On Change Event And Selection
Aug 21, 2006
I am trying to but a function together whereby the user max a selection
and the selection appears in a box on the screen:
function goThere(){
var list = document.forms[0].toy1;
location.href=list.options[list.selectedIndex.value];
}
<select name=toy1 id=toy1 onchange="goThere(this);>
<option1. .....
<select name=toy2 id=toy2 onchange="goThere(this);>
<options>.....
for some reason it isn't working. Could someone steer me in the right
direction.
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Aug 16, 2009
Demo at [URL]
Description: If you perform any selection, alert will be triggered. It fails in IE.
Code: [URL]
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Feb 18, 2010
I would like to change selection of
[Code]...
is it possible? I try with this: $('id_select').val(4); // but with no results, I can read the value from select with val, but I can not to set it? How to do it?
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Feb 15, 2009
Basically I have a form, with two simple select menus, both identical except for different name values to post:
HTML Code:
<p>Make current?</p>
<select name="is_current">
<option value="yes">Yes</option>
<option value="no">No</option>
</select>
<br />
<p>Put in list?</p>
<select name="in_list">
<option value="yes">Yes</option>
<option value="no">No</option>
</select>
Some PHP code governs whether the "yes" or the "no" option in either menu gets the 'default' "selected="selected" showing, based on database information. For instance, in the first menu, if the page deals with a case where the the first "is_current" value is indeed current, then the PHP code will write the default "selected="selected" for "yes":
HTML Code:
<select name="is_current">
<option value=yes" selected="selected">Yes</option>
<option value=no">No</option>
</select>
If the page deals with a case where the value isn't current, the selected="selected" code will be written for the "no" value instead. The same goes for the second select menu. Now, the logic of my situation requires that, if the user selects "Yes" in the first "is_current" drop-down, then only "Yes" should be available to select in the second "in_list" menu. Anyway, I don't know javascript very well, but I found a function that seemed to be able to do this.
Code:
<script type="text/javascript">
(function () {
function updateLevel() {
var limit = Number(this.value);
// find the next select element
var selects = this.form.getElementsByTagName('select');
var select;
for (var i = 0; i < selects.length; i++) {
if (selects[i] === this && selects[i+1]) {
select = selects[i+1];
break; .....
(Apparently the script has to be put or called just before the </body> tag at the end of the page.) Then the select menus are recast as:
HTML Code:
<p>Make current?</p>
<select name="is_current" id="in_list">
<option value="1">Yes</option>
<option value="2">No</option>
</select>
<br />
<p>Put in list?</p>
<select name="in_list">
<option value="1">Yes</option>
<option value="2">No</option>
</select>
Now this appears to work, up to a point. If the user selects "Yes" for the first "is_current" selection, then only "Yes" becomes available for selection in the second "in_list" menu. A posted value of "1" represents "yes", and a value of "2" represents "no". Except, in Firefox, the javascript somehow overrules the default selected="selected" code. That is, the source code in the browser is correct, but the javascript draws it incorrectly.
For instance, say the database/PHP has drawn selected="selected" for the value "yes" in the second menu. Even though I can see that the source code is OK in the browser, the javascript will make the browser show a "No" selection as the initial default. This happens in Firefox, though not in Safari, and I haven't tested other browsers yet. This may be obvious but I'm not sure of javascript.
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Aug 13, 2011
look at this script :
$(function(){
$('input').bind('keypress',null,b).bind('change',null,a);
});
function a(){
[Code].....
this script bind both keypress and change of the text box to functions b and a. at keypress event handler if user type a char on input box the value of input box change to x and the user char discarded. In this case we expected to run the onchange (change) event because the textbox value is changed BUT this doesn't happen.
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Nov 29, 2011
I am running across an odd problem where chrome does notrecognizethis function but IE9 does. Its a basic drop down where I'm trying to capture the click event:
$(document).ready(function () {
$("#PagerDropDown option.AdminPageOption").click(function () {
alert("new page item clicked");
});
});
The click event here is not getting captured by chrome at all :( Is there a work around for this, is this a bug with chrome?
