Develop Reference

Click Propagation failing in Jquery

For part of the site I'm working on, I have a set of sidebars that can pull out. To have them hide when the users are done with them, I've set up a div with a click event (see below) so that whenever the user clicks somewhere outside of the sidebar, the sidebar closes. The problem that I'm running into, however, is that the click event handler is grabbing the event, running its method, and then the click event seems to stop. I've tried using return true and a few other things I've found around here and the internet, but the click event just seems to die.
$('.clickaway').click(function() {
$('body').removeClass(drawerClasses.join(' '));
return true;
});
EDIT: Here is a fiddle with an example: https://jsfiddle.net/2g7zehtn/1/
The goal is to have the drawer out and still be able to click the button to change the color of the text.

The issue is your .clickaway layer is sitting above everything that's interactive, such as your button. So clicking the button, you're actually clicking the layer.
One thing you could do is apply a higher stacking order for elements you want to interact with, above the .clickaway layer. For example, if we apply position: relative, like this:
.show-drawerHotkey .ColorButton {
position: relative;
}
The element will now be in a higher stacking order (since it comes after the clickaway, and we've applied no z-index to clickaway)
Here's a fiddle that demonstrates: https://jsfiddle.net/2g7zehtn/5/

Using this somewhat famous SO answer as a guide, you can bind to the $(document).mouseup(); event and determine whether certain "toggling" conditions apply:
[EDIT] - Example updated to illustrate clicking a link outside of the containing div.
// Resource: https://stackoverflow.com/questions/1403615/use-jquery-to-hide-a-div-when-the-user-clicks-outside-of-it
var m = $('#menu');
var c = $('#menuContainer');
var i = $('#menuIcon');
i.click(function() {
m.toggle("slow");
});
$(document).mouseup(function(e) {
console.log(e.target); // <-- see what the target is...
if (!c.is(e.target) && c.has(e.target).length === 0) {
m.hide("slow");
}
});
#menuIcon {
height: 15px;
width: 15px;
background-color: steelblue;
cursor: pointer;
}
#menuContainer {
height: 600px;
width: 250px;
}
#menu {
display: none;
height: 600px;
width: 250px;
border: dashed 2px teal;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
I'm a link outside of the container
<div id="menuContainer">
<div id="menuIcon"></div>
<div id="menu"></div>
</div>

Fullscreen video doesn't allow scrolling on firefox

I'm using the fullscreen.js script and in one of my screens I will have a fullscreen Vimeo video. Apparently this will cause issues in FF and prevents me from scrolling up or down as soon as I reach the screen with the video. The issue was submitted to the GitHub page of the script but the author dismissed it as it's a FF issue (https://github.com/alvarotrigo/fullPage.js/issues/803).
I'm using all this with foundation CSS for the responsive video:
<div class="flex-video widescreen vimeo">
<iframe src="<?php the_sub_field('video') ?>"
width="400"
height="225"
frameborder="0"
webkitAllowFullScreen
mozallowfullscreen
allowFullScreen></iframe>
</div>
The bug is this one: https://bugzilla.mozilla.org/show_bug.cgi?id=779286 but I don't see that it was solved on FF 36 on Mac. The issue is not happening on chrome either.
Here is an example of the issue by someone else on the GitHub thread: http://jsbin.com/tunove/1/edit?html,output

