完美版js金錢正則表達式校驗

<! doctype html>

< html lang="en">

  < head >

   < meta charset="UTF-8">

   < meta name="Generator" content="EditPlus®">

   < meta name="Author" content="">

   < meta name="Keywords" content="">

   < meta name="Description" content="">

   < title >Document</ title >

  </ head >

  < body >

  

  < script type="text/javascript">

      var reg = /(^[1-9]([0-9]+)?(\.[0-9]{1,2})?$)|(^(0){1}$)|(^[0-9]\.[0-9]([0-9])?$)/;

      var money = "520.100";

      //000 錯

      //0 對

      //0. 錯

      //0.0 對

      //050 錯

      //00050.12錯

      //70.1 對

      //70.11 對

      //70.111錯

      //500 正確

      if (reg.test(money)) {

           alert("正確~");

      }else{

           alert("有誤~");

      };

  </ script >

   

 

  </ body >

</ html >