Make A Search Function Work In A Listbox Full Of Onchange Tags?

Jun 20, 2011

I've got this listbox full of hundreds of employee names. Clicking on a name executes a function using onchange. Because of the length of the list I decided a search function would be really handy and I finally found one that works.

Now the search function, when you type in the input box, scrolls the list to the first matching entry. And that's good, that's what I wanted.

The problem comes in when you try to click on the name the search function found. Nothing happens ofcourse because the onchange tag in the list reacts to changes, not direct clicks.


The list is populated by java but for testing I disabled the function that clears the "Loading" option and I set it to selected. That way the loading option is highlighted by default and the search function is free to highlight something else, then when I click on the search result it works like it's supposed to.

But keeping a highlighted option at the top of the list for that sole purpose isn't very elegant, especially since if you click on it the onchange function tries to execute and generates errors. The only solution I can think of is to use java to generate another option way at the bottom of the list that has the selected attribute but I don't quite know how to do that.

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Onchange Listbox Fill Related Course In Second Listbox?

Sep 13, 2010

$slt ="SELECT * FROM assingment2 ORDER BY user_id asc";


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Onchange Won't Work - How To Make It Work

Mar 15, 2011

this will not work on change. also the innerhtml wont display. please help. here is the js:

function checkemail(){
if ( && document.suform.emailcheck.value)
if ( == document.suform.emailcheck.value)


and here is the html:

Re-type Email: <input type='text' class='rfield' name='emailcheck' id='emailcheck' onchange='checkemail()'></td><td style='position: relative;'><div id='wm' style=' font-size: 11PX; position: relative;'></div>

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OnChange Of Listbox To Update Link?

Jul 23, 2005

I have a PHP page that generates a list box with several options in it.

I would like to have a "view" link next to the list box. When the user
changes the contents of the list box, I would like the view link to
update to point to the image representing that selection. So for
example, if the list box held names of images I would want the view link
to always point at the correct image.

To further complicate this matter, the selections of the listbox are in
PHP variables.

I basically have little to no experience with javascript and could use
some guidance in figuring this out.

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Can't Get Regex To Work - Search() Function

Dec 14, 2005

I've been having a lot of trouble trying getting the following code to work, all the examples that I have seen tell me that it should, but it doesn't and i'm out of ideas.

if ( != -1)
alert('The cheque number is invalid.');;

What I want it to do is alert the user that the cheque number they have entered is invalid if it contains a period / full stop / dot.

The problem is that it always says the cheque number is invalid no matter what the user enters.

I have spent the last hour or two trying a number of things using just about all the regex functions and examples in the JavaScript book I have and examples from other posts on this site, but still cannot get it to work.

If you could let me know what I am doing wrong or provide me with an example of another way to do this that would be great.

Browser is Internet Explorer, have tried /D/ as the regex too, but this did not trigger the alert when a number with a dot was entered.

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Search & Remove Listbox Elements On The Fly?

Apr 6, 2011

I have a page with three identical listbox containing items in the same order. When an element is selected from any of the three lists, the script should search for the occurrence of the same element in other two lists and remove them on the fly from all the three lists.

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Search Listbox Data By Typing On Textbox

Jun 25, 2009

I have a textbox and listbox with data, I want to type in textbox and it should search/point values to listbox, I have written the same code in but unable to convert it into JavaScript. My code is as below, I can't use Ajax Listbox extender.


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Countries Listbox, For Instance If Choose Singapore Listbox It Should Display The Corresponding States Listbox Of Singapore?

Jul 6, 2006

I have countries listbox, for instance if i choose singapore listbox it should display the corresponding states listbox of singapore, if i chose anyother country it should display a label saying "ENTER STATE" followed by a blank textbox.

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JQuery :: Make A JS Function Work As A Link?

Oct 17, 2010

I'm new to jQuery, but learning fast, and loving the new functionality!I'm using a Flash upload component that all works fine, and once it's complete (file uploaded) it calls function.I'm running the Flash upload in a modal (nyroModal - very cool!). The link below does what I need it to do - navigate to a new page and re-size the modal:<a href="test2.aspx#blabla" class="nyroModal">Ajax Filtering Content #test</a>What I need to work out is how to make the JS function above work in the same way as this link. I know very little JS, but I think the 'class="nyroModal" needs to be part of the link in the function some how??

