JavaScript - Populating No. Of Combo Box 1 By1 In Javascript

Hi all,


I have a problem here with my coding. I want to have three levels combo box. However the second level is not populating the values, therefore the third level cannot be populated also. I have attcached my codes here. Pls have a look and tell me where is my error.

Thanks,

Breentha

Hello

I'm using the combo box selection menu by Elviro Mirko from this site (http://www.javascriptkit.com/script/...plecombo.shtml)

I have made amendments to show my own data, however what I would like to happen is if the user selects from the top combo only, then all the records would be shown, whereas selecting from the second combo merely 'drills down' and shows the records required. - Hope that makes sense.

The code is as follows:

Code:

// first combo box

	data_1 = new Option("Douglas - DIS", "$");
	data_2 = new Option("Douglas - COE", "$$");
	data_3 = new Option("Peel - DIS", "$$$");
	data_4 = new Option("Peel - COE", "$$$$");
	data_5 = new Option("Ramsey - DIS", "$$$$$");
	data_6 = new Option("Ramsey - COE", "$$$$$$");
	data_7 = new Option("Castletown - DIS", "$$$$$$$");
	data_8 = new Option("Castletown - COE", "$$$$$$$$");		
// second combo box

	data_1_1 = new Option("Registry Office Douglas", "-");
	data_1_2 = new Option("Broadway Baptist Church Douglas", "-");
	data_1_3 = new Option("Finch Hill Congregational Church Douglas", "-");
	data_2_1 = new Option("St Thomas's Church", "--");
	data_2_2 = new Option("St Barnabas Church", "--");
	data_2_3 = new Option("St George's Church", "--");

The HTML code is as follows:

Code:

<select name="combo0" id="combo_0" onChange="change(this);" style="width:200px;">	
			
			<option value="">Select a Register...</option>
			<option value="Douglas - DIS">Douglas - DIS</option>
			<option value="Douglas - COE">Douglas - COE</option>
			<option value="Peel - DIS">Peel - DIS</option>
			<option value="Peel - COE">Peel - COE</option>
			<option value="Ramsey - DIS">Ramsey - DIS</option>
			<option value="Ramsey - COE">Ramsey - COE</option>
			<option value="Castletown - DIS">Castletown - DIS</option>
			<option value="Castletown - COE">Castletown - COE</option>
			

			</select>
<BR><BR>
			<select name="combo1" id="combo_1" onChange="change(this)" style="width:200px;">
			<option value="">Select a venue...</option>
			
			</select>

the link for the actual site is

http://www.manxbmd.com/cgi-bin/db.cg...m;db=marriages

If you choose Douglas-COE and search, then 0 records are found, if you choose Douglas-COE followed by St Thomas's then still 0 records are found but if you search the surname Allitson you'll see that there is a record there.

I'm not sure where I've gone wrong - I'm completely new to Javascript.

Any suggestions welcomed.

regards

Pendle

Hi Everybody

This is probably a very commonly asked question, however after much searching online I can't seem to find a straightforward answer. If anyone knows the code or a link to a place with a simple example it would be great.

What I have got is a form that a user has to fill out and submit (when validated all variables are stored in a session and emailed after multiple forms are completed), currently I have radio buttons, text boxes and a combo box/ drop down list (for location). All parts are working fine and validating fine. My problem is to do with the combo box//ddl. I have successfully validated the ddl so the user must select a location onsubmit and it is added to session and passed fine.

At the moment the ddl only has cities or towns in it however as I would like to include different states and possibly different countries I need a code that validates the state first and then only gives the cities/towns that are in that state (otherwise my ddl would be to large). I can do this with links however I can't seem to do it in a form.

I am trying to do it this way

DDL has list of all states that on mouseover/ onclick the list is revealed. onclick of a specific state populates another ddl with only the cities cities/ towns that are in that state and onclick of specific city selects the location whereby onsubmit the location is stored in the the session for submission by email

Thanks in advance for your help

I still have the following two major issues. 1) Firstly I need to be able to send the selection from the second combo box by php. 2) secondly I need the combo box to appear within the table. (I thought this should be easy, but for the life of me cannot figure out how to get the dynamic combo into my table inside the form)

I have managed to send the selection from the first combo box with the form and also I can send a selection from the second combo, however onsubmit regardless of what is selected in the second combo box it simply sends the last option not the one selected. I have spent many hours trying to figure out why this is the case to no avail.

