Can Alt Property Of IMG Be Dynamically Changed With Rollover?
Jul 23, 2005I would like to change the alt-text with the changing of the image during a
mouseover action.
Can document.images[0].altView be changed dynamically?
I would like to change the alt-text with the changing of the image during a
mouseover action.
Can document.images[0].altView be changed dynamically?
I had read from books that the constructor property of object is inherited from its prototype. And the prototype can be changed dynamically. New property can be added to or deleted from object even it was created before the prototype change.
But I got confused on below codes.
But the actual result (both IE and firefox) is
So I have a table. With jquery I change border properties of several td. If later on in the code those same td have their background color changed by jquery, their borders return back.
Even if nothing is changed, nevertheless after some time some of the borders would seemingly randomly suddenly show up. I am working on a maze so this really spoils the game.
Code:
if($("crush",xml).text()=='1'){
border1=$("border1",xml).text();
border2=$("border2",xml).text();
[Code].....
Having trouble specifically with onmouseout, onmouseover, and onclick used on areas in an image map. I'm trying to replicate the interactive hearing aid sound demonstration that can be seen on contactainc.com homepage but program it with javascript instead of flash. In the end of countless hours of research, frustration, and browser incompatibility (only chrome will actually change the image, ie nor firefox do anything except display one image).
Here's my guidelines...
The hearing aid has three switches. An image is created for each switch being selected. (3 images) The first switch is the off button or stops any sound playing when selected. The second switch upon selection plays a sound file of somebody talking. The third switch upon selection plays a sound file of the same person talking but also with background noise. A polygon area has been created for each switch as part of an image map. (3 areas)When a switch is selected (let's say switch 1), the other switch areas upon mouse rollover are highlighted in yellow (either switch area 2 or switch area 3) but the switch that was selected (switch 1) doesnt change upon mouse rollover. So this had me create 2 more images per switch displaying the switch selected and the two other areas highlighted. In total this is 9 images.(3 imaged per switch + (3switches * 2 switch areas highlighted) = 9).
The image names are as followed HearingAid(switch number)(nothing,a, or ) corresponding which switch is highlighted; a being bottom most switch area different than switch that's selected and b being top most switch area. So they are HearingAid1.png, HearingAid1a.png, HearingAid1b.png HearingAid2.png, HearingAid2a.png, HearingAid2b.png, HearingAid3.png, HearingAid3a.png, HearingAid3b.png.
The original image will change to the appropriate image out of the 9 images I created based upon left clicking an area to select the switch and mousing over other switches which are then highlighted.
My first problems from my first few attempts was that when I selected a different switch from the original off switch, my onmouseout for all switch areas was programmed to revert to the original off switch image and not the image I selected. So I thought I needed to dynamically change those attribute values to new ones every time I selected a new switch. I couldn't find anything in my research that would help me since I tried a lot of things and saw them all fail when testing them out.
My latest attempt I thought had the most potential but it seems like the onclick attribute is working at all. I can't figure out why either.
Here's my latest code:
I have a bunch of input rows, each with id in the form of something like.. item:characteristics:age or item:setting:type1:blah. It's kind of like going down folders to get to the item I want. So as you can see in the code, I am splitting each id and trying to rebuild it in the form item[characteristics][age] then set it to the value of the input field. This is modifying the properties of the item. We already have the item object passed into my code and i'm simply modifying the properties to the new values from the user's input.
Does anyone know how I can do this without eval? I'm mainly using it because the variable name can't be hard coded, it is dynamic.
Here's the code I have so far.
Basically, I have a bunch of input rows, each with id in the form of something like.. item:characteristics:age or item:setting:type1:blah. It's kind of like going down folders to get to the item I want. So as you can see in the code, I am splitting each id and trying to rebuild it in the form item[characteristics][age] then set it to the value of the input field. This is modifying the properties of the item. We already have the item object passed into my code and i'm simply modifying the properties to the new values from the user's input.
Does anyone know how I can do this without eval? I'm mainly using it because the variable name can't be hard coded, it is dynamic. Here's the code I have so far.