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Loop Function Not Working - How To Make It Work

Jun 8, 2009

I have a pretty simple function set up to pull XML data into my page, but there's a couple things wrong with it. I'm REALLY new to J Script and really trying my best to learn, but for some reason I'm not yet adept at googling the right results :rolleyes:At the very bottom you can see the data from the first XML entry, so it seems the function itself is working fine, but it's not looping coorectly to access all the data.Also, I want to pull it into the "shows" div of the page, but can't figure out how to put it there (seriously, I am very new with JS). The code below is not working, but the live site has it added to the body, which does show the one entry.Here's the XML function, the XML data and the HTML markup:

Shows function -

function loaddates()
var xmlData = document.getElementById("tourdates");
var newDates = xmlData.getElementsByTagName("dates");


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Alert Function Not Working - How To Make It Work

Apr 10, 2010


var timer = 0;
function SpellItOut(word)


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Onchange Tag Of A Listbox To Use The Values To Manipulate An Iframe - "can't Load Page" - Src Is Broken

Jun 16, 2011

I put the following line in the onchange tag of a listbox to use the values to manipulate an iframe:
document.getElementById('viewer').src=('Location_Files/')+(this.value)+('.htm') There it works perfectly but I wanted to do more so I decided to build a function around it:

function display()

When I put the function in the onchange tag instead, the iframe tries to work but I get a "can't load page" message like the src is broken. Now when I first made that line it took me hours to figure out that I can't use a "" because if I do it fails. So I went with "/" and that works but I wonder if that rules change when I specify it in the java script instead of in the onchange tag itself. Either way it still breaks if I try to use "".

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Make A Multi Select Listbox For Countries?

Jul 19, 2011

I need to make a multi select listbox for countries.from the countries listbox, my cities listbox will retrieve the cities of the countries selected.both of these listbox allows multiple select.

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JQuery :: Make A Function To Be Able To Change The InnerHTML Of That Div But It Didn't Work?

Jan 5, 2011

I don't really know how to say this, that's why I'm going to show you some code which will hopefully point out what I mean.This is what I wrote yesterday:

var div = $('<div></div>').attr('id','box').fadeIn(1250);

This worked well, but then I wanted to make a function to be able to change the innerHTML of that div but it didn't work.

function changeContent(content) {
var box = $('#box');


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Pop Under Make Full Scree Or Uncloseable?

Jul 26, 2011

I am currently using a pop under for my wordpress blog. It works great, however, I want to be able to make the screen fully maximized, or uncloseable.


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How To Make Item Bold In Listbox When User Click

Jan 22, 2010

I would like to do: When I click on a button, it will set the item in the listbox to be bold. But this will only happen when the user clicks on the desired item to be bold and presses the button. An alert message will occur when he/she presses the button without clicking on the item, stating that the user will need to click on the item. How should I do it in javascript?

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Game - Rock Paper Scissors - Make The Playagain Function Work

Apr 24, 2010

I have written a game of rock, paper, scissors. There are two things I would like to do here:

1. Make the playagain function work. I would like to have a variable start out as 'y', then be redefined as either 'y' or 'n' when the prompt occurs. If this is not possible, any other way to make this work would be welcome.

2. Use <div> tags and CSS to make .swf's appear and disappear accordingly.

EX: I say scissors, Computer says paper. An swf is played of scissors beating paper. When the anim is over, it disappears, and the game continues.

The Code:


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Change Window.onload Function To Make Script Work Before Website Loads?

Oct 29, 2009

The following javascript loads after the page loads. Is there a way to change this onload function and make it work as the page is loading?The javascript is meant for mousewheel scrolling for a horizontal website. The website I am using this for has a fixed width - 29000px


window.onload = function() {

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JQuery :: Can Animate Table Row To Make It Grow From Nothing To Full Size?

Jun 13, 2011

I have some jQuery that inserts rows in a table, and currently just set the font colour of the new row to a highlighted colour for a second or so, to show the added row.I would really like to be able to make the new row grow from zero height to its normal height, rather than just appear, as this woudl look nicer. Similarly, when I delete a row, instead of fading to zero opacity, then being removed abruptly (which causes the rows below to jump up),I tried this using show() and hide(), which I thought would do it, but they don't. They fade the opacity correctly, but change the height in one jump.

