Develop Reference

Loop through element and change based on link attribute

Trying to figure this out. I am inexperienced at jQuery, and not understanding how to loop through elements and match one.
I have 3 divs:
<div class="first-image">
<img src="images/first.png">
</div>
<div class="second-image">
<img src="images/second.png">
</div>
<div class="third-image">
<img src="images/third.png">
</div>
And off to the side, links in a div named 'copy' with rel = first-image, etc.:
...
Clicking the link will fade up the image in the associated div (using GSAP TweenMax)
Here is the function I've been working on to do this... but I am not fully understanding how to loop through all the "rel" elements, and make a match to the one that has been clicked on.
<script>
//pause slideshow on members to ledger when text is clicked, and show associated image
$(function() {
$('.copy').on('click','a',function(e) {
e.preventDefault();
var slideName = $(this).attr('rel');
$("rel").each(function(i){
if (this.rel == slideName) {
console.log(this);
}
});
//var change_screens_tween = TweenMax.to('.'+slideName+'', 1, {
//autoAlpha:1
//});
});
});
</script>
What am I doing wrong? I don't even get an error in my browser. :-(
Thanks to the answer below, I got farther. Here is my revised code.
$('[rel]').each(function(k, v){
if (v == slideName) {
var change_screens_tween = TweenMax.to('.'+slideName+'', 1, {
autoAlpha:1
});
} else {
var change_screens_tween = TweenMax.to('.'+slideName+'', 1, {
autoAlpha:0
});
}
});
});
This is starting to work, but makes the screenshots appear and then instantly fade out. And it only works once. Any thoughts?

Add brackets around rel, like so:
$('[rel]').each(function() {
if ($(this).attr('rel') == slideName) {
console.log(this);
}
});

How do I apply jQuery's slideToggle() to $(this) and do the opposite to all other elements?

What I'd like to do is have all elements of class collapsible_list not displayed by default (with one exception... see below*), and then toggle their display when their parent <div class="tab_box"> is clicked. During the same click, I'd also like for every other element of class collapsible_list to be hidden so that only one of them is expanded at any given time.
*Furthermore, when the page initially loads I'd also like to check to see if an element of collapsible_list has a child a element whose class is activelink, and if there is one then I'd like that link's parent collapsible_list element to be the one that's expanded by default.
Here's some sample html code:
<style>
.collapsible_list {
display: none;
}
.collapsible_list.active {
display: block;
}
</style>
<div id="sidebar">
<div class="tab_box">
<div class="collapsible_tab">2014</div>
<div class="collapsible_list panel-2014">
1
2
3
</div>
</div>
<div class="tab_box">
<div class="collapsible_tab">2013</div>
<div class="collapsible_list panel-2013">
<a class="activelink" href="/2013/1">1</a>
2
3
</div>
</div>
</div>
And here's where I'm currently at with the javascript (although I've tried a bunch of different ways and none have worked like I'd like them to):
$(document).ready(function() {
// This looks redundant to me but I'm not sure how else to go about it.
$(".collapsible_list").children("a.activelink").parent(".collapsible_list:not(.active)").addClass("active");
$(".tab_box").click(function() {
$(this).children(".collapsible_list").toggleClass("active").slideToggle("slow", function() {
$(".collapsible_list.active:not(this)").each(function() {
$(this).slideToggle("slow");
});
});
});
});
I hope that's not too confusing, but if it is then feel free to let me know. Any help is much appreciated.

