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Load clicked image only

I have a CSS lightbox gallery on my website, however it loaded the thumbnails and the large images at the same time.
Below are the contents of my various files;
HTML:
<div class=galerie>
<img data-src="/images/large-image.jpg">
<img data-src="/images/large-image.jpg">
<img data-src="/images/large-image.jpg">
<img data-src="/images/large-image.jpg">
</div>
CSS:
.lightbox{display:none;position:fixed;z-index:10001;width:100%;height:100%;text-align:center;top:0;left:0;background:black;background:rgba(0,0,0,0.8)}
.lightbox img{max-width:100%;max-height:100%}
.lightbox:target{display:block;outline:none}
I've added a script (jQuery):
<script>
$("a.galimg").click(function() {
$(".lightbox").each(function() {
$(this).find("img").attr("src", $(this).find("img").attr("data-src"));
});
});
</script>
And now the large files are loaded only after I click a thumbnail.
The problem is that they all load at once, and I want only the clicked one to load at a time.
Is there a way to do this?
I know the each function does that, is there any other function I could use?

I'm not sure why you want to do something like this (would be easier if you post a link to your site) but i'll try to help.
Just don't use 'each' function. So your code should look something like this:
$("a.galimg").click(function() {
var imgID = $(this).attr('href');
$(imgID).attr("src", $(this).data('srcbig'));
});
And for HTML:
<div class=galerie>
<img src=/images/thumbnail.jpg /><img src="" alt="remember about me">
</div>
You could even delete the second 'a href' and image and just create it dynamically. It all depends on how your lightbox library works and what you need.

Attr sets an attribute, if you're trying to use it, I would go with something like this. I'm not sure what you're trying to set the attribute to, but this is the syntax:
<script>
$("a.galimg").click(function() {
$(this).attr("data-src", "your desired data attribute");
})
});
</script>
http://www.w3schools.com/jquery/html_attr.asp

Load SoundCloud Iframe when seen

I have several SoundCloud iframes in a div. I am looking to load them only when the div is being seen. Currently I am loading them through a method that I found online which loads them one by one but still doesn't really do me justice.
What I am looking to do is to lower the load time on the site when its loaded. Since SoundCloud slows the website down this should make it faster.
Something close to eager loading for iframes.
Here is what I have so far :
HTML
<div class="gallery-cell">
<div class="div-img-content">
<div class="soundcloud-wrapper" id="236517781"></div>
</div>
<div class="div-icon-name">
<img src="<?php bloginfo('template_url')?>/assets/gallery_content/icon-music.png" alt="">
Terryl E
</div>
</div>
JS
function loadSoundcloud () {
$(".soundcloud-wrapper").each(function() {
var URL = $(this).attr('id');
var htm = '<iframe width="100%" height="200px" src="https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/' + URL +'&auto_play=false&hide_related=false&show_comments=false&show_user=false&show_reposts=false&visual=true" frameborder="0"></iframe>';
$(this).html(htm).fitVids().removeClass('.loading');
});
}

With the encouragement of Melvita, I went with lazysizes and dropped my load time by half!. It also reduced the the initial request from 400 to 48.
Thanks so much.

javascript photo gallery using image onclicks and div containers

I am trying to create a simple javascript photo gallery. First I used thumbnails of the images I wanted to use in the HTML. The HTML looks like this
<div id="imgs">
<img onClick="gallery()" src="images/photo25thumbnail.jpg">
<img onClick="gallery()" src="images/photo43thumbnail.jpg">
<img onClick="gallery()" src="images/photo46thumbnail.jpg">
<img onClick="gallery()" src="images/photo47thumbnail.jpg">
<img onClick="gallery()" src="images/photo61thumbnail.jpg">
</div>
<div id="display">
<div>
</body>
</html>
So when the user clicks on the image it is supossed to trigger the function gallery. Here is my javascript code
function gallery()
{
var img1 = document.getElementById("display")
.innerHTML="<a href='#'><img src='images/photo25.jpg'></a>";
var img2 = document.getElementById("display")
.innerHTML ="<a href='#'><img src='images/photo43.jpg'></a>";
var img3 = document.getElementById("display")
.innerHTML="<a href='#'><img src='images/photo46.jpg'></a>";
var img4 = document.getElementById("display")
.innerHTML="<a href='#'><img src='images/photo47.jpg'></a>";
var img5 = document.getElementById("display")
.innerHTML="<a href='#'><img src='images/photo61.jpg'></a>";
}
But for some reason when the I click on one of the images it only shows the last image in the div container. I am obviously doing something wrong but I feel like I am kind of on the right track. Help please.

