Onchange Event For A Dropdown?

Jun 9, 2009

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.

<select id="mylist">
<option value="White">White</option>
<option value="White">Black</option>

[code]....

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Onchange And Onkeypress Event On A Select Dropdown

Jul 21, 2009

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

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Reload A Html Page OnChange Event Of Dropdown List?

Nov 25, 2009

I want to reload an html page onChange event of dropdown list and retain the old values filled in the page.

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OnChange Event - Populate Dropdown Fields Separately From Database

Dec 17, 2011

I have two drop-down fields that are populated separately from the database. Here is my HTML/PHP code
Drop-down field #1
<tr class=bodyTRstyle>
<td width="35%"><p align="left">Venue</td>
<td class=fieldTDstyle width="269"><p align="left">
<select name="VenueName" class=VenueName><option selected><?php echo $VenueName?></option

<?php
$SelectVenueQuery="select * from venue order by VenueName";
$SelectVenueResult=mysql_query($SelectVenueQuery);
while ($VenueRow=mysql_fetch_array($SelectVenueResult)){
extract($VenueRow);
echo "<option value='$VenueName'>$VenueName";}?>
</select></td></tr>

Drop-down Field #2
<tr class=bodyTRstyle>
<td width="35%"><p align="left">Results</td>
<td class=fieldTDstyle width="269"><p align="left">
<select name="GameResults" class=GameResults><option selected>
<?php echo $GameResults?></option
<?php
$ResultsQuery="select * from result order by ResultDate";
$ResultsQueryResult=mysql_query($ResultsQuery);

While ($ResultsRow=mysql_fetch_array($ResultsQueryResult)){
extract($ResultsRow);
echo "<option value='$ResultDate'>$ResultDate";}?>
</select></td></tr>

This code works well as long as the two drop-downs are independent of each other. The result table has VenueName as an element, so each venue has a set of result records in the result table. This is how I want to change it: The Venue dropdown will remain as it is. Once the Venue Name is selected I want the result dropdown to populate with ONLY the result records containing a match on VenueName that was selected in the venue dropdown. How do I do that? Is it with a onChange Event? What are the changes that need to be made? How do I communicate to the second drop-down what was selected in the Venue drop-down??

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JQuery :: OnChange Event - Web Application - Each Blur Event Makes A Call Webserver To Store Value Of Textfield

Jan 21, 2010

I'm currently facing a weird issue with the onchange event. I have a web application where each blur event makes a call the webserver to store the value of the textfield. I only want to trigger that ajax call when something has changed, so i track the onchange event on each textfield to set a flag if something has changed.

The onchange event always fires to first time when i click outside of a textfield even if i didn't change anything in the field.

I narrowed it down to the following: A prefilled textfield always fires the onchange-event the first time you leave the textfield. An initially empty textfield does not fire the onchange event.

Sample code (IE 8 on Windows 7 computer):

script:

HTML:

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Onchange With Select Tag - Dropdown Box

Aug 26, 2011

I am using the OnChange event with the drop down box populated with countries.....but only works when certain countries are chosen.

When a country is chosen the OnChange event fires, passing a variable to the same page using the location.href.

Once this is done the onload within the body tag calls the function SetFocus() to the First Name text box.....which does not always work either.

Here is the code:

Code:

HTML Code:

HTML Code:

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Dropdown Onchange To Select Mysql With Php?

Apr 9, 2009

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.

<select name="type" id="type">
<option value="1">Accessories</option>
<option value="2">Cables</option>

[code]....

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Php Is Not Function With Onchange Dropdown Menu

May 10, 2009

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.

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Selecting The First Option From Onchange Dropdown?

Jul 25, 2011

I have run into a bit of a logic problem, that I feel is fairly common.I have a dropdown list created inside a form with the following code:

Code:
<form name="chooseProv" action="" method="get">
Select a province:

[code]...

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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.

Here is the code I use:

PHP Code:

<?php 
mysql_connect("localhost", "root", "");
mysql_select_db("bestellingen");
$query = "SELECT * FROM hesk_programma ";

[Code]....

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.

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Trigger OnChange Event Without Event

Aug 22, 2006

Is there anyway to trigger an onChange event without actually clicking etc.

I want to trigger it from a method. It sounds silly but I'm taking some code over from another developer and if I could do this it would save me days of re-writing!!!

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Function With Onchange Event

Jul 23, 2005

I have an array with mysqls data. I have used this array with several text
box in a formulary.

My question is: How could i use the event onchange to make a function which
update the data of array when i would have change data in a text box.?