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Mar 11, 2011
suppose i have a html page with text, links and what ever else a page contains. On selection of Text on the html page i want to raise some event that will do something. But what that event is known as? By text selection i mean placing mouse pointer to some text and left clicking and moving the mouse either to left or right. Now when user selects some portion of text and releases the mouse's left click button a event should be raised. Obviously that event should know what was the selected text. So is it possible ?
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Apr 29, 2009
I have not been able to get this output change when the drop down menu choice changes. I have looked at numerous examples but I can't find one that has this simple output change. What am I missing?
<HTML>
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Sep 23, 2011
I have a dropdown box with 2 selections(True/False default False) .If false I want to show under it a form like so.
input text
input check
input text
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Jun 7, 2011
I have made one banner that changes its images turn by turn with settimefunction(). I have used div and z-index to keep the layers up and down. I want only whenever any visitor clicks on the tab of the specified category because images and lower tabs are changing same time, it should stop the movement of that particular image. I am fighting more than 3 days.
Following is the html code of this banner
Code:
And then here is the style code that deals with DIV's of this html.
Code:
And the last i am putting the javascript function that runs these images turn by turn. I am calling this function on body load. i did one experiment i called this function from tabs by sending variable i value but after 2 or 3 clicks it got the speed greater and greater.
Code:
You can visit this [url] where you can easily look at the images of that are changing turn by turn with tab(s) that are also changing turn by turn.
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Sep 21, 2010
The code below lets a user select a drop down option and a picture changes depending on the selection. I am trying to make it so when you select an option on the dropdown the picture shows up in the center of the screen and in the background behind the text. Here is the code.
<html>
<head>
<style type='text/css'>
#txt {background-repeat:no-repeat;width:200px;height:200px;}
</style>
<script type='text/javascript'>
function div_bg(team){
document.getElementById('txt').style.backgroundImage="url(images/" + team + ".jpg)";
}
</script>
</head>
<body>
<select name='team' onChange='div_bg(this.value);'>
<option name='arsenal' value='arsenal'>Arsenal</option>
<option name='liverpool' value='liverpool'>Liverpool</option>
</select>
<div id='txt'></div>
</body>
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Oct 13, 2010
I'm trying to write a progressively enhanced web application. I have an index page and a form with some select boxes and some radio buttons on a different php page. Before enhancement occurs, the form is accessible via regular links and everything works as expected. No issues.
In the enhanced version of the application, the form is AJAXed into the index page. When this occurs, the select boxes in the form work perfectly. The radio buttons are initially unchecked and I can check one option as usual. However, once one is checked, clicking the other radio options does nothing. I am unable to check a different option.
Anybody got a clue what the problem is?
Using Chrome by the way. Firefox is the same as Chrome. In IE I can't even check a radio button the first time.
Here's the code that's ajaxed in:
<label>First Time Buyer Status
<!--These values can't be 1/0 because 0 stands for not set-->
<input type="radio" name="FTB" id="FTBYes" value="1" <?php $M->checkFTBValue(1); ?> title=""/>First Time Buyer
[Code].....
The PHP script you see there checks if the value on the server matches the value of the radio button and echo's checked="checked" if true. I thought this could be causing the problem initially but the exact same code is used in the non-enhanced version and it works fine. I tried commenting it out anyway but it makes no difference.
The only thing I can think of is that some javascript is preventing me from selecting a different radio option. That would explain why it works ok in the non-enhanced version because there is no JS there. I can't find anything that I've written that might cause this effect I'm using jQuerys form plugin on my pages. I'm going to try writing it out and see if that fixes anything.
In the mean time, is there a way I can check if any JS functions when I click on the radio button?
Sorry if this is in the wrong forum, there's so many different languages involved, I hadn't a clue where to put it.
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Feb 10, 2010
with the code details as to how this would be possible.
<form method="post" name="validate" action="internet_marketing_and_email_blasting_signup.php" enctype="multipart/form-data" onmouseover="change(event,'../images/submit1.png')"
[code]....
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May 19, 2010
I need to achieve two things upon making a selection from a drop down field:
1) Changing the background picture of a cell.
2) Changing the size of a uploaded foreground picture within the same cell. code...
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Jun 26, 2011
based on dropdown selection i need to fill two text box in sharepoint 2007 using jquery.
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Jun 28, 2011
populate textbox based on dropdown selection index change. populate two text box on the dropdown box value selected index change dynamically.
