Depreciating menu list

Anon

I am in the process of building a Questionnaire for a web site which I would like to get up and running.

There is a part on the questionnaire which I am having a problem with.

My objective is to disable the duplicated choices in the drop down menu’s based on previous options chosen.
As there are 12 options which participants are requested to prioritise, the options available on subsequent menus should diminish to the point where the last question has only 1 option available- and this could be automatically inserted.

As I know very little about Java, I would appreciate your assistance.

vsego

If you want it all as one page - it's JavaScript and you're on the wrong forum. I can tell you, though, that this is a tough task if you want to be both NS and IE compatibile.

It might be easier to allow value, let's say, from 1 to 12 for all choices, but then check in the script if those have duplicates. If so, print error message and as user to repeat his/her choice. This will work on all browsers and is much easier to write.

To quicken things a bit, you can make such check in JavaScript as well (but don't forget check in the script for those who don't have JS or keep it disabled!)

Written, as always, by heart - use with precaution. :-)

function check() {
for (i = 0; i < 11; i++)
for (j = i + 1; j < 12; j++)
if (eval("document.myForm.options" + i + ".value") == eval("document.myForm.opt" + j + ".value")) {
alert("Options " + i + " and " + j + " are duplicates!");
return false;
}
return true;
}

--></script>

...

<?php
for ($i = 0; $i < 12; $i++) {
echo "Choice ".($i + 1).": <select name=\"opt$i\">\n";
for ($j = 1; $j <= 12; $j++) {
echo " <option value=\"$j\">\n";
echo "</select><br>\n";
?>

</form>

myscript.php has to have a check (in PHP) similar to the one written here in JavaScript

iiiiiiimike

I have spent forever trying to solve this delima, and you have given me an alternative solution in 19min's and 10sec's.
I don't know weather to hit you or hug you!
It is refreshing to know that there are people who are prepared to assist their fellowman- without any charge attached.

Thank-you very much Vedran.

vsego

But there is a charge. I know it sounds like a cliche, but I actually find it relaxing and pleasing to help. Reminds me of times when I was geting tips and learning tricks, right here, on the PHPBuilder.

Pass the torch. :-)

iiiiiiimike

What charge??

vsego

Charge is whatever one "earns". From my previous post: "I actually find it relaxing and pleasing to help." It just makes me happy when someone has use of what I write. That doesn't mean that one has to pay - posting "it works" is very welcome sign of appreciation and what you wrote made me feel great. :-) That's my "charge". ;-)

Happy coding

iiiiiiimike

Vedran, I would like to be able to say "it worked"-but I can't...can you??
Is it possible you could show me how your alternative solution works on a copy of the document below?

I have included the below document in the hope that some genius out there may be able to manipulate the coding on my attempt at my original objective.
The script works for the first two menu's(Vip_1 and Vip_2), but that's as far as it goes.

I hope this challenge gives someone a charge!

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HEAD><TITLE>Untitled Document</TITLE>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<SCRIPT language=JavaScript>