The Issue:
The Mozilla bug you are looking at actually refers to the fullscreen mode API, an unrelated API that was fixed. I think the bug report you are looking for is this one:
Bug 1084121 - Mouse wheel event is captured by iframe and not propogated.
Steps to reproduce:
I have a div in which I manually capture mousewheel events, and use
that to scroll the div. Inside of this div, I have an embedded youtube
video, in an iframe.
Actual results:
While scrolling, if the mouse is over the iframe, scrolling no longer
works, because all mouse events, including mouse wheel events, are
captured by the iframe, and are not sent to the parent window.
Expected results:
The mouse wheel event should have been propagated to the parent
window. This is the behavior in chrome and safari.
Since the iframe is on a different domain, there does not appear to be
any feasible workaround for this.
This bug report is still open, and does not appear to be in the process of being implemented.
Also, according to the bug report, this behavior is not defined by any specification.
For what it's worth, I gave this bug report a vote to increase the importance. I agree, this is a user experience problem.
Workarounds:
Unfortunately, as far as directly fixing the wheel event issue goes, the suggestions in that GitHub issue are about all we have for cross-origin iframes. If the framed content were on the same domain or otherwise under your control, you could add another event listener inside the iframe, but Same-Origin Policy prevents this cross-domain.
The only options available to prevent the iframe from stealing the wheel events for cross-origin frames are:
Cover most or all of the iframe with transparent divs.
Use pointer-events: none; on the iframe. This will also prevent clicking on the video at all, so it has the same effect as covering the entire video with a transparent div.
Other Options:
This issue is apparently limited to the wheel events as it is possible to scroll a parent document while scrolling over an iframe.
<iframe src="data:text/html;charset=utf-8,%3Chtml%3E%3Cbody%3E%3Cp%3EScroll%20over%20this.%3C/p%3E%3C/body%3E%3C/html%3E" style="width: 100%; height: 100px;"></iframe>
<div style="background: red; width: 20px; height: 5000px;"></div>
fullPage.js is not structured this way, but if a parent element to the iframe were actually a scrollable element, it would be possible to listen for the scroll event and react to that.
It's a little shaky, but here's an example of something similar using the scroll event instead of the wheel event.
Example (JSFiddle):
var autoScrolling = false;
$('.wrap').on('scroll', function(e) {
if (autoScrolling) {
return;
}
//Get this element and find the number of children.
var $this = $(this);
var children = $this.children('.pane').length;
//Find the height of each pane, and the current position.
var paneHeight = this.scrollHeight / children;
var position = this.scrollTop / paneHeight;
var positionRound = Math.round(position);
//Find the target position.
var positionOff = position - positionRound;
var toShow = null;
if (positionOff < 0) {
toShow = positionRound - 1;
}
else if (positionOff > 0) {
toShow = positionRound + 1;
}
//If scrolling to a new pane, find the next one.
if (toShow !== null) {
autoScrolling = true;
$this.animate({
scrollTop: paneHeight * toShow
}, {
duration: 1000,
complete: function() {
setTimeout(function() {
autoScrolling = false;
}, 500);
}
});
}
});
html,
body {
height: 100%;
width: 100%;
margin: 0;
padding: 0;
}
.wrap {
height: 100%;
width: 100%;
overflow: auto;
}
.pane {
width: 100%;
height: 100%;
position: relative;
}
iframe {
background: white;
border: 0;
outline: 0;
display: block;
position: absolute;
width: 80%;
height: 80%;
left: 10%;
top: 10%;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div class="wrap">
<div class="pane" style="background: red;">
<iframe src="data:text/html;charset=utf-8,%3Chtml%3E%3Cbody%3E%3Cp%3EScroll%20over%20this.%3C/p%3E%3C/body%3E%3C/html%3E"></iframe>
</div>
<div class="pane" style="background: green;">
<iframe src="data:text/html;charset=utf-8,%3Chtml%3E%3Cbody%3E%3Cp%3EScroll%20over%20this.%3C/p%3E%3C/body%3E%3C/html%3E"></iframe>
</div>
<div class="pane" style="background: blue;">
<iframe src="data:text/html;charset=utf-8,%3Chtml%3E%3Cbody%3E%3Cp%3EScroll%20over%20this.%3C/p%3E%3C/body%3E%3C/html%3E"></iframe>
</div>
</div>

Div with dynamic header size and content with scroll bar

I am trying to create a container div with a fixed height which has two divs inside, a header div and a content div. The header can grow dynamically and I want the content div to take the rest of the space. The container div should not exceed the specified size and if the content grow to much then content div should scroll.
My current code is as follows but is not working:
<div id="container">
<div id="header">
<button id="btnHeader" type="button">Increase Header</button>MY HEADER</div>
<div id="content">
<button id="btnContent" type="button">Increase Content</button>MY CONTENT</div>
</div>
#container {
height: 300px;
width: 400px;
max-height: 300px;
background-color: grey;
}
#header {
width: 100%;
height: auto;
background-color: blue;
}
#content {
width: 100%;
height: 100%;
overflow-y: scroll;
background-color: red;
}
Example here: http://jsfiddle.net/ep1qab0v/
What is happening is that the content div always stays the same size and hence make the container div to grow. Any ideas?

http://jsfiddle.net/ep1qab0v/3/ ,
I have updated the fiddle with overflow:hidden on the container div. which keeps it the same size. increase in content adds scroll bar to the content div and increase in header pushes the content div down. If I have understood your requirement correctly this is what you are looking for ?

I have made a fiddle with the answer, but I will also try to explain. jsfiddle Example
For that level of dynamic sizing you will have to use javascript. Since the content is scrollable and the header is not, you will have to create an object or function that is called everytime the header size changes. This way you can test the height of the header against the main container, and change the content box to fit.
I created a simple object that you can use to initialize the boxes when the page loads. Also, that you can call every time the page is resized or the header size is changed.
var sizing = {
height: null,
header: null,
content: null,
//Initializes whatever you need
//just cacheing the header and content
//and setting the height restriction
init: function(){
//Set the height of the users window
//you can change this to whatever you want
//but this is dynamic to the browser window
this.height = window.innerHeight ? window.innerHeight : $(window).height();
//Set header and content elements
//for later use
this.header = $('#header');
this.content = $('#content');
this.resize();
},
//Ressize the boxes to fit
//this needs to be called after
// every change to the header
resize: function(){
this.content.css({
height: (this.height - this.header.height()) + "px"
});
}
};
You need to call the .init() to initialize the object when the page loads
$(document).ready(function(){
//Whatever you need to do
//Initialize the sizing
sizing.init();
});
then you can call it from inside events
$('body').on('click', '#some-element', function(e){
//Do some stuff
//Then resize the divs
sizing.resize();
});
Hope that helps!

