Develop Reference

Unable to show the div on body load

This is my code posted in a jsfiddle Demo.
As you can see when you click on the
Hyderabad.
Visakhapatnam.
Then a Horizontal Image slider is shown ( YOu can slide throgh the Pictures )
Now my requirement is I need to also show the Image slider on body load itself also
I have tried using body onload function to show the div , and also in Jquery ready function , and by commenting all the hide() functions in javascript , but none of them really worked .
Could anybody please tell me what is the way to do this .

I just tested it.. first I thought that you should just do this:
jQuery(document).ready(function() {
$fp_galleries.first().click();
});
but poorly this will only show the first image and not all images.
I don't know why but it looks like you should do this.
$(window).load(function() {
/* your code */
$fp_galleries.first().click();
});
Maybe because you need to wait until the images are loaded.

perhaps use document on ready to call the function: http://api.jquery.com/ready/
$(document).ready(function() {
openGallery(galleryname){
})
;

The problem is not that it is hidden, its rather that the content are only generated by som javascript when the user clicks one of your links.
You could add something like
$("li",$fp_galleries).first().click()
at the bottom of your script.
This will trigger the click event on one of the links.

How to execute jQuery function after Ajax page load

I'm building Wordpress website where all content pages are loaded using Ajax. This is causing me a problem with jQuery localScroll plugin. This plugin will add animated scroll to all anchor links on the page. Problem is that using script below I'm able to have animation on that page only after one of the links on the page is clicked.
I think I understand why is this happening. My guess is that after I click on the main menu script will execute but since Ajax content is not yet loaded events are not attached to Ajax loaded content links. Now I'm stuck, I have no clue how to fix this. Would you mind helping me with this one?
Thank you in advance.
$(function(){
$('a').live('click', function() {
$('#portfolioWrap').localScroll({// Only the links inside that jquery object will be affected
target: '#portfolioWrap', // The element that gets scrolled
axis:'y', // Horizontal scrolling
duration:1500
});
});
});
EDIT
Just a note to others after I managed to make this work. I tried all suggestions here. My guess is that solutions suggested by o.v. and Ohgodwhy should work, but probably due to website complexity and maybe plugin limitations I wasn't able to make them work. For example .on function didn't work at all although I'm using jQuery 1.7.1. At the end I implemente ajaxComplete suggested by Just_Mad and that worked. Thank you all for your help!
This is the code:
$(function() {
$('#wrapperIn').ajaxComplete(function() {
$('#portfolioWrap').localScroll({
target: '#portfolioWrap', // The element that gets scrolled
axis:'y', // Horizontal scrolling
duration:1500
});
});
});

If you use jQuery.ajax to load AJAX content you can try to bind to ajaxComplete event, to get the moment, when any ajax is complete.

Elaborating on what GoldenNewby said, listen/attach with the .on() method introduced in jQuery 1.7.
$(function(){
$('body').on('click', 'a', function() {
$('#portfolioWrap').localScroll({
target: '#portfolioWrap', // The element that gets scrolled
axis:'y', // Horizontal scrolling
duration:1500
});
});
});
No need to use AJAX for callbacks for listening/binding to elements. The above function will place a click function on all elements found within the body{1} at/after page load. This includes all dynamically created links.
{1} - Change 'body' to whatever Container has the ajax data. I.E. #portfolioWrap

Add a callback to the ajax load, good place to start is at http://api.jquery.com/jQuery.ajax/ under "success callback"
I would have given more specific advice, but your snippet is a bit isolated, maybe if you created a jsfiddle?

jQuery slow reveal on page load

I am trying to do a slow reveal on a particular div with an id of 'contentblock' on page load. This is my first time trying to code something in jQuery and I continue to fail. The following is my latest attempt, but I'm a complete newbie to this and surprisingly google hasn't been a whole lot of help.
<script type='text/javascript'>
$(window).onload(function(){
$('#contentblock').slideDown('slow');
return false;
});
</script>
before that I also had the following instead of the window onload line above:
$(document).ready(function(){
But that didn't have any success either. Can someone help a jQuery newbie out?

First, you'll need to make sure the element is hidden (or it won't be shown, since it's already visible). You can do this in either CSS or JavaScript/jQuery:
#contentblock {
display: none;
}
Or:
$('#contentblock').hide();
If you use CSS to hide the element you need to be aware that the element will remain hidden in the event of JavaScript being disabled in the user's browser. If you use JavaScript there's the problem that the element will likely flicker as it's first shown and then hidden.
And then call:
$(window).load(function(){
$('#contentblock').slideDown('slow');
});
I've made two amendments to your jQuery, first I've changed onload to load and I've also removed the return false, since the load() method doesn't expect any value to be returned it serves no purpose herein.
For the above jQuery you can use instead:
$(document).ready(function(){
$('#contentblock').slideDown('slow');
});

$(document).ready(function(){
if($('#contentblock').is(':hidden'))
{
$('#contentblock').slideDown('slow');
}
});
if you have jquery added to your project and your div is display none ... something like this should work.