</SCRIPT>

<META content="MSHTML 5.00.2314.1000" name=GENERATOR></HEAD>
<BODY bgColor=#ffffff>
<FORM method=post name=MForm>
<P><SELECT name=Vip_1
onchange="NoDupl(this,document.MForm.Vip_2,
 Vip_3,Vip_4,Vip_5,Vip_6,Vip_7,Vip_8,Vip_9,Vip_10,Vip_11,Vip_12 )">
<OPTION selected value=A></OPTION> <OPTION value=B>1</OPTION> <OPTION
value=C>2</OPTION> <OPTION value=D>3</OPTION> <OPTION value=E>4</OPTION>
<OPTION value=F>5</OPTION> <OPTION value=G>6</OPTION> <OPTION
value=H>7</OPTION> <OPTION value=I>8</OPTION> <OPTION value=J>9</OPTION>
<OPTION value=K>10</OPTION> <OPTION value=L>11</OPTION> <OPTION
value=M>12</OPTION></SELECT> </P>
<P><SELECT name=Vip_2
onchange="NoDupl(this,document.MForm.Vip_1,
Vip_3,Vip_4,Vip_5,Vip_6,Vip_7,Vip_8,Vip_9,Vip_10,Vip_11,Vip_12 )">
<OPTION selected value=A></OPTION> <OPTION value=B>1</OPTION> <OPTION
value=C>2</OPTION> <OPTION value=D>3</OPTION> <OPTION value=E>4</OPTION>
<OPTION value=F>5</OPTION> <OPTION value=G>6</OPTION> <OPTION
value=H>7</OPTION> <OPTION value=I>8</OPTION> <OPTION value=J>9</OPTION>
<OPTION value=K>10</OPTION> <OPTION value=L>11</OPTION> <OPTION
value=M>12</OPTION></SELECT> </P>
<P><SELECT name=Vip_3
onchange="NoDupl(this,document.MForm.Vip_1,
Vip_2,Vip_4,Vip_5,Vip_6,Vip_7,Vip_8,Vip_9,Vip_10,Vip_11,Vip_12 )">
<OPTION selected value=A></OPTION> <OPTION value=B>1</OPTION> <OPTION
value=C>2</OPTION> <OPTION value=D>3</OPTION> <OPTION value=E>4</OPTION>
<OPTION value=F>5</OPTION> <OPTION value=G>6</OPTION> <OPTION
value=H>7</OPTION> <OPTION value=I>8</OPTION> <OPTION value=J>9</OPTION>
<OPTION value=K>10</OPTION> <OPTION value=L>11</OPTION> <OPTION
value=M>12</OPTION></SELECT> </P>
<P><SELECT name=Vip_4
onchange="NoDupl(this,document.MForm.Vip_1,
Vip_2,Vip_3,Vip_5,Vip_6,Vip_7,Vip_8,Vip_9,Vip_10,Vip_11,Vip_12 )">
<OPTION selected value=A></OPTION> <OPTION value=B>1</OPTION> <OPTION
value=C>2</OPTION> <OPTION value=D>3</OPTION> <OPTION value=E>4</OPTION>
<OPTION value=F>5</OPTION> <OPTION value=G>6</OPTION> <OPTION
value=H>7</OPTION> <OPTION value=I>8</OPTION> <OPTION value=J>9</OPTION>
<OPTION value=K>10</OPTION> <OPTION value=L>11</OPTION> <OPTION
value=M>12</OPTION></SELECT> </P>
<P><SELECT name=Vip_5
onchange="NoDupl(this,document.MForm.Vip_1,
Vip_2,Vip_3,Vip_4,Vip_6,Vip_7,Vip_8,Vip_9,Vip_10,Vip_11,Vip_12 )">
<OPTION selected value=A></OPTION> <OPTION value=B>1</OPTION> <OPTION
value=C>2</OPTION> <OPTION value=D>3</OPTION> <OPTION value=E>4</OPTION>
<OPTION value=F>5</OPTION> <OPTION value=G>6</OPTION> <OPTION
value=H>7</OPTION> <OPTION value=I>8</OPTION> <OPTION value=J>9</OPTION>
<OPTION value=K>10</OPTION> <OPTION value=L>11</OPTION> <OPTION
value=M>12</OPTION></SELECT> </P>
<P><SELECT name=Vip_6
onchange="NoDupl(this,document.MForm.Vip_1,
Vip_2,Vip_3,Vip_4,Vip_5,Vip_7,Vip_8,Vip_9,Vip_10,Vip_11,Vip_12 )">
<OPTION selected value=A></OPTION> <OPTION value=B>1</OPTION> <OPTION
value=C>2</OPTION> <OPTION value=D>3</OPTION> <OPTION value=E>4</OPTION>
<OPTION value=F>5</OPTION> <OPTION value=G>6</OPTION> <OPTION
value=H>7</OPTION> <OPTION value=I>8</OPTION> <OPTION value=J>9</OPTION>
<OPTION value=K>10</OPTION> <OPTION value=L>11</OPTION> <OPTION
value=M>12</OPTION></SELECT> </P>
<P><SELECT name=Vip_7
onchange="NoDupl(this,document.MForm.Vip_1,
Vip_2,Vip_3,Vip_4,Vip_5,Vip_6,Vip_8,Vip_9,Vip_10,Vip_11,Vip_12 )">
<OPTION selected value=A></OPTION> <OPTION value=B>1</OPTION> <OPTION
value=C>2</OPTION> <OPTION value=D>3</OPTION> <OPTION value=E>4</OPTION>
<OPTION value=F>5</OPTION> <OPTION value=G>6</OPTION> <OPTION
value=H>7</OPTION> <OPTION value=I>8</OPTION> <OPTION value=J>9</OPTION>
<OPTION value=K>10</OPTION> <OPTION value=L>11</OPTION> <OPTION
value=M>12</OPTION></SELECT> </P>
<P><SELECT name=Vip_8
onchange="NoDupl(this,document.MForm.Vip_1,
Vip_2,Vip_3,Vip_4,Vip_5,Vip_6,Vip_7,Vip_9,Vip_10,Vip_11,Vip_12 )">
<OPTION selected value=A></OPTION> <OPTION value=B>1</OPTION> <OPTION
value=C>2</OPTION> <OPTION value=D>3</OPTION> <OPTION value=E>4</OPTION>
<OPTION value=F>5</OPTION> <OPTION value=G>6</OPTION> <OPTION
value=H>7</OPTION> <OPTION value=I>8</OPTION> <OPTION value=J>9</OPTION>
<OPTION value=K>10</OPTION> <OPTION value=L>11</OPTION> <OPTION
value=M>12</OPTION></SELECT> </P>
<P><SELECT name=Vip_9
onchange="NoDupl(this,document.MForm.Vip_1,
Vip_2,Vip_3,Vip_4,Vip_5,Vip_6,Vip_7,Vip_8,Vip_10,Vip_11,Vip_12 )">
<OPTION selected value=A></OPTION> <OPTION value=B>1</OPTION> <OPTION
value=C>2</OPTION> <OPTION value=D>3</OPTION> <OPTION value=E>4</OPTION>
<OPTION value=F>5</OPTION> <OPTION value=G>6</OPTION> <OPTION
value=H>7</OPTION> <OPTION value=I>8</OPTION> <OPTION value=J>9</OPTION>
<OPTION value=K>10</OPTION> <OPTION value=L>11</OPTION> <OPTION
value=M>12</OPTION></SELECT> </P>
<P><SELECT name=Vip_10
onchange="NoDupl(this,document.MForm.Vip_1,
Vip_2,Vip_3,Vip_4,Vip_5,Vip_6,Vip_7,Vip_8,Vip_9,Vip_11,Vip_12 )">
<OPTION selected value=A></OPTION> <OPTION value=B>1</OPTION> <OPTION
value=C>2</OPTION> <OPTION value=D>3</OPTION> <OPTION value=E>4</OPTION>
<OPTION value=F>5</OPTION> <OPTION value=G>6</OPTION> <OPTION
value=H>7</OPTION> <OPTION value=I>8</OPTION> <OPTION value=J>9</OPTION>
<OPTION value=K>10</OPTION> <OPTION value=L>11</OPTION> <OPTION
value=M>12</OPTION></SELECT> </P>
<P><SELECT name=Vip_11
onchange="NoDupl(this,document.MForm.Vip_1,
Vip_2,Vip_3,Vip_4,Vip_5,Vip_6,Vip_7,Vip_8,Vip_9,Vip_10,Vip_12 )">
<OPTION selected value=A></OPTION> <OPTION value=B>1</OPTION> <OPTION
value=C>2</OPTION> <OPTION value=D>3</OPTION> <OPTION value=E>4</OPTION>
<OPTION value=F>5</OPTION> <OPTION value=G>6</OPTION> <OPTION
value=H>7</OPTION> <OPTION value=I>8</OPTION> <OPTION value=J>9</OPTION>
<OPTION value=K>10</OPTION> <OPTION value=L>11</OPTION> <OPTION
value=M>12</OPTION></SELECT> </P>
<P><SELECT name=Vip_12
onchange="NoDupl(this,document.MForm.Vip_1,
Vip_2,Vip_3,Vip_4,Vip_5,Vip_6,Vip_7,Vip_8,Vip_9,Vip_10,Vip_11 )">
<OPTION selected value=A></OPTION> <OPTION value=B>1</OPTION> <OPTION
value=C>2</OPTION> <OPTION value=D>3</OPTION> <OPTION value=E>4</OPTION>
<OPTION value=F>5</OPTION> <OPTION value=G>6</OPTION> <OPTION
value=H>7</OPTION> <OPTION value=I>8</OPTION> <OPTION value=J>9</OPTION>
<OPTION value=K>10</OPTION> <OPTION value=L>11</OPTION> <OPTION
value=M>12</OPTION></SELECT> </P>
<P></P></FORM></BODY>