Since you have a dom element reference that needs to be excluded use .not() instead of the :not() selector
jQuery(function ($) {
// This looks redundant to me but I'm not sure how else to go about it.
$(".collapsible_list").children("a.activelink").parent(".collapsible_list:not(.active)").addClass("active").show();
$(".tab_box").click(function () {
var $target = $(this).children(".collapsible_list").toggleClass("active").stop(true).slideToggle("slow");
//slidup others
$(".collapsible_list.active").not($target).stop(true).slideUp("slow").removeClass('active');
});
});
Also, instead of using the slide callback do it directly in the callback so that both the animations can run simultaniously
Also remove the css rule .collapsible_list.active as the display is controlled by animations(slide)

Try This.
$('.collapsible_tab a').on('click', function(e){
e.preventDefault();
$('.collapsible_list').removeClass('active')
$(this).parent().next('.collapsible_list').toggleClass('active');
});
Fiddle Demo

I think your code would be less complicated if you simply remembered the previously opened list:
jQuery(function($) {
// remember current list and make it visible
var $current = $('.collapsible_list:has(.activelink)').show();
$(".tab_box").on('click', function() {
var $previous = $current;
// open new list
$current = $('.collapsible_list', this)
.slideToggle("slow", function() {
// and slide out the previous
$previous.slideToggle('slow');
});
});
});
Demo

Show div once clicked and hide when clicking outside

I'm trying to show the #subscribe-pop div once a link is clicked and hide it when clicking anywhere outside it. I can get it to show and hide if I change the:
$('document').click(function() {
TO
$('#SomeOtherRandomDiv').click(function() {
HTML:
<div id="footleft">
Click here to show div
<div id="subscribe-pop"><p>my content</p></div>
</div>
Script:
<script type="text/javascript">
function toggle_visibility(id) {
var e = document.getElementById("subscribe-pop");
if(e.style.display == 'block')
e.style.display = 'none';
else
e.style.display = 'block';
}
}
$('document').click(function() {
$('#subscribe-pop').hide(); //Hide the menus if visible
});
$('#subscribe-pop').click(function(e){
e.stopPropagation();
});
</script>

You have to stop the event propagation in your container ('footleft' in this case), so the parent element don't notice the event was triggered.
Something like this:
HTML
<div id="footleft">
<a href="#" id='link'>Click here to show div</a>
<div id="subscribe-pop"><p>my content</p></div>
</div>
JS
$('html').click(function() {
$('#subscribe-pop').hide();
})
$('#footleft').click(function(e){
e.stopPropagation();
});
$('#link').click(function(e) {
$('#subscribe-pop').toggle();
});
See it working here.

I reckon that the asker is trying to accomplish a jquery modal type of display of a div.
Should you like to check this link out, the page upon load displays a modal div that drives your eye into the center of the screen because it dims the background.
Moreover, I compiled a short jsFiddle for you to check on. if you are allowed to use jquery with your requirements, you can also check out their site.
Here is the code for showing or hiding your pop-up div
var toggleVisibility = function (){
if($('#subscribe-pop').is(":not(:visible)") ){
$('#subscribe-pop').show();
}else{
$('#subscribe-pop').hide();
}
}

Changing $(document).click() to $('html').click() should solve the main problem.
Secondly, you do not need the toggle_visibility() function at all, you can simply do:
$('#subscribe-pop').toggle();
Ref: changed body to html as per this answer: How do I detect a click outside an element?

hide one div when another is showing in jQuery?

I am trying to hide a div when another one is visible.
I have div 1 and div 2.
If div 2 is showing then div 1 should hide and if div 2 is not showing then div 1 should be visible/unhide.
The function would need to be function/document ready upon page load.
I've tried this but I'm not having any luck, can someone please show me how I can do this.
<script>
window.onLoad(function () {
if ($('.div2').is(":visible")) {
$(".div1").fadeOut(fast);
} else if ($('.div2').is(":hidden")) {
$('.div1').fadeIn(fast);
}
});
</script>

Add a class of hidden to each div, then toggle between that class using jQuery. By the way, window.onload is not a function, it expects a string like window.onload = function() {}. Also, put fast in quotations. I don't know if that's required, but that's how jQuery says to do it.
<div class="div1"></div>
<div class="div2 hidden"></div>
.hidden { display: none }
$(document).ready(function() {
if($(".div1").hasClass("hidden")) {
$(".div2").fadeIn("fast");
}
else if($(".div2").hasClass("hidden")) {
$(".div1").fadeIn("fast");
}
});

