4 Dynamic Drop Downs, Any Tutorial Or Link?

Sep 10, 2007

I want to make a dynamic 4 drop down menus with AJAX and PHP/mySQL, like this:

Category->dynamic subCategory

County->dynamic cityCounty

Is there any good tutorial that can teach me how to do this? I managed
to have that Category dynamicly loads subCategory and that County
dynamicly loads cityCounty but I ran into a problem when I already
picked subCategory and than went on to pick a County, because of the
reload.this function in javascript my subCategory gets lost. Can anyone
point me in right direction?

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May 31, 2006

Is there a tutorial on dynamic SID generation?

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Mar 30, 2004

Ok, I just tried to make this post and got logged out when I hit preview, so this time around it's gonna be much shorter as my patience has run out.

...Over at gazingus.org there is a sweet little bit of code that uses the DOM to make dropdown menus.

I have altered the code (see below) to make the menus appear on the first mousover instead of the onClick event.

However, they never go away. I'm trying to figure out how make the last menu open disappear after a short delay. I've already tried this

actuator.onmouseout=function(){

if(currentMenu){
setTimeout('currentMenu.style.visibility = "hidden";',2000);
}
}
However, it doesn't work. The delayed code events pile up on each other if menus are continually moused over and out. (Say the user can't decide what menu they're looking for and runs the mouse left...then right...then left...)

The result is that after the 2000ms the menus close instantly....

/*
* menuDropdown.js - implements an dropdown menu based on a HTML list
* Author: Dave Lindquist (http://www.gazingus.org)
*/

var currentMenu = null;

if (!document.getElementById)
document.getElementById = function() { return null; }

function initializeMenu(menuId, actuatorId,position) {
var menu = document.getElementById(menuId);
var actuator = document.getElementById(actuatorId);

if (menu == null || actuator == null) return;

if (window.opera) return; // I'm too tired

actuator.onmouseover = function() {
if (currentMenu == null) {
this.showMenu(position);
}
else if(currentMenu) {
currentMenu.style.visibility = "hidden";
this.showMenu(position);
}
return false;
}

actuator.onblur = function() {
if(currentMenu){
setTimeout('currentMenu.style.visibility = "hidden";',2000);
return false;}}


actuator.showMenu = function(position) {
if (document.all){
menu.style.left = this.offsetLeft + 80 - position + "px";
}
else {
menu.style.left = this.offsetLeft - position + "px";
}
menu.style.top = this.offsetTop + this.offsetHeight + 2 + "px";
menu.style.visibility = "visible";
currentMenu = menu;
}
}

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Sep 6, 2005

i have a soccer-site, on which of course,
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Now the admin has to be able to set the number
of goals, and then select who scored what goal.

I want a system where one can put a number in
a textfield (NaN would return an error).
Say the admin enters Ɖ'. Then three dropdown
lists appear below that field, in them are the
players.
If he turns Ɖ' (goals) into ƈ', the lowest one
has to be deleted, but the upper two have to stay,
with an unchanged (already selected) value ...

Preferrably cross browser. I just can't seem to
figure out, i've tried loads of innerHTML and
document.write(), both didn't give me what i
wanted (yet).

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Aug 31, 2004

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Jul 14, 2005

what i'm looking to do is have a drop down menu, where when an option is selected it displays a description elsewhere on the screen and opens up another drop down menu along side the first one, then i'd like the second one to do the same as the first and finally i'd like the third one to just display a description.

but i'm not sure how to do it? javascript? if so what's it called so i can look into it/a tut on it.

so drop down 1 is either poetry or prose
down down 2 is for poetry
+ narrative
+ nature
+ romantic

but for prose it's
+ fiction
+ non-fiction

but that's not just it, if you select poetry in drop down one, i want it to display a description (that's in the description="" of the option) and i want that the same for each different menu, though to appear in different position for each menu Code:

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Sep 26, 2006

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Jul 23, 2005

I am trying to create a webpage and it would be obvious to anyone who
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I know almost nothing about webpages, but am happy with all but a few
bugs in my page.

I have read many posts about opening drop-downs in new windows, and
have spent hours looking over my source code to see what I have done
wrong.

My links open in the same window like I want, but ALL of my drop-downs
open in a new window!

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Jul 23, 2005

I have been asked to produce a web catalogue of services and associated
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My initial thought was to use a set of cascading drop downs, select an
option from the first fills the available options for the second and so on.
Given the current buzz about Ajax this would seem an opportunity to try out
some of its features.

Could anyone point me at an example of what I am trying to do? For
information, the target web server environment is Apache with both mod perl
and mod php being available.

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Oct 19, 2007

If any of you have a Google home page ...

http://www.google.com/ig

you'll notice that when you click on the drop down arrow graphic for
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module around the page and the drop down menu always appears under the
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Does anyone have any recommendations as the best way to do this? I am
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i'm trying to make a form where if 2 particular options are chosen from 2 dropdown boxes, it puts a value in a text field. so far i've got

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Code in Head Tag
<script language ="javascript">
function abc()
{
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[Code]...

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My drop downs look like this:

HTML Code:

PHP Code:

Here's how it supposed to work...

When an admin has used the first drop down to pick the value of the "first" variable, the string is updated and redisplayed like so:

Next, when an admin has used the second drop down to pick the value of the "second" variable, the string is updated and redisplayed like so:

Finally, when an admin has used the third drop down to pick the value of the "third" variable, the string is updated and redisplayed like so:

That's all I have. I'm stuck. I'm guessing I need an "onChange" event with each drop down? Also, I need to refresh the "makeTheLink" div when an onChange event fires? How do you tie all of this together? Is self rolled JavaScript the best solution or would jQuery be better?

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Drop Down 2:

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<html>
<head>
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<script>

[Code]...

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What i'm trying to do is:

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2. Then taking the sub totals added them to the total products

3. Need the total # of products that was selected as well

4. Then from the total products, want to Added subtract cancelled Divide Number of products = total net (1.34% = 134% w. the decimal moved over 2 spots to the right)

Link: [url]

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Below is the code:

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I've been beating my head against a wall for a few days trying to get this working. I'm trying to create a dynamic menu where a user selects one item and another select list is shown, then another and another (and so on). Here is my JS, it *should* be taking the ID of the div, comparing it to the selected value and then showing another div by settings it's class property to visible:

[Code]...

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