写数字如何转成阿拉伯数字

自己设计算法了
先要获取一个完整的大写数字str
先从左边判断起
看你判断的范围了
比如从万
那么就先判断是否有“万”
然后获取左边的数字转换成阿拉伯数字
比如“八万四千二十”获取了“八万”转换成了80000
然后继续获取万右边的
从千获取同样方法转换成4000
继续获取百，没有
继续获取十，转换成20
然后把所有的相加就成了84020应该是一种递归算法
具体的楼主自己写

没怎么测试<script language="JavaScript">

</script>

用json存入相应的对应关系也可以，比上面的代码要少一些，或者用map key-value

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
  <title> New Document </title>
</head> <body>
  <script type="text/javascript">
    String.prototype.convertToNumber=function(){
var numbers = {"零":0,"一":1,"二":2,"三":3,"四":4,"五":5,"六":6,"七":7,"八":8,"九":9};
var multiple = {"十":10,"百":100,"千":1000,"万":10000,"亿":100000000};
var result = 0;
for(var i=0;i<this.length;i++){
if(numbers[this.charAt(i)]){
var temp = numbers[this.charAt(i)];
for(var j=i+1;j<this.length;j++){
if(!multiple[this.charAt(j)]){
break;
}
temp *= multiple[this.charAt(j)];
}
result += temp;
}
}
return result;
} alert("一百七十四".convertToNumber());
  </script>
</body>
</html>

知道Array不能有key,,,没想到有 map key-value

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
  <title> New Document </title>
</head> <body>
  <script type="text/javascript">
    String.prototype.convertToNumber=function(){
        var numbers = {"零":0,"一":1,"二":2,"三":3,"四":4,"五":5,"六":6,"七":7,"八":8,"九":9,"十":10};
        var multiple = {"个":1,"十":10,"百":100,"千":1000,"万":10000,"亿":100000000};
        var result = 0;
        for(var i=0;i<this.length;i++){
var temp = 0;
            if(numbers[this.charAt(i)]){
                temp = numbers[this.charAt(i)];
                i ++;
            }
if(i == this.length)return result + temp;            if(multiple[this.charAt(i)]){
temp *= multiple[this.charAt(i)];
             }else{
i --;
}

             result += temp;
        }
        return result;
    }    alert("一百七十四".convertToNumber());
alert("十四".convertToNumber());//楼上的这里有错
  </script>
</body>
</html>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
  <title> New Document </title>
</head> <body>
  <script type="text/javascript">
    String.prototype.convertToNumber=function(){
        var numbers = {"一":1,"二":2,"三":3,"四":4,"五":5,"六":6,"七":7,"八":8,"九":9};
        var multiple = {"十":10,"百":100,"千":1000,"万":10000,"亿":100000000};
        var result = 0;
        var l = 1;//十、百、千单位
        var k = 1;//万单位
        var j = 1;//亿单位
        for(var i=this.length-1;i>=0;i--){
         if(numbers[this.charAt(i)]){
                result += l*numbers[this.charAt(i)];
                l = 1;
            }else if(multiple[this.charAt(i)]){
             if(l==10){//特殊处理十
         result += l;
        }
        if(multiple[this.charAt(i)]==100000000){
k = 1;
}
        l = k*j*multiple[this.charAt(i)];
             if(multiple[this.charAt(i)]==10000){
             k = k*multiple[this.charAt(i)];
             }else if(multiple[this.charAt(i)]==100000000){
             j = j*multiple[this.charAt(i)];
             }
         }
        }
        if(l!=1){
         result += l;
        }
        return result;
    }    alert("十四".convertToNumber());
  </script>
</body>
</html>

js的数组功能难道比java来的更强大？

调试易

大写数字如何转成阿拉伯数字

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