Opera - Problem Determening The SelectedIndex Via JavaScript/DOM
Jun 7, 2006
I have a problem determening the preselection of a dropdown list via
JavaScript DOM:
The followin code works fine with IE and Mozilla but does not preselect
the correct element in Opera:
//snip
myCurrentElement =
window.document.getElementById(''role'');
myNewElement =
window.document.getElementsByTagName(''font'')[0];
myNewChildElement =
window.document.getElementsByTagName(''select'')[0];
for (var i = 0; i < optionArray.length; i++)
{
myNewGrandChildElement =
window.document.createElement(''option'');
myNewGrandChildElement.setAttribute(''value'',
optionArray[i]["value"]);
if (optionArray[i]["selected"]!=null)
{
//myNewGrandChildElement.setAttribute(''selected'', ''selected'');
}
myNewGrandChildElementText =
window.document.createTextNode(optionArray[i]["label"]);
myNewGrandChildElement.appendChild(myNewGrandChild ElementText);
myNewChildElement.appendChild(myNewGrandChildEleme nt);
}
myNewElement.appendChild(myNewChildElement);
myCurrentElement.appendChild(myNewElement);
//snip
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Jul 23, 2005
How do you view javascript errors in Opera?
IE pops them in a modal box and NS has the excellent javascript console.
What does Opera have?
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Jul 20, 2005
I've been trying to make this simple script compatible across various
browsers. It works for IE 6.0 and NS 7 but doesnt work with Opera (I
have version 7.11). This is what is supposed to happen: when the user
clicks a button in the main window, a dialog window pops up. In the
dialog the user enters a university to search for. When the string is
submitted, the dialog then shows all the matches found in the
database. The user picks one and clicks the Submit button. The Submit
button's code is as follows:
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Sep 8, 2001
I have a site which uses a javascript fullscreen popup window which launches from the splash page (as well as a standard browser version for those with non-compliant browsers). All works well on both Netscape and IE, but if you're using Opera and you click on the "All other browsers" version, you get both the browser version and the popup version. This will probably be very irritating to Opera users. Unfortunately, I can't just program the popup for Opera compliance as well because it won't do fullscreen - it nests under the ad/control bars. Could someone look at it in Opera and maybe suggest a solution? Opera users don't make up a lot of my user base but I really prefer to be Opera-compliant.
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Sep 15, 2004
We've got a server-side page (status.php) that dynamically generates a GIF image. The displayed image depends on the value of a boolean field in a database. Just calling the page displays the current value of the boolean, calling it with a parameter switch (status.php?switch) flips the database value and generates a new image. We've included headers to prevent caching of the image by the browser.
Whenever our HTML page is displayed in the browser, we just include an image that shows the current status: img src='status.php'/
We want to allow the user to click the image, which then inverts the boolean status in the database: img src='status.php' onclick='this.src=status.php?switch;'/
This works great in Internet Explorer, but both Mozilla and Opera only allow to switch once. My idea of the problem is that those browsers think like this; after one click, the src is already 'status.php?switch', so changing the src again would be redundent in their eyes, so they won't do it.
We found a temporary solution by generating the current time as a parameter in the image URL: img src='status.php' onclick='this.src=status.php?switch+(new Date());'/
However, this is not a very elegant solution.
Does anyone know a proper solution to this? This means, forcing Mozilla and Opera to load an image using JavaScript, even though the URL of the image didn't change?
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Aug 17, 2006
I'm trying to get the value associated with a selected index in a drop down list.
Here's an example:
HTML Code:
<select name='elem'>
<option id=颼' value='Hello' name='hello' />
<option id=餠' value='Hello' name='hello' />
</select>
My Javascript is as follows - THIS CODE DISPLAYS CONTINUOUS VALUES: 1,2,3...
Code:
alert(elem.options.selectedIndex);
If I were to use the following, I'd get 'undefined' alerts
Code:
alert(elem.options.selectedIndex.value);
The thing is I need the value, not the index.
Any ideas/references?
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Mar 2, 2010
I am trying to figure out if there is a way to get the selectedIndex of a select by its value, without going through a loop to check for it.
I know the value of a select, and I want to make the option be selected. But I don't know the selectedIndex. Was hoping to do it without going through a loop to determine the selectedIndex
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Jun 3, 2005
I have one select, I can say wich element is selected:
<select name="myselect">
<option value="100">A</option>
<option value="101">B</option>
<option value="102">C</option>
</select>
this line will select the option B
myselect.options.selectedIndex = 1;
but, how can I do if I want to select the option B without knowing it´s position?
I mean, I want to select the option B and the value 101, but I don´t know it´s position
any idea?
