一段简单的JS代码,谁来帮我修改了!~人在线等~

<%@LANGUAGE="JAVASCRIPT" CODEPAGE="936"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script type="text/javascript" language="javascript">
function ck()
{
var msg="信息确认: \n \n";
var name=document.getElementById("name").value;
var age=document.getElementById("age").value;if (name=="")
{
    alert("名字不能为空！");
    document.getElementById("name").value="";
    document.getElementById("name").focus();
    return false;
}
if (age=="")
{
    msg+="姓名 : "+name+"\n";
}
else
{
    msg+="姓名 : "+name+"\n";
    msg+="年龄 : "+age+"\n";
}
alert(msg);return false;

</script>
</head><body>
<form name="MyForm">
<p>姓名 : <input type="text" name="name" id="name" value="" />
<p>年龄 : <input type="text" name="age" id="age" value="" /> </p>
<input type="button" name="Submit" value="提交" onclick="ck()"/>
          <input type="reset" name="reset" value="重置" />
</p></form>
</body>
</html>

解决方案 »

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<%@LANGUAGE="JAVASCRIPT" CODEPAGE="936"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档 </title>
<script type="text/javascript" language="javascript">
function ck()
{
var msg="信息确认: \n \n";
var name=document.getElementById("name").value;
var age=document.getElementById("age").value; if (name=="")
{
    alert("名字不能为空！");
    document.getElementById("name").value="";
    document.getElementById("name").focus();
    return false;
}
if (age=="")
{
    msg+="姓名 : "+name+"\n";
}
else
{
    msg+="姓名 : "+name+"\n";
    msg+="年龄 : "+age+"\n";
}
//彈出你要的信息，也可以輸出
alert(msg);return false;
</script>
</head> <body>
<form name="MyForm">
<p>姓名 : <input type="text" name="name" id="name" value="" />
<p>年龄 : <input type="text" name="age" id="age" value="" /> </p>
<input type="button" name="Submit" value="提交" onclick="ck()"/>
          <input type="reset" name="reset" value="重置" />
</p> </form>
</body>
</html>
L@_@K
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title> new document </title>
  <meta name="generator" content="editplus" />
  <meta name="author" content="" />
  <meta name="keywords" content="" />
  <meta name="description" content="" />
  <script type="text/javascript">
  
  </script>
</head> <body>
<form name="MyForm">
<p>姓名 : <input type="text" name="name" id="name" value="" />
<p>年龄 : <input type="text" name="age" id="age" value="" /> </p>
<input type="button" name="Submit" value="提交" onclick="ck()"/>
  <input type="reset" name="reset" value="重置" />
</p>
</form>
</body>
</html>
<%@LANGUAGE="JAVASCRIPT" CODEPAGE="936"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script type="text/javascript" language="javascript">
function ck()
{
     var msg="信息确认: \n \n";
     var name=document.getElementById("name").value;
     var age=document.getElementById("age").value;
if (name=="")
            {
                  alert("名字不能为空！");
                  document.getElementById("name").value="";
                  document.getElementById("name").focus();
                  return false;
             }
else
        {
        msg+="姓名 : "+name+"\n";
        if(age != "")
        {
msg+="年龄 : "+age+"\n";
}
    if(confirm(msg)){
                    return true;
                }else{
                 return false;
                }
                }
   }
</script>
</head>
<body>
<form name="MyForm">
<p>姓名 : <input type="text" name="name" id="name" value="" /></p>
<p>年龄 : <input type="text" name="age" id="age" value="" />
</p>
<input type="button" name="Submit" value="提交" onclick="ck();" /> <input type="reset" name="reset" value="重置" />
</p></form>
</body>
</html>
<%@LANGUAGE ="JAVASCRIPT" CODEPAGE="936"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script type="text/javascript" language="javascript">
function ck()
{
     var msg="信息确认: \n \n";
     var name=document.getElementById("name").value;
     var age=document.getElementById("age").value;
if (name=="")
            {
                  alert("名字不能为空！");
                  document.getElementById("name").value="";
                  document.getElementById("name").focus();
                  return false;
             }else
        {
        msg+="姓名 : "+name+"\n";
if(age!=""){
         msg+="年龄 : "+age+"\n";
}
    if(confirm(msg)){
                    return true;
                }else{
                 return false;
                }
                }
   }
</script>
</head> <body>
<form name="MyForm">
<p>
姓名 :
<input type="text" name="name" id="name" value="" />
</p>
<p>
年龄 :
<input type="text" name="age" id="age" value="" />
</p>
<input type="submit" value="提交" onclick="return ck();" />
<input type="reset" value="重置" />
</form>
</body>
</html>