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Z-index And Get The Links To Work But The Image Is Full Size

May 15, 2011

I am to create 4 links on a html page that when the link is clicked it brings an image up in a certain position. When you click the second link it is to bring that image up in the same position as the first image and so on and so on. I can get the links to work but the image is full size and it is not in the position that I was expecting it to be in. Once the image is displayed it covers the links so they are not able to be used. I put all the code on one page just for testing purposes, I figred that if I could get it to work in one page splitting the code into a css page and a js page would be the easy part. I have rewritten the code with buttons instead of links and I get the same result.I think there is a problem with the css but I am not sure.


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Auto-Scroll To The Multiple Selected Item In The Listbox ListBox In C #

Nov 8, 2011

how to position selected item automatically WITHOUT SCROLLING DOWN using C#

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How Do I Make OnChange Textbox?

Jul 4, 2006

There will be 2 option value,1st is yes,2nd is no.If person select "yes" textbox will appear below selection area,if person select "no" a link will appear,and will redirect you to there when you click on it.

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Onchange Work With DOM

Jul 20, 2005

I've written some kind of menu to display a diagram with input fields
for a budget plan. A user should be able to change values, which are initially filled by
a database value, and get all corresponding values filled by the

//value given by database
showText[k].setAttribute("value", eval("liste[i][TEXT" + k + "]"));

//onchange event for the user to change the value
showText[k].setAttribute("onchange", "calculate('cost" + i + "')");

//function to recalculate corresponding values
function calculate(myId) {
if (myId == "initial") {
else {
myId = myId.slice(4);
//getParents(myId) returns corresponding values for myId
var myParents = getParents(myId);
for (var i = deep; i >= 0; i--) {
var sum = 0;
for (var j = 0; j < myParents.length; j++) {
for (var k = 0; k < children.length; k++) {
sum +=
parseFloat(document.getElementById(eval("'cost" + children[k] +

My Problem is:
IE and Netscape always use the value initially entered by the database
and not the new value entered by the user.
Is there a timing or DOM problem?

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Getting OnChange To Work With FF And IE?

Nov 2, 2011

I've developed a support page where users can drop in help tickets with javascript doing client side testing of the fields for missing data etc and php for server side handling and posting to an email address. There is also a section to add supporting images, videos etc of the bug/issue using the <input type="file" /> tag.

Although I could have done server side file size checking, I didn't want my users to wait half an hour to up load a 10Mb video just to be told it was too large to send via email.

So my client side solution was to have a function fire when a file is selected:

<input type="file" id="attachment1" name="attachment[]" onchange="findSize(1)" />

The id is name 1 because I have javascript to allow the user to add multiple "Select a file" boxes, dynamically adding 1 to the id number each time. The name is an array for the server side handler of the multiple files (if any). The onchange you see fires "findSize(attachmentRef)".

function findSize(id) {
var maxFileSize = 5242880; //5mb in bytes
var idNumber = id;
var fileInput = $("#attachment"+idNumber)[0];


This is the findSize function that feeds back to the user instantly if the file is too big for processing - saving headaches all round. I use some jQuery to work out which file input we are looking at and to test the size of the file. If the file is too big, an alert flag is written into the form to prevent the user from hitting submit (one of my client side test conditions for checking the form confirms that this flag is 1 not 0).

Issue: The code works fine on my test browser - Chrome. But in my next step test (FF 7.0.1 and IE9) nothing happens. I can locate and add a file for upload, but the onchange doesn't fire. Or is it something in my function that is causing the bug? I'm using jQuery 1.4.4 for your info.

how to implement onchange with different browsers - something about IE and FF differing in what they mean by a change and when it happens; but I admit I'm a bit lost. Can any one spell out a solution ABC fashion?

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Can't Get InnerHTML To Work Using OnChange

Jun 29, 2009

I have a select option drop down menu and I'm using onChange in order to write text in a div. But, when I test the drop down nothing is happening.

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Onchange And Onkeyup Does Not Work On IE?

Mar 4, 2011

I have client side scripting for a text box value which truncates value if user enters more than 255 characters. For this i use both onchange and onkeyUp events. I added Server side validation too(more cautious) to restrict user from continuing the page if he enters more than 255 chars. We are using this product from 7 yeras and yesterday one of the customer said that(he has a screenshot too) he saw the server side error message. this explains that my client side javascript methods doesnot fire. he is using IE browser.

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