For,s

second form depenent on first

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6 Replies - 4172 Views - Last Post: 11 October 2002 - 05:57 AM Rate Topic: -----

#1 j4h2e   User is offline

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For,s

Post icon  Posted 10 October 2002 - 11:26 AM

:P

Ok...I have a question....If wanted to set up a couple drop down selections forms, and have the options within the second one be dependent upon what is selected in the first form, How could I do this?

EX. in the first menu I want computer makes (dell,compaq, ext) I want the second menu to return the models for the make of computer they selected.... :blink:

I have been trying to accomplish this with no success...can somone help me....Please... :crazy:

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#2 SlashRaid   User is offline

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Re: For,s

Posted 10 October 2002 - 11:32 AM

Does it have to be ASP or could you use a Javascript?
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#3 j4h2e   User is offline

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Re: For,s

Post icon  Posted 10 October 2002 - 11:35 AM

:P

Java's Ok :rolleyes:

all the pages I've seen that do this are asp pages though so I thought that it would have to be accomplished through asp :lol:


:)
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#4 Amadeus   User is offline

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Re: For,s

Posted 10 October 2002 - 11:48 AM

j4h2e, on Oct 10 2002, 02:35 PM, said:

all the pages I've seen that do this are asp pages though so I thought that it would have to be accomplished through asp :lol:

ASP pages can contain Javascript, no troubles. Just remember to bracket any functions in the proper javascript tags, and your fine.
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#5 SlashRaid   User is offline

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Re: For,s

Posted 10 October 2002 - 12:48 PM

Sorry for my delay.

Here is a simple form along the lines you had talked about:
<HEAD>

<script LANGUAGE="Javascript">
var arrItems1 = new Array();
var arrItemsGrp1 = new Array();

arrItems1[3] = "Gaming";
arrItemsGrp1[3] = 1;
arrItems1[4] = "Pro";
arrItemsGrp1[4] = 1;
arrItems1[5] = "DV";
arrItemsGrp1[5] = 1;

arrItems1[6] = "Presario";
arrItemsGrp1[6] = 2;
arrItems1[7] = "Evo";
arrItemsGrp1[7] = 2;

arrItems1[0] = "Dimension";
arrItemsGrp1[0] = 3;
arrItems1[1] = "Inspiron";
arrItemsGrp1[1] = 3;
arrItems1[2] = "OptiPlex";
arrItemsGrp1[2] = 3;

var arrItems2 = new Array();
var arrItemsGrp2 = new Array();

arrItems2[21] = "8250";
arrItemsGrp2[21] = 0
arrItems2[22] = "4550";
arrItemsGrp2[22] = 0

arrItems2[31] = "8200";
arrItemsGrp2[31] = 1
arrItems2[34] = "2650";
arrItemsGrp2[34] = 1

arrItems2[35] = "GX260";
arrItemsGrp2[35] = 2
arrItems2[36] = "GX50";
arrItemsGrp2[36] = 2

arrItems2[99] = "2001DV";
arrItemsGrp2[99] = 5
arrItems2[100] = "Rosewell";
arrItemsGrp2[100] = 5
arrItems2[57] = "MJ-12";
arrItemsGrp2[57] = 5

arrItems2[101] = "Hive-Mind";
arrItemsGrp2[101] = 3
arrItems2[102] = "Area 51";
arrItemsGrp2[102] = 3

arrItems2[103] = "MJ-12";
arrItemsGrp2[103] = 4
arrItems2[104] = "MJ-12 DDR";
arrItemsGrp2[104] = 4

arrItems2[105] = "8000";
arrItemsGrp2[105] = 6
arrItems2[106] = "6000";
arrItemsGrp2[106] = 6
arrItems2[107] = "4000";
arrItemsGrp2[107] = 6

arrItems2[200] = "300";
arrItemsGrp2[200] = 7
arrItems2[201] = "500";
arrItemsGrp2[201] = 7


function selectChange(control, controlToPopulate, ItemArray, GroupArray)
{
  var myEle;
  var x;
  // Empty the second drop down box of any choices
  for (var q=controlToPopulate.options.length;q>=0;q--) controlToPopulate.options[q]=null;
  if (control.name == "firstChoice") {
    // Empty third drop down box of any choices
    for (var q=myChoices.thirdChoice.options.length;q>=0;q--) myChoices.thirdChoice.options[q] = null;
 }
  // ADD default choice just in case there are no values
  myEle = document.createElement("option");
  myEle.value = 0;
  myEle.text = "[SELECT]";
  controlToPopulate.add(myEle);
  // Now loop back through the array of individual items.
  // Any containing the same children id are added to
  // the second dropdown
  for ( x = 0; x < ItemArray.length; x++ )
    {
      if ( GroupArray[x] == control.value )
        {
          myEle = document.createElement("option");
          myEle.value = x;
          myEle.text = ItemArray[x];
          controlToPopulate.add(myEle);
        }
    }
}
//  End -->
</script>

</HEAD>
<BODY>

<form name=myChoices>
<table align="center">
<tr>
<td>
<SELECT id=firstChoice name=firstChoice onchange="selectChange(this, myChoices.secondChoice, arrItems1, arrItemsGrp1);">
	<option value=0 SELECTED>[SELECT]</option>
	<option value=1>Alienware</option>
	<option value=2>Compaq</option>
	<option value=3>Dell</option>
</SELECT>
</TD><TD>
<SELECT id=secondChoice name=secondChoice onchange="selectChange(this, myChoices.thirdChoice, arrItems2, arrItemsGrp2);">
</SELECT>
<SELECT id=thirdChoice name=thirdChoice>
</SELECT>
</TD>
</TR>
</TABLE>
</form>
Copy and paste that and see if you can work it for your needs. ;)

Sorry it's not the best display of array usage, but I was in a bit of a hurry and trying to make it to the subject similar to what you had discussed.
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#6 j4h2e   User is offline

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Re: For,s

Posted 10 October 2002 - 01:03 PM

Thanx SlashRaid... ;)

I allways appriciate your assistance...
:rolleyes:

I also found a similar code @ http://www.javascrip...ion.html#source :ph34r: that is set up the same way your code is....
This proves it works, and I really appriciate your help..

Thanx again.......

:pirate:
J.
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#7 SlashRaid   User is offline

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Re: For,s

Posted 11 October 2002 - 05:57 AM

If I remember correctly, that may be where I orginally got it from. It's been a few months and was set different with about 20 selection boxes for what I needed it for.I was able to find that script on a floppy I had started with before adding all my arrays and choices. So there real credit for the code should go to Mr. Berry there.

Hope it works for you. B)
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