Onchange To Fill Second Dropdown List Doesn't Work?
Apr 16, 2009
I have 2 dropdown lists which are connected to a mysql database. When I select an item from the first dropdown list the second dropdown list should show item which are linked to the item from the first list. But the thing is I can select an item from the first one, but the second isn't showing anything.
In the mysql database I have 2 tables: hesk_programma and hesk_projecten. In table hesk_programma there are a ProgrammaID and Programma column. In table hesk_projecten there are a ProgrammaID, a ProjectNumber and a Project column.
ProgrammaID from the two tables are connected to each other, so when I select an item from the first dropdown list with the ProgrammaID AK, the second dropdownlist should only display the items with the ProgammaID AK from the hesk_projecten.
By the way, one more thing. The ProjectNumber from the hesk_projecten table should be displayed (when selecting an item in the second dropdownlist) in a input text field.
I have made a drop-down list on my html form using <select> tag. I am using a onchange event for this select tag. My problem is that the onchange event triggers only when I use the mouse to change the value to drop-down list. When I use tab key to focus on the list and then change the value using up-down keys, the onchange event does not get triggered.
Wrote what I though would be a simple script to convert Fahrenheit to Celsius, feet to meters... and vice versa. It uses onchange="calculate(this)" in the input fields, so when the individual enters a number and hits tab or enter it automatically calls the calculate() function and does the needed conversion. I'm passing (this), 'this' being the input field, and calculate() pulls out the needed data for the conversion.
It works great in Firefox. But in IE or Opera, the calculate() function never even gets called. I've searched for an answer, but to now avail. I haven't written much JavaScript and am not entirely sure what's causing the problem. Kinda makes me think of Java, where if you want to use action listeners, you need to first instantiate a listener object. Is there somekinda event listener in JavaScript that Opera and IE want instantiated? Here is my code in it's entirety.
I am trying to include two functions in an onchange when the user selects a new value from a select list: It is a quite big form form - There are one select list, when changed - TWO other fields in the form needs to change accordingly: I put the information back using ajax and place it within a <span id="blah"></span>; I have checked the span ids, and they are correct! Unfortunately, the second function disables the first one This is the select list with the onchange functions:
I have a mysql database (name) which helds 3 fields, id, naam, email. In php I've made the connection and create a selection menu and with javascript I was able to display, (when I selected for example "Bas" in the selection menu), bas his name into a first input text field. Now a couple of things I still want but can't seem to get it right.
First: I also want to display "bas" his email address in a second input text field. (the database contains more names, but this an example).
Second: The selection menu starts with the first name in the database, but can I make it for example "Select name" as beginning.
What im trying to do is for each item selected from the drop down, display its value in a text box (GAC). I have attached a picture of the image to clarify.
The drop down items are populated from a database, and each item has an associated GAC value. The remaining inputs are user supplied and all the inputs including the drop down item and its value are is stored in a different table in the database.
I know very little javascript, I am more familiar with php. I am working with javascript code, php/mysql backend and smarty templates. I am trying to get the textfield box to update with a variable from the database based on the selection from the drop down field. My dynamic drop down selection works fine, it is pulling the data from the database (example:$item[i].PARTS_RATE_ID}) just fine. But I want the textfield ('parts_price['+iteration+']') to dynamically show the $item[i].PARTS_RATE_COST from the database (in the parts section), associated with the $item array from the "parts description".
OnChange, I want to invoke a function that auto populates the rest of the SELECT fields in the form. The select boxes will vary in quantity as the page is dynamic, but the values are always the same (like the code above).
i am writing a script that will update a dropdown list based on the selection of a previous list. the script is run by a PHP script, so instead of posting the PHP, i will post an example client-side script. the hierachy is: category, sub category, brand (but sometimes there exists no sub category and the PHP script queries and adds brands instead) everything works correctly, except for one major issue: you can not change the selection of the third (brand) box this could be an easy fix for some coders, but i am not experienced in javascript and could really use some help. here is an example script, sorry it is so long
I have been struggling on a bit of code for a while now. I need to populate a second drop down list (Region) based upon the selection of the first (County).I have found a piece of code that works on its own and have adapted to suit my needs - see below. However, when I drop it into my main page the javascript is not working. It's because of the formObject but I just don't know enough to resolve this! Furthermore, I need the textboxes the user has already completed in the form to retain their value once the javascript kicks in as the completed form will submit to a database.This piece of code is working well . . . .