vsego

You gave me a fright with this big post. :-)

I've rewrote it completely, but I'd like you to have tidy code, so I'm sending it via e-mail. Please let me know if it works (I've tested it in NS 4,51 and IE 5).

And don't forget non-JavaScript browser. Build the same checking in the script that will process the data.

Btw, if you don't get a mail from me within minutes, drop me a mail (vsego@student.math.hr) or post here. I wont be on-line for much longer, but will check it tomorrow.

Oh, and anyone else wanting this code can mail me as well. :-)

Bye!

iiiiiiimike

Hi Vedran, received your e-mail, but not your rewrite. I look forward to receiving it as I was unable to utalise your previous script.
You have obviously been working hard to sort out my request- for that I thank you.

Regards
Mike

vsego

I've resent it. Did you get it?

In case you didn't, here:

<!doctype html public "-//W3C//DTD HTML 4.0 Transitional//EN">
<?php
$defOldValues = "0";
for ($i = 1; $i <= 12; $i++) $defOldValues .= ", 0";
?>
<head>
<title>Questionnaire</title>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1">
<script type="text/javascript" language="JavaScript"></script>
</head>
<body bgcolor="#ffffff">

<form method="post" name="mform">

<?php
$defaultOptions = array("a" => "", "b" => "1", "c" => "2", "d" => "3", "e" => "4", "f" => "5", "g" => "6", "h" => "7", "i" => "8", "j" => "9", "k" => "10", "l" => "11", "m" => "12");
function oneMenu($which, $options = 0) {
$name = "Vip_$which";
if (!$options) $options = $GLOBALS["defaultOptions"];
echo "<p>Option $which: <select name=\"$name\" onchange=\"noDupl($which);\">\n";
foreach ($options as $value => $description) {
echo " <option value=\"$value\">$description</option>\n";
}
echo "</select></p>\n\n";
}
for ($i = 1; $i <= 12; $i++) oneMenu($i);
?>
</form>

</body>

iiiiiiimike

I did get the code.
I know you got my "Big" mail.
I'm thinking we are not singing from the same hymn sheet.