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Jul 20, 2005
I am using IE5 and have a select-box with options that have different
colors. Is there a way to read out the style attribute of the
selectedIndex (here: color)? See simple demo script here under...
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Aug 6, 2009
I have the following snippet I'm trying to make work in Firefox:
Code:
for(var j=0; j<sBox.options.length; j++){
if(sBox.options[j].value == 68)
sBox.selectedIndex = j;
}
No errors are thrown and the correct index is not selected.
However, when I add the following line to the snippet, it magically works fine:
Code:
alert(sBox.options.length);
for(var j=0; j<sBox.options.length; j++){
if(sBox.options[j].value == 68)
sBox.selectedIndex = j;
}
Instead of using alert, I've tried simply assigning sBox.options.length to throwaway variable, but I end up with the same results as the first snippet.
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Jun 19, 2009
why does this work under FF and only ONCE in IE but the problem remains the same as the firefox only code crashed IE's javascript.so it works only once still.SOLUTION -> changed event from onchange to onclick for my checkbox calling that function !
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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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Mar 18, 2011
[url]
This is my sample code so far. Currently it only works for "Akali" under the "Select a champion..." dropdown list.
The way it works is, you select a level from 1-10 from the "Select a level..." dropdown list, and then you select Akali from the other dropdown list and her "Health" is calculated by "lvl * 80 + 510" which works perfectly. But the problem is if you change the level that value does not update automaticly. Instead the person using it has change the level to the new level they desire, change the champion and change it back again for it to update. Which normally would be ok, but I will be adding much, much more data to the page and I can't ask people to have to update stuff 10 times just to get accurate figures.
I took this from the w3schools jQuery tutorial and built a button, so ignore the way it currently works. I guessed that with a button it would when pressed it would take the latest, aka current selectedIndex values and all would work fine, and it does actually. But I just wanted to ask if there was any way to keep all the information updated at all times without a button, or maybe a button that will update everything on the website with just one click?
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Apr 27, 2010
If the user types "a" then the select box is populated with "Choose An Animal...", then the three three animals beginning with A. So far so good. But if the user selects say Albatross and then types the letter b then the option "Bear" is selected rather than "Choose An Animal". Although the code is sel.selectedIndex = 0; (not 1). How can I force the selected index to 0 when a choice has been made previously? Is this a bug - if so it is the same in IE and FF.
<html>
<head>
</head>
<body>
[code]...
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Nov 1, 2010
Is it possible to trigger a change event on a select field when the selectedIndex or val is set with jQuery? I've tried it and it doesn't seem to work. I'm attempting to replace a select field with one of my own design. The issue is if i attached a change event to a select field, when the index is changed it needs to fire that event. Basically if a select field is replaced with my list and a seperate script is set on the select list, I need that seperate script to fire without knowing what it is.
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Jul 23, 2005
<script language="JavaScript1.2" style="text/javascript">
<!--
function checkLocation() {
if (navigator.userAgent.indexOf("Opera")!=-1) type="OP"
else if (document.all) type="IE" // ie 4 & up
else type="XX"
if (type=="IE")
moveNav.style.pixelTop=document.documentElement.sc rollTop
setTimeout("checkLocation()",5);
}
//-->
</script>
This is suppose to keep the Nav bar at the top of an IE browser. (Yes, it
wobbles a little bit, but what can I do?)
With most other browsers, the Nav Bar stays nice and stationary at the top,
thanks to a nice CSS solution. However, with Opera (at least Opera 7.54 that
I have) the nav bar wobbles a bit like I would expect it to in IE, but still
it gets hidden under most scrolling situations. What's the cure for Opera?
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Mar 30, 2006
I have strange situation, in my webb apps i use a lot of AJAX.
in my developer computer i use opera and naked apllication (it's using
Python Application Server cherrypy www.cherrypy.org), in production I
covered my application be Apache server which serves static files. The
problem is that AJAX working in Opera but only on production server
(cherrypy behind Apache), on developer machine it's not working. Others
browser (IE, FF 1.5.0.1) working without any problem. Does anyone know
solution for this? Or is is a way to lookup what is happen under Opera
engine? any plugin or something what shows AJAX status call?
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Jun 28, 2006
I really want to make my scripts work in Opera. I really, really do.
But it seems like an uphill struggle. First of all, I can't get ANY
kind of debug output. No error messages in the "javascript console" -
but then, I have never seen ANYTHING in Opera's javascript console. Is
there some kind of voodoo I need to perform in order to make that work?
Then, when Opera doesn't like something about a script (even if it works
fine in Spidermonkey), it will sometimes refuse to load it entirely,
which means I can't even do alert() based debugging. What the hell?