I have included my code for anyone who may be able to help. Lastly when I have figured out these 2 (with a little help) I should be able to sort out the validation by myself. Please ignore any code that is not relevant

<html>
<head>

<script type="text/javascript">

var this1;

window.onload = function() {
if (!document.all) document.captureEvents(Event.CHANGE);
document.getElementById('myddl').onchange = readDDL1; }

function readDDL1() {
var ddlobj = document.getElementById('myddl');
var currentSelection = ddlobj.options[ddlobj.options.selectedIndex].value;
if (currentSelection == '') currentSelection = ddlobj.options[ddlobj.options.selectedIndex].text;
doDDL2(currentSelection);
}

function doDDL2(ddl1Selection) {

var existingDDL2;
if ((existingDDL2 = document.getElementById('myddl2')) != null) existingDDL2.parentNode.removeChild(existingDDL2);

var ddl2Options;
switch (ddl1Selection) {
case "Western Australia":
ddl2Options = ["Please Select A Location", "Karratha", "Perth"]; break;
case "Queensland":
ddl2Options = ["Please Select A Location", "Brisbane", "Gold Coast"]; break;
}

if (typeof ddl2Options == "object") {
ddl2 = document.createElement('select');

ddl2.id = "myddl2";
var forVar;
for (forVar in ddl2Options) {
var newOption = document.createElement('option');
newOption.appendChild(document.createTextNode(ddl2Options[forVar]));
ddl2.appendChild(newOption);


}
document.body.appendChild(ddl2);

}

document.testform.this1.value = ((ddl2Options[forVar]));

}



function checkFrequency() {
return ShowResults();

}


function validate(){
var digits="0123456789"
var temp

if (document.testform.location.selectedIndex == 0) {
alert("Please Select a State");
return false
}

if (document.testform.location2.selectedIndex == 0) {
alert("Please Select a Location");
return false
}

return true
}




</script>

<style type="text/css">
.td_freq { background-color:yellow;
height:40px;
text-align:center;
}
.td_sev { background-colorink;
height:40px;
text-align:center;
}
.td_wi { background-color:lightgreen;
height:40px;
text-align:center;
}
</style>

</head>
<body>

<FORM name="testform" action='./emlapd.php' method='post' onsubmit="return checkFrequency()">

<input type='hidden' name='this1'>

<table align="center" border="1" width="40%">

<tr><td><b>Current Worksite State:</b><font color="red">*</font></td>
<td>
<select name="location" width='53' id="myddl">
<option value="0">--- Please Select Your State --- &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;& nbs p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;& n bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;& nbs p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</option>
<option value="Western Australia">Western Australia</option>
<option value="Queensland">Queensland</option>

</select>

</td></tr>
<tr><td><b>Location:</b><font color="red">*</font></td>
<td>

</td></tr>

</table>


<tr>
<th colspan="2">
<input type="submit" name='submit' value="Submit" onclick= "return validate()">
</th>
<td colspan="10">&nbsp;</td>
<th>
<input type='reset' name='reset' value='Clear Form'>
</th>
</tr>
</table>

</FORM>
</body>
</html>


Thankyou very much to everyone that may help


So I can place the DDL inside the form, however it places it at the end of the form. I want it somewhere in the middle (immediately following first combo box)

My other main issue is irregardless of the selection it simply posts the last option from the DDL not the one selected. Therefore I still want the second combo box to appear immediately below the first combo box and whatever option is selected from the second combo box I want to be posted with the rest of the form data.

If you have any other ideas that would be great

Obviously the reason I am still getting the same incorrect post is because the variable posted is still this1 from my code which reads the last value from the DDL. I have tried with all other variables to send as well ie ddl2 however still can't seem to send the selection.

So in its current state how can I send the selection and place the second DDL within the form??


Thank you

Hello.

I have a problem here

I have this menu:
Code:

<script language="JavaScript">
<!--
function mmLoadMenus() {
  if (window.mm_menu_0516213335_0) return;
  window.mm_menu_0516213335_0 = new Menu("root",160,18,"Verdana, Arial, Helvetica, sans-serif",12,"#000000","#ffffff","#f7c68c","#214a6b","center","middle",3,0,1000,-5,7,true,true,true,0,false,true);
 mm_menu_0516213335_0.addMenuItem("Item5","location=''item5.html'");
  mm_menu_0516213335_0.addMenuItem("Item6","location=''item6.html'");
   mm_menu_0516213335_0.hideOnMouseOut=true;
   mm_menu_0516213335_0.menuBorder=2;
   mm_menu_0516213335_0.menuLiteBgColor='#294a63';
   mm_menu_0516213335_0.menuBorderBgColor='#102939';
   mm_menu_0516213335_0.bgColor='#101008';

