JavaScript根据身份证号码识别性别与年龄的实现方法

<html>
<head>
<meta charset="gb2312">
<title>jb51</title>
<script type="text/javascript"> 
function discriCard(UUserCard)
{ 
 UUserCard.substring(6,10)+"-"+UUserCard.substring(10,12)+"-"+UUserCard.substring(12,14); 
 //获取性别 
 if(parseInt(UUserCard.substr(16,1))%2==1) 
 { 
  alert("男"); 
  //是男则执行代码 ... 
 } 
 else 
 { 
  alert("女"); 
  //是女则执行代码 ... 
 } 
 //获取年龄 
 var myDate = new Date(); 
 var month = myDate.getMonth() + 1; 
 var day = myDate.getDate(); 
 var age = myDate.getFullYear()-UUserCard.substring(6, 10) - 1; 
 if (UUserCard.substring(10,12)<month||UUserCard.substring(10,12)==month&&UUserCard.substring(12,14)<=day) 
 { 
  age++; 
 } 
 alert(age); 
 //年龄 age 
} 
window.onload=function()
{
 var txt=document.getElementById("txt");
 var bt=document.getElementById("bt");
 bt.onclick=function(){discriCard(txt.value);}
}
</script>
</head>
<body>
<input type="text" id="txt" />
<input type="button" value="点击获取信息" id="bt" />
</body>
</html>