Whats the last thing that happens in you function?
You need to pass the image you want a parameter e.g.
gallery(1);
And the then get you function to show image 1:
function gallery(img_num){
//show image number img_num
}
There's many other things I could say about your code about inline javascript etc. but you can google that there are many sites that can explain that.

Put yourself on your program's place: you take the element with id "display" and put into it first photo, then 2nd and so on till the 5th.
Doesn't matter which photo was clicked. You do always the same and take 5th photo in the result.

i think this may help you
Live Demo Click Here
HTML
<div id="imgs">
<img id="imgs1" alt="adf" src="http://i2.wp.com/img.timeinc.net/time/daily/2013/1311 /232_int_afghanistan_1109.jpg?resize=200%2C133">
<img id="imgs2" src="http://i0.wp.com/img.timeinc.net/time/daily/2013/1311/232_ent_thor_1110.jpg?resize=200%2C133">
</div>
<div id="display">
<div>
JQuery
$(document).ready(function () {
$("#imgs1").click(function() {
$("#display").html("<a href='#'><img src='http://timeglobalspin.files.wordpress.com/2013/11/de7f94520e744ada949e8f0759daf783-0.jpg?w=1393'></a>");
});
$("#imgs2").click(function() {
$("#display").html("<a href='#'><img src='http://cinepop.com.br/wp-content/uploads/2013/10/Thor-O-Mundo-Sombrio-4-650x400.jpg'></a>");
});
});
For Live Demo Click Here
If this is what you need put a Reply me..

javascript - swap url for download link

i have a simple html site where at the top is a main image with a download button.
The download works with the html5 download attribute.
Now i have some thumbnails underneath the main image - which when clicked replace the main image with the thumbnail image.
Following issue: I use the same javascript code to also replace the url of the download button with the thumbnails url, but when clicking the download button it still opens the hardcoded download link from the html instead of using the replaced url.
HTML
<div class="dwnldcntnr">
<img src="imgage1.jpg" alt="Image Title 1" />
</div>
<div id="btncntnr">
<a href="imgage/image1.jpg" download="image1.jpg">
<button id="btn">Download</button></a>
</div>
<div class="itemcntnr">
<a href="image2.jpg" title="2.jpg">
<img src="image2.jpg" />
</a></div>
JS code for replacing download url with thumbnail url
<script type="text/javascript">
$(document).ready(function() {
$('.itemcntnr a').click(function() {
var path = $(this).attr('href');
$('#btncntnr a').attr('href', path)
.attr('download', $('a', this).attr('title'));
return false;
});
});
</script>

Don't put hard coded href for the link in html instead try to add it on $(document).ready
Also I agree with ahren that you should never put button inside an a tag. Instead apply styles to a tag so that it will look like a button

Try replacing the whole DOM element.
I don't think you should be nesting a button inside an a tag, as they're both elements that have native interactivity. You'll most likely come across HTML parsing errors in earlier versions of IE.
$('.itemcntnr a').click(function() {
var $this = $this.clone().empty().html('Download');
$('#btncntnr a').replaceWith($this);
return false;
});

