我在index.php文件中有这个表单：
<HTML>
<HEAD>
<TITLE>Contact Page</TITLE>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
</HEAD>
<table border="0" cellpadding="0" cellspacing="3">
<form method="post" action="thankyou.php">
<tr>
<td>Name:</td>
<td><input name="name" type="text"></td>
</tr>
<tr><td>Your Browser:</td>
<td>
<select name="Browser">
<option value="Internet Explorer" selected>Internet Explorer
<option value="Mozilla">Mozilla
<option value="Other">Other
</select></td>
</tr>
<tr>
<td>Software you use:</td>
<td><input name="Microsoft Word" type="checkbox" value="yes">Microsoft Word<br>
<input name="Microsoft Excel" type="checkbox" value="yes">Microsoft Excel<br>
<input name="Adobe Photoshop" type="checkbox" value="yes">Adobe Photoshop<br>
</td>
</tr>
<tr>
<td>Age:</td>
<td>
<input name="Age" type="radio" value="10-15">10-15<br>
<input name="Age" type="radio" value="16-20">16-20<br>
<input name="Age" type="radio" value="21-90">21-90<br>
</td>
</tr>
<tr><td>Other Comments:</td>
<td><textarea name="Other Comments" rows=10 cols=30></textarea></td>
</tr>
<tr><td> </td><td><input type="submit" value="Send Message"></td>
</tr></form>
</table>
这是在我的thankyou.php中：
<?php
//This command imports the values from contact.php. Please do not touch.
@import_request_variables("gpc");
//The email address the message will be sent to
$youremail = "[email protected]";
//The subject of the email you will receive;
$subject = "Our Survey";
//The page your visitor will be redirected to.
$redirect = "http://www.yoursite.com";
//Time until the page redirects your visitor (seconds)
$secs = "5";
//This takes all of the information from the form and sorts it out. Please leave as is.
foreach ($_POST as $name => $value) {
$thetext = $thetext . "$name : $value\n";
}
?>
<HTML>
<HEAD>
<TITLE>Thank you</TITLE>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
</HEAD>
<table cellpadding=0 cellspacing=0>
<tr><td>
<?php
//Checks to see if the name field is empty. You can delete or add fields as needed.
if ((!empty($name))) {
$name = stripslashes($name);
$message = stripslashes($message);
//This is where the email is sent using your values from above.
mail("$youremail", "$subject", "$thetext");
?>
<meta http-equiv="refresh" content="<?php = $secs; ?>;URL=<?php = $redirect; ?>">
Thank you, we have recieved your message.
<p>
You are now being redirected to our <a href="<?php = $redirect; ?>">homepage</a>.
<?php
} else {
?>
We require your name email address and a message in order to reply to your message. Please click <a href="javascript:history.back(1);">here</a> or your browsers back button to try again.
<?php
}
?>
</td></tr>
</table>
我想将“您的浏览器”和/或“其他评论：”设为必填字段，因此如果访问者至少填写其中一个字段，他将被重定向到某个页面，请说明，请填写所需内容领域。如果他填写任何表格，表格应该成功提交。我知道需要一些基本的编辑，但不幸的是我只是在学习而不能自己做。
请帮忙。
试试这个：
<HTML>
<HEAD>
<TITLE>Contact Page</TITLE>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
</HEAD>
<script>
function validateForm()
{
var x=document.forms["my_form"]["name"].value;
var y=document.forms["my_form"]["comments"].value;
if (x==null || x=="")
{
alert("name must be filled out");
return false;
}
if (y==null || y=="")
{
alert("comments must be filled out");
return false;
}
}
</script>
<table border="0" cellpadding="0" cellspacing="3">
<form method="post" action="thankyou.php" name="my_form" onsubmit="return validateForm()">
<tr>
<td>Name:</td>
<td><input name="name" type="text"></td>
</tr>
<tr><td>Other Comments:</td>
<td><textarea name="comments" rows=10 cols=30></textarea></td>
</tr>
<tr><td> </td><td><input type="submit" value="Send Message"></td>
</tr></form>
</table>
这将在同一页面上验证，因此最好。
编辑：
只有一个，尝试这样：
<HTML>
<HEAD>
<TITLE>Contact Page</TITLE>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
</HEAD>
<script>
function validateForm()
{
var x=document.forms["my_form"]["name"].value;
var y=document.forms["my_form"]["comments"].value;
var count = 0;
if (!(x==null || x==""))
{
count++;
}
if (!(y==null || y==""))
{
count++;
}
if(count < 1){
alert("Please fill at least one field");
return false;
}
}
</script>
<table border="0" cellpadding="0" cellspacing="3">
<form method="post" action="thankyou.php" name="my_form" onsubmit="return validateForm()">
<tr>
<td>Name:</td>
<td><input name="name" type="text"></td>
</tr>
<tr><td>Other Comments:</td>
<td><textarea name="comments" rows=10 cols=30></textarea></td>
</tr>
<tr><td> </td><td><input type="submit" value="Send Message"></td>
</tr></form>
</table>