[Code]...
am at the very beginning of Javascript. This is the first website I tried to include Javascript, so don't be too mean
What I want to do is to change a CSS property dynamically. It'll be best if I show you what I did:
<script language="javascript">
function ChangeHeight()
{
var browser = navigator.appName;
[Code].....
Why I want do change this? Well... Different people have different resolutions and I want that my website fits perfectly into the browser.
alert(document.getElementById('content').style.height); This shows just an empty MessageBox with nothing in it.
I got this problem with live() event.I have used it as follows.
$(".addressDiv span").live("mouseover", function(){
//clickable function here......
------------------------
});
I have used the live() event to trigger the function on mouseover in the dynamically added elements. But the problem i got is that once the live event is called it takes the class of the element and stores. And when the class of that particular element is changed dynamically the live() event does not detect the new classed added dynamically, instead it takes the former class. Live() event does not update the class.
I have a situation where a context menu is being added to the DOM dynamically when a user right clicks on a control on the page. The div that gets added does not have an id set but the div does have a unique class. WhatI need to do is intercept the addition of the div and add a hover affect to some child nodes. Specifically any children that are <a> nodes. So far this is whatI have for adding the hover affect, but i'm not sure where it needs to go or howI link it to the event raised whan a new element is added to the dom.
$(
'div.context_menu_main').find('div a').hover(function() { $(this).addClass('context_menu_hover');
}, function() {
$(this).removeClass('context_menu_hover');
});
I have no control over the div itself as its part of a third party control soI am unable to add an id.
I am dynamically creating a checkbox element. I need to then have assign the checked property to it or not. But In the code below, it's always checked because the property is present..
Code JavaScript:
$('<input>', {
type: "checkbox",
id: "checkbox" + value.AttributeName,
[Code]....
I am currently encountering a problem with setting "display" property from "none" to "block":
Browsers will refresh itself when the display property is changed; this causes the element to display then suddenly disappear after the page reload. Do you guys have an idea what I can do to avoid it?
I tried using jquery's show command, css command with setting display to block, and pure javascript method like document.getElementById("theId").style.display="block".
I get an error when I try to dynamically add an attribute to some elements, since I been getting the error "Object doesn't support this property or method" in IE I reduced the attribute value to just alert.
Code JavaScript:
Note that in firefox all the elements with the class boxcontainer gets "hello world" alert. I removed this specific code (shown above) out of the page and the error in IE goes away, so I'm 100% sure nothing else is causing it.
I have navigation buttons that I'll call primary buttons. I also have secondary navigation buttons that I'll call secondary buttons. If you rollover a primary navigation button, it should make secondary navigation buttons 1,4,and 5 go to rollover state A. However, if you rollover secondary navigation button 1,4 or 5 they should go to rollover state B.So the simplest way I can explain it is that the secondary navigation buttons need two rollover states possible.
View 2 Replies View RelatedBefore, I had an iframe, and when I moused over a link outside the iframe, it would load a page into the iframe. Background image was part of the page loaded, as well as the text and what not. The problem was, the image took too long to load. I've been learning how to do javascript and I came across some code for preloading an image before the mouseover so there was zero wait time. For the past few days I've been trying to figure out how to have the preload image appear BENEATH the iframe (now with no background image or color) with the allowtransparency attribute set to true.
I've figured out the code to do both individually, i.e. I have the code so that when the link is moused over, the new image will appear; AND I have the code so that when the link is moused over, the page with load into the iframe. Both work, both do what is expected, but they don't do it together.Below is the script. Here's where it's confusing. If I have the "setupImgRollover..." first inside the if statement: the page loads into the iframe, but there is no image. If I have the "setupImgRollover..." after the "document.link..." commands in the if statement: the image appears but the page does not load into the iframe.
HTML Code:
window.onload = rolloverInit;
function rolloverInit() {
for (var i=0; i<document.links.length; i++) {
var linkObj = document.links[i];
[code]....
I have a input field array, and have associated a change JQuery event handler if the value of any of the fields in the array have changed. So:
PHP Code:
And..
PHP Code:
In the Javascript, how can I retrieve the name (or index to be more precise) of the field that has had its value changed?