Can anyone give me some insight as to how they go about making their
scripts run properly in Opera? I make a point of sticking to ECMAScript
standards (and then making per-browser exceptions where needed *COUGH
IE*), but Opera just doesn't want to cooperate.
This is in Opera 8, by the way. I haven't upgraded yet, since I don't
use it, and I think more people still use 8 than 9 so that's what I want
to target.
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Jul 18, 2006
i have such a problem:
document.forms[formName]['image'+orderID+'_'+lineID].click();
this code works only in IE! how can i make something same in Opera 9?
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Jul 20, 2005
Has any user of Opera 7.11 noticed that it does not reload all files
when the reload button is clicked? I can click on my html file to cause
Opera to load and start and it's OK. But if I then correct an error in
a *.js file and click reload I often get a javascript console with the
same error that I just corrected and line numbers that refer to the old
file. This has got to be something that I am doing wrong, but I can't
see it.
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Jul 20, 2005
I have included a file below that tests onKeyPress in Opera 7.11. I am
getting peculiar behavior. When the file is first loaded, pressing the
keypad + causes the textarea to get physically larger on the screen, and
pressing the keypad - causes the textarea to get physically smaller. I
click on the scrollbar then this behaviour stops and subsequent
keystrokes are displayed appropriately. Is this some kind of bug in
Opera 7.11? Code:
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Mar 27, 2005
I'm in the process of migrating a script to use DOM core methods but I've hit a roadblock in the aforementioned browser. The following code snippet illustrates what I'm basically trying to do, it really is incredibly basic!
var newimg = document.createElement('img');
newimg.setAttribute('id', 'placeholder');
newimg.setAttribute('src', 'images/large/courtyard.jpg');
I'm then positioning the element on the page using appendChild(). Everything works perfectly on Firefox 1, IE5+, Opera 8, Konqueror 3.3.1 (Linux) but not in Opera 7.54. I suspect the element is being created as associated styling on #placeholder is being applied (just some padding and borders) but the image itself is not being displayed. I assume therefore that the problems lies with setAttribute()?
This seems like the sort of problem that others would have encountered, but I haven't been able to find mention of it anywhere.
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Nov 6, 2005
I am using this code:
document.getElementById("p").setAttribute("disabled","true");
to disable a button after user clicks it (this is to make sure user clicks it only once). It is needed to prevent multiple clicks on a button since each click calls a servlet.
This code works in IE but does not in FF and Opera.
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Jun 24, 2011
I have this code
[URL]
If you'll use Opera browser, it will display lightbox style animation after clicking on marker on the map. Other browsers are not so kind
Chrome give an error Uncaught TypeError: Object [URL] has no method 'click'
To display animation in bumpbox(lightbox alternative) I use this html code
Code:
<div id="neco" style="display: none">
<a href="clouds.swf" class="bump">clouds</a>
</div>
and this javascript
Code:
google.maps.event.addListener(markerName, 'click', function mojafunkcia() {
document.getElementById("neco").getElementsByTagName("a")[0].click();
})
I assume that html element cannot access that javascript function because it ist nested within other function (please see source code on turie.eu), but I'm not very skilled with javascript, so I'm not sure.
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Jul 23, 2005
How to get multiple onLoad in Opera (v.7)?
Example shows what I mean - it works well IE and Mozilla, but not in
Opera Code:
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Jul 23, 2005
the problem is, i have this javascript code in my aspx page that i want
it to work on almost all browsers, especially opera and safari :
function resize(){
displayFrm = document.getElementById("ifrmDisplay");
innerDoc = (displayFrame.contentDocument) ?displayFrm.contentDocument :
displayFrm.contentWindow.document;
objToResize = (displayFrm.style) ? displayFrm.style : displayFrm;
objToResize.height = innerDoc.body.scrollHeight;
}
the code above gets called every time a new page is loaded inside the
iframe (ifrmDisplay) what its doing is resizing the iframe so it can
have the same size as the page inside it, so i can eliminate the need
for vertical scroller for the iframe, i assumed that it works on opera
and IE at the same time, when i tried it out, it worked on IE but not on
opera. after lot of time in researching how i can get workaround this
issue with opera, that is the best possible solution i have and yet it
doesnt work. so i gave up and asking you if you can help me out here ,
coz this is jst driving me crazy!
the problem is im not a javascript expert, to be honest i jst started
doing javascripts about two days ago, that is why im in need for help
by the way, here is inner html for the iframe if its any use
<iframe id="ifrmDisplay" style="Z-INDEX: 99; LEFT: 187px; WIDTH: 567px;
POSITION: absolute; TOP: 136px; HEIGHT: 408px" src="" scrolling="no"
</iframe>
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