javascriptは価格の合法性の例を検証します(必ず2桁の小数を入力します).

 
  
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  <br>    function ckProPrice() { 
  <br>        //       
  <br>        var reg = /(^[-+]?[1-9]\d*(\.\d{1,2})?$)|(^[-+]?[0]{1}(\.\d{1,2})?$)/; 
  <br>        if ($("#txtProPrice").val() == "") { 
  <br>            alert("        ！"); 
  <br>            return false; 
  <br>        } else { 
  <br>            if (!reg.test($("#txtProPrice").val())) { 
  <br>                alert("           (  ，      )！"); 
  <br>                return false; 
  <br>            } else { 
  <br>                alert("    ！yige.org"); 
  <br>                return true; 
  <br>            } 
  <br>        } 
  <br>    } 
  <br>    $(function() { 
  <br>        $("#btnTest").click(function() { 
  <br>            ckProPrice(); 
  <br>        }); 
  <br>    }); 
  <br>