javascript进行客户端数据的校验


<script language="JavaScript">
<!--
function Juge(theForm)
{

    if (theForm.title.value == "")
    {
        alert("请输入标题！");
        theForm.title.focus();
        return (false);
    }
    if (theForm.detail.value == "")
    {
        alert("请输入内容！");
        theForm.detail.focus();
        return (false);
    }
 if (theForm.name.value == "")
    {
        alert("请输入作者！");
        theForm.name.focus();
        return (false);
    }
 if (theForm.email.value == "")
    {
        alert("请输入信箱！");
        theForm.email.focus();
        return (false);
    }

}

-->
</script>

<html>
<head>
<title>文章发布</title>
<link rel="stylesheet" type="text/css" href="style.css">
</head>

<body bgcolor=#fafee9>
<center>原创文章投稿处</center>
<br><center><font color=red>此处严禁发表转载或者抄袭的文章！</font></center>
<form name="form1" method="post" action="pub_ok.php" onsubmit="javascript:return Juge(this);" >
 <table width="90%" border="0" cellspacing="1" cellpadding="1" align="center">
  <tr>
   <td>
    您的姓名：<input type=text name=name size=30>
   </td>
  </tr>
  <tr>
   <td>
    您的信箱：<input type=text name=email size=30>
   </td>
  </tr>
  <tr>
   <td>
    文章标题：<input type="text" name=title size="50">
   </td>
  </tr>
    
  <tr>
   <td>
    文章内容：<br><textarea name=detail style="width=80%;height=180px;"></textarea>
   </td>
  </tr>
  <tr>
   <td>
    一些说明：<br><textarea name=demo style="width=80%;height=80px;"></textarea>
   </td>
  </tr>
  <tr>
   <td><input type="submit" name="pub" value="发布您的作品"></td>
  </tr>
 </table>
 </form>
<p>
</body>
</html>