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OnChange Event Is Not Working

Jul 23, 2005

In JavaScripts checks for an onChange event against the value of the
textbox at the time of the last onChange event. Since an onChange
Event never fired after you changed the text first time , suppose we
put the same value in the text box then no event is fired.

If we put some other value then it became fired...
It wouldn't fire if we put the same value...

I don't want to use onBlur etc... Isthere any solution with onChange
Event...?

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Cancel OnChange Event

Jul 23, 2005

I Have a text box in a jsp that is pre populated. The text box should accept only numbers and it should be greater than a minimum value (this value depends on the user settings). If the user enters a value less than the minimum value, i should pop up an alert saying that the value
entered is incorrect and reset it back to previous correct value. How could i do it using onchange event of the text box.

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OnChange Event And Focus()

Jul 23, 2005

Am I right in assuming that you can NOT set focus() back to a field in
its onChange event? Is there another way - I have validation that I
would like to set the focus back to the invalid field onChange?

Eg:
<input type=text" name="tstfld" onChange="window.alert('Changed!');
this.focus()">

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Using Javascript In The Onchange Event

Aug 7, 2006

I'm trying to get a tick box to tick automatically when the user changes the
textfield called comm. my code is below but it doesnt work.
Can anyone see why?

function changed(x)
{
document.getElementById(x).checked;
}
<input name="changed" id="ischanged" type="checkbox" value="">
<textarea name="comm[]" rows="2" class="BodyText" style="WIDTH: 99%"
onChange="changed(ischanged)"><?php echo stripslashes($comment);
?>
</textarea>

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Add An Onchange Event To A Select Tag?

Nov 12, 2009

I am trying to add an onchange event to a select tag.

This is my code, but it does not appear to be working.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=windows-1250">

[Code]....

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Form Onchange Event?

Jan 6, 2011

I would like to use some event handling on a form, not something I have done before and looking for some assistance. Here is my code:

<select name="LocO">
<option value=""></option>
<option value="O">Outside</option>

[code]....

So what I need to happen, is based on the selection of the first selection box, some of the options of the other selection boxes should not be available.If Outside is selected, everything in LocA should be available, but only up to 4 in Loc1... and if Inside is selected, only up to E should be available in LocA and everything should be available in Loc1.

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Show Div On Onchange Event?

Mar 1, 2011

I would like to have a dropdown to only show when a certain value is chosen from another drop down.

So if in this dropdown the value ETS Rep Discount is chosen he should show the other dropdown

<div class="row">
<div class="fieldName">Discount Type</div>
<div class="fieldValue">
<asp:DropDownList ID="discountTypeDropDownList" runat="server" AutoPostBack="True"
Width="295px"

[Code]....

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Onchange Event Of Select Box?

Jun 23, 2009

I want to make one application using javacript or may be it is in ajax. Let me explain my problem: I have one select box name person which have value 0,1,2,3,4,5 . Now i want that when user will select value 1 from select box then person 1 first name , last name input type box will appear only one time in a row. and if we will select 2 from select box then two row will appear naming person1 and person2 like this: if we will not select any value by default is 0.then it will not show any row regarding person.

[Code]...

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Way To Trigger An Onchange Event From A DIV?

Mar 9, 2009

IS there a way to trigger an onchange event from a DIV,eg, I have a DIV like this

Code:
<div id="resultb"></div>
so, when i change the content on this DIV using

[code]....

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Onchange Event Will Not Fire?

Sep 22, 2011

HTML Code:
<html>
<head>

[code]....

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Onchange Event Not Being Registered?

Apr 30, 2010

for some reason the onchange event does not get called in the following code:

<form:select path="parent" onchange="theFunction();">
<form: option label="--Please Select" value="-"/>
<form: options items="${listParents}" itemLabel="description" itemValue="id"/>

[code]....

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Onchange Event With Function?

Oct 14, 2010

I'm having some difficulty in accessing an 'external' function from my onchange event. It will work when the function is included 'inline,' but it's not working when the function is 'stand alone.'Additionally, when it works, the variable isn't being passed - the alert I use says "[object Event]"

Code:
<head>
function nameTextBox2(selectBoxName)

[code]....

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OnChange Event And SelectedIndex?

Feb 10, 2011

I'm using selectedIndex to change an option in a listbox, but I'm finding that the onChange event doesn't fire unless I manually make a selection. Is there any way to effect the change by JS so that the event works?

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Create An Onchange Event?

Apr 11, 2011

I want to create an onchange event here is my code but it doesn't work

here is my code
var cell3 = row.insertCell(2);
var element2 = document.createElement("input");

[code]....

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