<?php
$link = mysql_connect('myhost', 'myusername', 'mypassword') or die('Could not connect: ' . mysql_error()); mysql_select_db('mydatabase') or die('Could not select database');[code]......
I am trying to construct a Jukebox for my website. I have spent considerable time all over the WEB and at this forum which addressed the issue in a 50 page thread. Please see: [url]
I got a lot of ideas from this thread but still cannot figure a way to do the following within the Jukebox. These are my main two questions for everything below:
1.How can I have the Jukebox cycle through all tunes and then start over from the beginning?
2.How can I allow the user to select a tune from a list but not a drop down list, have the Jukebox start from the users selection and then play all songs to the end. Then as in #1, start over from the beginning?
Per this thread I came away with basically two ways to assemble the jukebox. One uses links in a drop down list which the user can choose from. The other is to use an .m3u playlist. The user can only select a playlist from the drop down.
Below, I have included the code for each Jukebox. To see the Jukeboxes in action please go to my website where I have posted some test pages exhibiting the jukeboxes that I am referring to.
The following is the Jukebox which utilizes an .m3u playlist. If I end up using this idea I would like the tunes in the .m3u playlist to be displayed and allow the user to be able to choose a tune in the list. Then have the list play to the end of all tunes in the list. Then start over from the beginning of the list. After this code is the .m3u playlist.
Go to url removed and click on the link that says:
Jukebox utilizing an .m3u playlist:
Here is the .m3u playlist for the above code:
The following code is for the Jukebox that has a list of links in a dropdown list. If I go with this idea, I would like for the list not to be a dropdown list but just a list of tunes. The user should be able to click on any tune in the list and the player should start from that point, play all the remaining tunes in the list and then start from the beginning.
Go to url removed and click on the link that says:
Another idea I found on the WEB also uses an .m3u playlist. The good thing about it is that it lists all the tunes in the playlist which the user can then select from. This jukebox calls up an entire Windows Media Player. If I was to use this idea I would like to be able to disable the left side of the player where the user has options such as burning to CD, Media Guide, Radio Tuner etc¦
Go to url removed and click on the link that says:
I have a drop down list in html which contains 3 items; Black, white,blue..If i select "Black", a pop up window should come up. (Alert or confirm)JS and need to complete My academic project work.
This is a makeshift sort function for a table. I want to replace a div contents with a javascript function call. It works fine if I define the individual case, but the general case doesn't work. The problem lies with the +divHold+ part. It never converges to the passed value on the 2nd iteration. This is my Div:
I am trying to create a dropdown that selects mysql with php. For example I have two select dropdowns the first with types and second with products. So when the types select is click the products from that category are listed in the product select.
i need to display selected item from dropdown menu into text box. what i want to do is when user select the item it will display on textbox call programme (java script) and also when button search is click it will display the total number of particular programme (php). for now, selected programme is function but the other one is not.
I have a select dropdown which has two events an onchange and onkeypress. My problem now is when I use the keyboard arrows to select an item from the list in a select drop down the onchange is selected(invoked) before I even reach the second item in the list when using opera and IE but working fine with Firefox and chrome.The onblur event does not work either because the focus must be set to following tag
this will not work on change. also the innerhtml wont display. please help. here is the js:
function checkemail(){ if (document.suform.email.value && document.suform.emailcheck.value) { if (document.suform.email.value == document.suform.emailcheck.value)
alright, im working on a page that has a drop-down menu in it...it uses the onChange event to trigger the different links (only one at the moment, but still)...and now XHTML doesnt validate it as a recognizable attribute...so is there some way to somehow target the drop-down menu's onChange event from a separate .js file? heres the basic code:
<html><head><script type="text/javascript"> function recalc() { alert ('Entering recalc().'); }
[Code]....
The first example works, which shows that the recalc function can be called. The second example works, which shows that onchange will trigger an alert box. BUT, the third example doesn't work. Why can't I trigger a call to the recalc function from the onchange event?
The above 3 code postings are the entire programs. Nothing has been left out or modified.