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Aug 25, 2010
I've been struggling trying to get a small order form to work the way I want it to. Here is a link to the live page: [URL] And here is the code in question:
[Code]...
I have two questions...
Question 1 How can I make this piece of script act a little smarter. Look at the order form, I'm catering for up to 4 people and providing lunch for them. If they select 3 people and the spaghetti bol for lunch, it's only adding $10 where it should be adding $30. Obviously this is simple multiplication but since the values in my form are prices it makes it a little tricky. I'm guessing an onselect on the first part of the form which changes the pricing of the other items would be the way to go, but how do I do this?
Question 2 The "Total Price" is placed before the <form> tag by the script. This is ok but it's not where I want it. How can I position this text elsewhere in the document?
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Mar 20, 2010
I've been having problems getting my select option to change the options of another select option. I'm not much of a javacsript coder, so I'm at a lost.When I select the first option nothing appears in the second option.
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Jul 22, 2011
Well the topic pretty much sums up the problem. I'm pretty familiar with using events to alter the value of an html tag or attribute via the DOM. I was wondering if it is possible to use an event to alter the value of a variable within. Well I wrote the script below to test that and sure enough it didn't work. So if by some chance it is possible to use events to do alter the value of a variable, how does one go about that?[code]...
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Dec 23, 2005
i have a little problem with javascript ... and i´can´t find an answer for it. i have a php-fotogallery where users can add fotos to a zip file an download multiple fotos at once. but i didn´t what that the site has to reload every time a user clicks the "add foto to zip" button - so i´ve the first time contact with javascript wich changes a little icon on the site wich is generated by php and this php sets the variables for the zip-file.this works great - now here´s the problem an the question
is it possible to change an onclick event on runtime without reloading the page?
i want that the onclick event changes from "add to zip" to "remove from zip" and vice versa every time a user clicks on the link..
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Jul 20, 2005
I want to change the event handler for a form field, using JS code. But
there doesn't seem to be a way to reference it. MyForm.SomeField.onChange
is undefined. Anyone know if there's a way to do this?
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Sep 9, 2010
I have a series of checkboxes on a page and the goal is to run an ajax post each time one of the checkboxes is checked. When the page loads, the first time I click each of the checkboxes everything goes as planned. After I receive the response from my ajax php function and all related events fire, I click the checkbox again and nothing happens. The event listener seems to have stopped functioning.
Here is my code:
$(document).ready(function() {
$(':checkbox').change(function() {
$(this).attr('disabled','disabled');
$('#' + $(this).attr('id') + 'Waiting').addClass('loading');
[Code]....
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Jan 9, 2011
I've been stuck on this for a few hours today, and I can't seem to figure out how to correctly accomplish my task.Objective: Dynamically change the value of a <input type="checkbox" />, thus causing the .change( ) event to be fired, from an outside element, with the checkbox being hidden.So, my code eventually gets to this point:
if ( /* CONDITION */ )
{
$( 'input[name="new"]' ).attr( 'checked', true );
[code]....
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Jun 16, 2010
when a change event is triggered is there a way to get the previous value before the change?
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Aug 25, 2011
I know in JavaScript you are able to write functions that you can just call at a later time. I'm working on a jQuery UI slider, and I wrote a function for the animation that happens when you start sliding. I would also like this same function to fire for the "change" event, but I can't seem to get it to work.
Here is the shortened code sample:
$(function(){
var posterO = $(".poster-slider")
.slider({
slide: function(event, ui){
//This is the function I would like to reuse at "change", below
poster.css(...);
posterLi.css( ... );
ptCopy.css( ... );
sliderValue = ui.value;
},
//change:,
animate:true
});
//When "#abundant-trees" link is clicked, the slider handle changes, firing the "change" event, but the "slide" function is not called.
$("#poster-switcher a[href=#abundant-trees]").click(function(link){
posterO.slider("value", 100);
link.preventDefault(); //Stop browser from following the link that was clicked on.
})});
I would like to apply the "slide" function to the "change" event without having to duplicate all the code.
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Jan 20, 2010
I would like to change the webpage when someone changes the select input and then clicks Go.Unfortunately I've not been able to with jQuery, here's what I have now, but I would like to use jQuery.
HTML:
<select id
="productlist
">
[code]....
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