Does anybody of you have a good algorithm to capture when a value in a
textbox is changed? I'm using the keypress/keydown events but they seems to
be a bit inconsistent (IE and Mozilla). Basically what I want is to set is a
"isDirty" flag when a user has changed any value in the textbox (or in a
dropdown) and then if he/she tries to leave the record without saving I want
to give a save warning. Since I don't want set the isdirty flag if you for
example klick tab, certain F-buttons, arrows (up/down/left/right) etc I
tried to capture the keypress/keydown event and ignore specific keycodes.
Since there are several keycodes that should be ignored I was hoping there
is a better solution.
How do you detect that a form element has been changed? This thread:
http://groups.google.com/group/comp...25a82c9be127790
suggests that you attach onChange event handlers to every form element,
and when the handler fires you update a global 'isChanged' variable.
This technique seems to be a bit messy to me (I have many form
elements), I was thinking about storing the original form object in a
javascript variable when the body loads (in the bodie's onLoad event
handler), and upons submission, doing a javascript equality comparison
with the current form object. If nothing has changed, then the two
objects should be equal, right?
if(oldObject == document.getElementById('form'))
{
alert('has changed!');
}
Would this work?
After fetching a timestamp via sql,I return to javascript to do the formatting. Actually, I was first doing a bit of formatting in php to change from yyyy mm dd hh:mm (as saved in db) to mm dd yyyy hh:mm as I found the 1st not to work with the Date() function in FF.Consider the following...
var date_from_server = "06 03 2009 01:37";
var jsDate = Date(date_from_server);
In FF jsDate is "Thu Jun 03 1909 01:37:00 GMT-0700 (Pacific Daylight Time)".In IE7 jsDate is NaN.I've tried a few different formats. Does IE7,s Date() function not allow an arg at all or only of a certain format?
I have a form where users need to be able to change a particular value in a <select> but need to confirm that this is what they want to do under certain circumstances. I have the script firing up ok and prompting the user, but I'm darned if I can figure out how to undo the change if required.
What I want to do is something like document.form.object.value=document.form.object.oldvalue but I have no idea what the correct properties are.....
So, how do you roll-back the selection in a <select>?
window.opener.img<%=rowid%>.src = "this.jpg";
window.opener.col<%=rowid%>.innerHTML=strReturn;
window.opener.row<%=rowid%>.style.display = "inline";
The innerHTML and style.display of the above works. Both col?? and row?? can be targeted and changed. However the img?? does not work. The ID on the tag is fine but the image wont change. Incase it was src I tried with style.display too on the image but still wont target it.
I have a page where I load in a template from another company via IFRAME, the template I cannot change, but on a certain page of the template within the iframe I would like to tell the user some extra information, but my page remains the same and only the information in the iframe reloads, so is there a way to tell when the iframe changes so i can innerHtml some extra info on certain parts?
View 3 Replies View RelatedI've got a web site that is frequently updated; yesterday several
subscribers contacted me to say they couldn't see the update. I suspect
this is a cache problem, so is there a way to force a page to be
reloaded when it is changed. I realize it is too late for the current
pages, but I'd like to include something later.
[code]I am having a hard time coming up with jquery code to have it so if I rollover something in .list that it will change the background image in #column2.I am thinking that building an array of IDs and IMAGELOCs would do the trick. Basically the PHP is going to give me IDs and Image Locations.I am just not sure the best way to write the jquery (cleanly) to perform the functions I want. I also want it so when you click the LI that the ID number that matches the DIV inside of #column2 will be shown.I understand jquery on a "copy & paste & modify" basis but having a hard time utilizing FORs and such.
View 1 Replies View RelatedPardon me if i'm a bit confused while trying this jquery.This week I'm with jquery almost in every day..
[Code]...
How can I trigger a jquery event for when a user changes the option that is selected in a select statement? I need to update a variable with the new selected item when this happens.
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Trying to construct a sql statement to update field values contained in a form. I would like to only update the values that are changed. If the current $_POST[] values populated in the form are not changed, there is no need to add that field to the UPDATE statement... but i am not sure how to do this with javascript and pass only those values. Can someone help?
Some say that it is not worth the code processing to do this but I would like to do this if possible. I know that phpmyadmin works this way.