Develop Reference

Javascript change image on mouse hover not working

I have an html code as shown below. So far it is able to display the intended image. I also tried to change the src attribute and works completely fine.
<article id="memory-game">
<a class="image"><img src="../../images/memory-game.png" id="memory-game" alt="" /></a>
<h3 class="major">MEMORY GAME</h3>
<p>Tkinter<br><br>A card-matching memory game implemented in Tkinter GUI;</p>
Confidential Source Code
</article>
Now I have this script tag at the bottom of my element. It is supposed to change the image of the above html code from png to gif upon mouse hover on the specified article id. Last time I used this code was about 3 months ago, and it doesn't seem to work now.
<script>
$(function() {
$("#memory-game").hover(
function() {$(this).attr("src", "../../images/memory-game.gif");},
function() {$(this).attr("src", "../../images/memory-game.png");}
);
});
</script>
I'm a javascript noob. Anybody could help me solve the png-to-gif-change-on-mouse-hover issue? Would be greatly appreciated.

You have 2 elements using the same id. The id should be unique per document. jQuery is matching the first id so setting the src attribute on the div doesn't have any impact.
Remove the id from the article as follow
<article>
<a class="image"><img src="../../images/memory-game.png" id="memory-game" alt="" /></a>
<h3 class="major">MEMORY GAME</h3>
<p>Tkinter<br><br>A card-matching memory game implemented in Tkinter GUI;</p>
Confidential Source Code
</article>

Get the title of an <img> and apply it to it's parent <div> with YUI3

I have the following HTML:
<div>
<img src="source.com/image.jpg" title="My Image">
</div>
I would like to get the title of all images ("My image") in this case, and add this title on to the parent , so that the above example would look like this:
<div title="My Image">
<img src="source.com/image.jpg" title="My Image">
</div>
Would appreciate it very much if someone could give me a push in the right direction!
Thanks!

This is pretty much the same question as the previous one you posted. In this case you do need to save the image node to a variable so that you can read its title and set it to the parent.
YUI().use('node', function (Y) {
var image = Y.one('img');
image.get('parentNode').set('title', image.get('title'));
});
If you're having trouble making changes to DOM elements I'd suggest you take a little time to read a couple of articles/books that introduce you to the subject. Here are some good options:
Eloquent JavaScript. A great book for starting with JavaScript and that has a chapter about the DOM.
The Mozilla Developer Network has a great collection of articles.
The YUI3 Cookbook will give you everything you need to get started with YUI.

CSS/Javascript Lightbox

First I'll start with this: I am in no way shape or form a developer, coder etc etc. I'm just a graphic designer helping a friend with her website.
As of right now, I'm having issues linking up thumbnails to the full images on my lightbox call out - you can view the site at www.chrissybulakites.com
I noticed
With VOID:(0) being in every single one ... my thought process was that if I correspond 0 thumb with 0 full then 1 thumb with 1 full then 2 thumb wwith 2 full etc etc it would work .. it didn't.
Can somebody explain to me if I'm on the right path or what I can do to make this work.
Thanks
Rob

Have have two basic elements per image; the thumb and the full image. The thumb is using JavaScript to show and hide a div (kind of like a frame) to hold the full image.
The HTML on the page repeats itself a lot, you can probably solve your problem whilst removing some of the repetition. I'd keep all of your thumbs but on each one, add in a reference to the full image the thumb represents. As well as reducing repetition, it'll make it easier to update the page in the future as changing a thumb and main image is done in one place rather than two.
In the below I've added another part to the "onclick" to say update the src of 'frame' to be the full version of the thumb.
<img src="http://chrissybulakites.com/thumbnails/longshot_thumbnail.png" />
Then delete all of the large images except one, updating it so that the img tag has an ID of 'frame'
<div id="light" class="white_content"><img id='frame' src="http://chrissybulakites.com/images/longshot_full.png" /> <br />Actor Observor - Boston, MA Close</div>
<div id="fade" class="black_overlay"></div>
This will mean that as each thumb is clicked, it will do the light and fad bits it did before but it will also update the image being displayed.
Doing this for two images as a proof of concept I get this which works as expected:
<img src="http://chrissybulakites.com/thumbnails/longshot_thumbnail.png" />
<img src="http://chrissybulakites.com/thumbnails/actor_thumbnail.png" />
<div id="light" class="white_content"><img id='frame' src="http://chrissybulakites.com/images/longshot_full.png" /> <br />Actor Observor - Boston, MA Close</div>
<div id="fade" class="black_overlay"></div>

you need to give each full image div its own unique id like: id="image23". Then modify the onclick to refrence the corresponding id: onclick="document.getElementById('image23')...