  window.mm_menu_0506211449_0 = new Menu("root",160,18,"Verdana, Arial, Helvetica, sans-serif",12,"#000000","#ffffff","#f7c68c","#214a5a","center","middle",3,0,1000,-5,7,true,true,true,0,false,true);
  mm_menu_0506211449_0.addMenuItem("Item1","location='item1.html'");
  mm_menu_0506211449_0.addMenuItem("Item2","location='item2.html'");
  mm_menu_0506211449_0.addMenuItem("Item3","location='item3.html'");
  mm_menu_0506211449_0.addMenuItem("Item4","location='item4.html'");
   mm_menu_0506211449_0.hideOnMouseOut=true;
   mm_menu_0506211449_0.menuBorder=2;
   mm_menu_0506211449_0.menuLiteBgColor='#294a63';
   mm_menu_0506211449_0.menuBorderBgColor='#102939';
   mm_menu_0506211449_0.bgColor='#101008';

  mm_menu_0506211449_0.writeMenus();
} // mmLoadMenus()

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
//-->
</script>
<script language="JavaScript1.2">mmLoadMenus();</script>

And I have a database with 3 fields:
id, name and contents.

These are the pages.

Basically I want to do a select on the mysql database using PHP and populate the menu from the database.

Can you tell me how to do this?

Thanks

Hi, I'm Sam and I'm new to this forum. I have a few question about double combo box. Before I get down on details I have to confess that my knowledge about javascript is almost zer0 so if you're posting any answer please elaborate.

I've found this code somewhere online and I'd like to make some changes to this code. I've searched everywhere but couldn't find any answer yet.

As you can see in this code, the javascript function can open a page in iframe once the user clicks on "Go".

I'd like to know how to add links to the options in the first box so that it can open an iframe by itself, plus loads the next box , so when the user selects an option from the first box, the first box opens a page in iframe then loads the options for the second box.

There should be two iframes side by side, the first iframe to open a page for the first box once the user selects the options in the box and the second ifram opens a page for second box once the user clicks on the "go".


I just don't know how to add links to the options in the first box.

Here's the code:
Code:

<html>
<head>
</head>

<body>



<form name="doublecombo">
<p><select name="example" size="1" onChange="redirect(this.options.selectedIndex)">
<option>Technology Sites</option>
<option>News Sites</option>
<option>Search Engines</option>
</select>
<select name="stage2" size="1">
<option value="http://cssdrive.com">CSS Drive</option>
<option value="http://www.news.com">News.com</option>
<option value="http://www.wired.com">Wired News</option>
</select>
<input type="button" name="test" value="Go!"
onClick="go()">
</p>

<script>
<!--

/*
Double Combo Script Credit
By JavaScript Kit (www.javascriptkit.com)
Over 200+ free JavaScripts here!
*/

var groups=document.doublecombo.example.options.length
var group=new Array(groups)
for (i=0; i<groups; i++)
group[i]=new Array()

group[0][0]=new Option("CSS Drive","http://cssdrive.com")
group[0][1]=new Option("News.com","http://www.news.com")
group[0][2]=new Option("Wired News","http://www.wired.com")

group[1][0]=new Option("CNN","http://www.cnn.com")
group[1][1]=new Option("ABC News","http://www.abcnews.com")

group[2][0]=new Option("Hotbot","http://www.hotbot.com")
group[2][1]=new Option("Infoseek","http://www.infoseek.com")
group[2][2]=new Option("Excite","http://www.excite.com")
group[2][3]=new Option("Lycos","http://www.lycos.com")

var temp=document.doublecombo.stage2

function redirect(x){
for (m=temp.options.length-1;m>0;m--)
temp.options[m]=null
for (i=0;i<group[x].length;i++){
temp.options[i]=new Option(group[x][i].text,group[x][i].value)
}
temp.options[0].selected=true
}

function go(){
document.getElementById("search").src=temp.options[temp.selectedIndex].value
}
//-->
</script>

</form>

<iframe id="search" name="photos_frame" src="my_photo_page_needs_to_load_into_this_frame.htm" width=800 height=400 marginwidth=0 border=1 marginheight=0 hspace=0 vspace=0 frameborder=0 scrolling=no></iframe>


</body>
</html>