how to prevent fancybox from deleting the clicked thumbnail

Fist time using fancybox and it's not going so well.. starting to wish I didn't bother with it.
I have some thumbnails in a row, fine, then when I click one it opens the THUMBNAIL instead of the link whats worse it DELETES the thumbnail from the DOM. I've dug around in the fancybox src for the issue but there's a lot of it and I'll probably end up killing functionality so I thought I'd post here.
heres the code:
The raw HTML comes from CMS looking like:
<img src="http://blah..blah..from..flickr..001_s.jpg" alt="my image one" class="flickr-square" title="test image" longdesc="" data-url="http://blah..blah..flickr..detail..page" data-orig="http://blah..blah..flickr..big..001_b.jpg">
<img src="http://blah..blah..from..flickr..002_s.jpg" alt="my image one" class="flickr-square" title="test image" longdesc="" data-url="http://blah..blah..flickr..detail..page" data-orig="http://blah..blah..flickr..big..002_b.jpg">
I then run some stuff in backbone view render, the important bit is this:
var imgs = this.$el.find("img"); //:a jquery group of the img elements above
this.content = this.$el.find("span.postcontent");
//empty current
this.content.empty();
//make replacement
for(i= 0;i<imgs.length;i++)
{
var curImg = $(imgs[i]);
var curLink = $("<a/>");
curLink.attr("href",curImg.attr('data-orig'))
curLink.append(curImg);
curLink.on("click",function(e){
e.preventDefault();
$.fancybox.open(imgs)
});
this.content.append(curLink)
}
I now have rendered html like this:
<a href="http://blah..blah..flickr..big..001_b.jpg">
<img src="http://blah..blah..from..flickr..001_s.jpg" alt="my image one" class="flickr-square" title="test image" longdesc="" data-url="http://blah..blah..flickr..detail..page" data-orig="http://blah..blah..flickr..big..001_b.jpg">
</a>
<a href="http://blah..blah..flickr..big..002_b.jpg">
<img src="http://blah..blah..from..flickr..002_s.jpg" alt="my image one" class="flickr-square" title="test image" longdesc="" data-url="http://blah..blah..flickr..detail..page" data-orig="http://blah..blah..flickr..big..002_b.jpg">
</a>
So far so good... now, when I click the link/thumb it does the fancybox thinggy but shows the THUMBNAIL not the linked image, tiny in the middle in it's lightboxy thing and whats really annoying is that the clicked thumbnail in the page itself has now been completely removed from the dom ie.:
<a href="http://blah..blah..flickr..big..001_b.jpg">
///THIS IS MISSING COMPLETELY..... ggggggrrrrr
</a>
<a href="http://blah..blah..flickr..big..002_b.jpg">
<img src="http://blah..blah..from..flickr..002_s.jpg" alt="my image one" class="flickr-square" title="test image" longdesc="" data-url="http://blah..blah..flickr..detail..page" data-orig="http://blah..blah..flickr..big..002_b.jpg">
</a>

I've never seen Fancybox used like that. Normally, you don't need to trigger $.fancybox.open like that. You can just bind fancybox() to the <a> tags.
HTML:
<a href="big-image.jpg" class="fancybox">
<img src="thumbnail.jpg">
</a>
JavaScript:
$('.fancybox').fancybox();
Try just using that function after you've got the DOM to look like that.
[edit]
I couldn't get your DOM manipulation to quite work, but I tested with this fiddle, and it seems to be working: http://jsfiddle.net/haRnQ/4/
NOTE: I didn't import the styles or images for the demo, so it will be unstyled, but it still works.

I'm answering and voting up the previous two because they both helped but were not the definitive answer. The documentation was not clear that if you use only the "group" as a jquery array you must also specify options therefore the correnct answer is to do this (passing two arguments):
$.fancybox.open(imgs,
{
href:this.href,
title:curImg.attr("title")
}
);

Try changing this
$.fancybox.open(imgs)
by this
$.fancybox({
href: this.href
});
because imgs is the collection of your thumbnails (all <img> elements), which are moved to fancybox on click but not moved back after close.
In any case I would recommend you to add a class to <a> otherwise any other anchor you may have in your page would try to open fancybox.

I believe Fancybox prefers wrapping your images in an anchor. This is important to note as Fancybox removes the anchor when activating a slide show to prevent clicking on the anchor when the modal is active.
Calling FB from the thumb behaves like you have experienced by deleting the thumb and not recovering it after the modal is closed.
This is my typical FB setup (not a thumb gallery):
<img src="image1.jpg" alt="" />
<div style="display: none">
...
</div>