You should pass a string to the .fadeIn() and .fadeOut() methods.
Instead of .fadeIn(fast) it'll be .fadeIn("fast"). Same for .fadeOut().
And in general since you're already using jQuery it's better to wrap your code like this:
$(function () {
// Code goes here
});

It looks like you're using jquery selectors (a javascript library). If you're going to use jquery make sure the library is loaded properly by including it in the document header (google makes this easy by hosting it for you <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>)
With jQuery loaded you can do it like this
$(document).ready(function(){
if ($('.div1').is(":visible")) {
$('div2').hide();
}
else if ($('.div2').is(":visible")) {
$('div1').hide();
}
});
WORKING EXAMPLE: http://jsfiddle.net/HVDHC/ - just change display:none from div 2 to div 1 and click 'run' to see it alternate.

You can use setTimeout or setInterval to track if these divs exists
$(function() {
var interval = window.setInterval(function() {
if($('#div2').hasClass('showing')) {
$('#div1').fadeOut('fast');
}
if($('#div2').hasClass('hidden')) {
$('#div1').fadeIn('fast');
}
}, 100);
// when some time u don't want to track it
// window.clearInterval(interval)
})
for better performance
var div1 = $('#div1')
, div2 = $('#div2')
var interval ....
// same as pre code

How to detect mouseleave() on two elements at once?

Answer can be in vanilla js or jQuery. I want to hide a div with the id "myDiv" if the user is no longer hovering over a link with the id "myLink" or a span with the id "mySpan". If the user has his mouse over either element "myDiv" will still show, but the second the user is not hover over either of the two (doesn't matter which element the user's mouse leaves first) "myDiv" will disappear from the face of existence.
In other words this is how I detect mouse leave on one element:
$('#someElement').mouseleave(function() {
// do something
});
but how to say (in a way that will actually work):
$('#someElement').mouseleave() || $('#someOtherElement').mouseleave()) {
// do something
});
How to detect this?

Something like this should work:
var count = 0;
$('#myLink, #mySpan').mouseenter(function(){
count++;
$('#myDiv').show();
}).mouseleave(function(){
count--;
if (!count) {
$('#myDiv').hide();
}
});
jsfiddle

You could use a multiple selector:
$("#someElement, #someOtherElement").mouseleave(function() {
// Do something.
});

You can beautifully use setTimeout() to give the mouseleave() function some "tolerance", that means if you leave the divs but re-enter one of them within a given period of time, it does not trigger the hide() function.
Here is the code (added to lonesomeday's answer):
var count = 0;
var tolerance = 500;
$('#d1, #d2').mouseenter(function(){
count++;
$('#d3').show();
}).mouseleave(function(){
count--;
setTimeout(function () {
if (!count) {
$('#d3').hide();
}
}, tolerance);
});
http://jsfiddle.net/pFTfm/195/

I think, it's your solution!!!
$(document).ready(function() {
var someOtherElement = "";
$("#someElement").hover(function(){
var someOtherElement = $(this).attr("href");
$(someOtherElement).show();
});
$("#someElement").mouseleave(function(){
var someOtherElement= $(this).attr("href");
$(someOtherElement).mouseenter(function(){
$(someOtherElement).show();
});
$(someOtherElement).mouseleave(function(){
$(someOtherElement).hide();
});
});
});
----
html
----
<div id="someElement">
<ul>
<li>element1</li>
<li>element2</li>
</ul>
</div>
<div id="tab1" style="display: none"> TAB1 </div>
<div id="tab2" style="display: none"> TAB1 </div>

While the answer from lonesomeday is perfectly valid I changed my html to have both elements in one container. I originally wanted to avoid this hence I had to do more refactoring for my clients in other html templates, but I think it will pay out on the long term.
<div id="my-container">
<div class="elem1">Foo</div>
<div class="elem2">Bar</div>
</div>
$('#my-container').mouseleave(function() { console.log("left"); });