The meaning of the function void() in JavaScript is "do nothing". This prevents it to load a new new page (or to open the thumbnail image).
onclick = "document.getElementById('light').style.display='block';
document.getElementById('fade').style.display='block' "
Says that when user clicks that item it will capture the element light and change the display to block it will also capture the element fade and change the display to block. The thing is all your images are wrapped in an element called "light" so the browser is opting to show the first one (instead of throwing an error).
There is plenty of fuzzy logic here.
Starting with the fact that you are loading all images (the high definition ones).
If you want my two cents (and you only want to get the results, as opposed to learn how JavaScript works) I would go with something like prettyPhoto that does it out of the box, in an easy and straightforward way and is well documented.
How to add prettyPhoto to your page?
Download the code and include both the Javascript and the CSS file's on your header.
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.1/jquery.min.js"></script>
<link rel="stylesheet" href="css/prettyPhoto.css" type="text/css" media="screen" charset="utf-8" />
<script src="js/jquery.prettyPhoto.js" type="text/javascript" charset="utf-8"></script>
Then put this code on your page
<script type="text/javascript" charset="utf-8">
$(document).ready(function(){
$("a[rel^='prettyPhoto']").prettyPhoto();
});
</script>
The docs say to put it on the bottom of the page but you (should) also put it on the header.
And then put the thumbnails with links to the actual images. PrettyPhoto will take care of everything else. Do note the rel="prettyPhoto[my_gal]"
<a href="img/full/1.jpg" rel="prettyPhoto[my_gal]" title="Caption 1">
<img src="images/thumbnails/t_1.jpg" width="60" height="60" alt="Red round shape" />
</a>
You can customize it further and should really read the manual here.

Click through images

I would like to know the best way to add a next and back button to click through my images. The images currently scroll left & right when you roll over a hotspot.
I have tried adding anchors to images, which works but is a bit messy.
Here is my code:
<div class="scrollWrapper" >
<div class="scrollableArea" >
<div class="boxer">
<img src="img/apples" />
</div>
<div class="boxer">
<img src="img/apples" />
</div>
<div class="boxer">
<img src="img/apples" />
</div>
</div>
</div>

Easiest way is to use a plugin to handle your slideshow, I like Malsup's cycle plugin, here's an example of what you're trying to do: http://jquery.malsup.com/cycle/int2.html

Instead of using a plugin, read this: http://blog.wearelaunchbox.com/?p=1029
This is great tutorial on how to make your own slider that you're talking about with very little jQuery. Let me know if this helps.
EDIT: Here is a jsfiddle running the right function how you want it, reworked from the tutorial.. You can take this code and rewrite the same function to make it go the other way.
http://jsfiddle.net/Ug3fu/3/

Why does the Youtube API remove local div and add its own?

I am working on a youtube search engine. Everything works okay on the back end but I have hit a wall because Youtube adds a div like so:
<div class="item">
</div>
Around the video and removes my div. I have no way of pin pointing why this happens but I have read from other threads that this is not the first time someone has encountered a problem like this.
It would be much appreciated if you could help out!!

make another div - a 'victim' which the YT script would 'eat' and would leave what you need. For example, now you have:
<div id='pagewrapper'>
<div id='DivForYouTube'>
</div>
</div>
let's say you need to save 'DivForYouTube' and now YouTube destroys it and sets its own.
So my idea would be to create another (victim) div, which YouTube would eat and the neede one - would rest.
<div id='pagewrapper'>
<div id='DivForYouTube'>
<div id='specialVictimDivWhereYouSetYouTube'>
</div>
</div>
</div>
What whould you say?