I want to have a overlay using css but it's not working

I am trying to create a overlay dialog box using CSS . I wrote the css but I am not able to display the overlay dialog box. Any help would be greatly appreciated.
Check out my attempt here. Also this should work in IE9 and firefox.
http://jsfiddle.net/tGDKT

why not just use jQuery UI's dialog:
http://jsfiddle.net/maniator/tGDKT/15/
$(function() {
$('.clickme').click(function() {
$('iframe').dialog();
});
});

You could also attach the method in the javascript, unobtrusive style. Give the <a> an id or:
$('a').click(calculateEmbeddedWindowSize);
... would call the function for every link on the page.

I keep getting "calculateEmbeddedWindowSize is not defined" in the console. Your javascript does not seem to be there at all on the page.
Edit - Try this: http://jsfiddle.net/tGDKT/7/

jQuery inside Media Wiki pages (not just in the Monobook.js or extensions)

I'm trying to do some simple jQuery stuff 'dynamically' from within a MediaWiki content page. Its really just to 'beauty up' some different features.
I've done the following:
http://www.mediawiki.org/wiki/JQuery
http://www.mediawiki.org/wiki/Manual:$wgRawHtml (mainly for Paypal buttons initially)
The below code does not work. This is put in a blank content page.
<html>
<script>
$j(document).ready(function(){
$j('#test').hover(
function(){
$j('#test').attr('background-color','red');
},
function(){
$j('#test').removeAttr('background-color');
}
);
});
</script>
<div id="test">Howdy</div>
</html>
Nothing happens...
Any ideas?
Update:
I have attempted this simple solution with no result.
example.com/wiki/index.php?title=MediaWiki:Common.js
$j('#jTest-Howdy').hover(
function(){
$j('#jTest-Howdy').addClass('jTest-red');
},
function(){
$j('#jTest-Howdy').removeClass('jTest-red');
}
);
example.com/wiki/index.php?title=MediaWiki:Common.css
.jTest-red { background-color: red; }
example.com/wiki/index.php?title=jQueryTest
<html>
<div id="jTest-Howdy">Howdy</div>
</html>
as you can see here, this code should work IF jQuery was being loaded properly...
http://jsfiddle.net/5qFhv/
but it is not working for me... any help?

If you're using the jQuery that's loaded by MediaWiki 1.17, be aware that most JavaScript is loaded after page content. An inline <script> element is executed immediately when it's reached, so $j would not be defined at this time -- you'll probably see some errors in your JavaScript error console to this effect.
(Offhand I'm not sure about the jQuery that's included with 1.16; versions of MediaWiki prior to that as far as I know did not include jQuery.)
Generally what you want to do here is to either put JavaScript code modules into the 'MediaWiki:Common.js' page and let that hook up to your HTML markup, or create a MediaWiki extension -- which you can then invoke from your pages, and which will let you create any fun HTML and JavaScript output you like.
http://www.mediawiki.org/wiki/Manual:Interface/JavaScript
http://www.mediawiki.org/wiki/Manual:Developing_extensions
Code you put in your 'MediaWiki:Common.js' page will be loaded after other UI initialization, ensuring that code and variables are present so you can call into jQuery etc.

I don't know much about MediaWiki, but to me it looks like some simple javascript mistakes.
In the first sample you are trying to set an attribute on the element,
when you need to set the css or style attribute.
$j('#test').css('background-color', 'red');
In both samples you are binding an event to an element that doesn't exist yet in the DOM, so it will fail. You could use the live method, which will work for existing and future elements introduced in the DOM.
$j.('#test').live('mouseover', function(){
$j(this).addClass('hover-class');
}).live('mouseout', function(){
$j(this).removeClass('hover-class');
});
Hope that helps.

Try putting all your custom jQuery code in its own file, then load it as a module with ResourceLoader, after jQuery.
http://www.mediawiki.org/wiki/ResourceLoader/Migration_guide_for_extension_developers
Also, as a debugging method: completely load your site in Firefox, then enter your custom jQuery code in the console. If it works, your problem is a race condition. If it doesn't, jQuery isn't loading for some reason.