content of fixed div changes as other divs scroll past it

I'm trying to fix a div at the top of a layout that will contain a blog post's information (date posted, # of notes, permalink, etc.) and change this information as you scroll down past posts. I'm not sure if it would require any kind of javascript or just some intricate positioning using css. Here's how I would layout the posts. How can I get the specific post information from each post to change within that fixed div as the posts scroll past it?
#container {
width: 960px;
margin: 0px auto;
}
#changingpostinformation {
position: fixed;
margin: 0px auto;
}
<div id="container">
<div id="changingpostinformation">fixed post information div that's information changes as each post below reaches the top of #container</div>
<div class="post">
<h3>Post Title>
<p>This is the body of this example post.</p>
</div>
<div class="post">
<h3>Post Title>
<p>This is the body of this example post.</p>
</div>
</div>

Like #ShankarSangoli says, you should add top: 0;, and also left: 0; to #changingpostinformation (or other values to position it however you like)
You'll need some javascript to find out which post appears first on the page and show its info.
$(function() {
$(window).bind('load resize scroll', function() {
var doctop = $('body').scrollTop();
// loop over all posts, from top to bottom
$('.post').each(function() {
if ($(this).position().top > doctop) {
put_postinfo_in_fixed_div($(this));
return false; // breaks from the loop
}
});
});
});
This function runs once when page is loaded, and also when the window is resized or scrolled.
You need to implement put_postinfo_in_fixed_div() which gets an post div, and does what it says.

Use this CSS:
#changingpostinformation {
position: fixed;
top: 0px;
}

jQuery fade to new image

How can I fade one image into another with jquery? As far as I can tell you would use fadeOut, change the source with attr() and then fadeIn again. But this doesn't seem to work in order. I don't want to use a plugin because I expect to add quite a few alterations.
Thanks.

In the simplest case, you'll need to use a callback on the call to fadeOut().
Assuming an image tag already on the page:
<img id="image" src="http://sstatic.net/so/img/logo.png" />
You pass a function as the callback argument to fadeOut() that resets the src attribute and then fades back using fadeIn():
$("#image").fadeOut(function() {
$(this).load(function() { $(this).fadeIn(); });
$(this).attr("src", "http://sstatic.net/su/img/logo.png");
});
For animations in jQuery, callbacks are executed after the animation completes. This gives you the ability to chain animations sequentially. Note the call to load(). This makes sure the image is loaded before fading back in (Thanks to Y. Shoham).
Here's a working example

$("#main_image").fadeOut("slow",function(){
$("#main_image").load(function () { //avoiding blinking, wait until loaded
$("#main_image").fadeIn();
});
$("#main_image").attr("src","...");
});

Well, you can place the next image behind the current one, and fadeOut the current one so that it looks like as though it is fading into the next image.
When fading is done, you swap back the images. So roughly:
<style type="text/css">
.swappers{
position:absolute;
width:500px;
height:500px;
}
#currentimg{
z-index:999;
}
</style>
<div>
<img src="" alt="" id="currentimg" class="swappers">
<img src="" alt="" id="nextimg" class="swappers">
</div>
<script type="text/javascript">
function swap(newimg){
$('#nextimg').attr('src',newimg);
$('#currentimg').fadeOut(
'normal',
function(){
$(this).attr('src', $('#nextimg').attr('src')).fadeIn();
}
);
}
</script>

Are you sure you're using the callback you pass into fadeOut to change the source attr and then calling fadeIn? You can't call fadeOut, attr() and fadeIn sequentially. You must wait for fadeOut to complete...

Old question but I thought I'd throw in an answer. I use this for the large header image on a homepage. Works well by manipulating the z-index for the current and next images, shows the next image right under the current one, then fades the current one out.
CSS:
#jumbo-image-wrapper
{
width: 100%;
height: 650px;
position: relative;
}
.jumbo-image
{
width: 100%;
height: 100%;
position: absolute;
top: 0px;
left: 0px;
}
HTML:
<div id="jumbo-image-wrapper">
<div class="jumbo-image" style="background-image: url('img/your-image.jpg');">
</div>
<div class="jumbo-image" style="background-image: url('img/your-image-2'); display: none;">
</div>
</div>
Javascript (jQuery):
function jumboScroll()
{
var num_images = $("#jumbo-image-wrapper").children(".jumbo-image").length;
var next_index = jumbo_index+1;
if (next_index == num_images)
{
next_index = 0;
}
$("#jumbo-image-wrapper").children(".jumbo-image").eq(jumbo_index).css("z-index", "10");
$("#jumbo-image-wrapper").children(".jumbo-image").eq(next_index).css("z-index", "9");
$("#jumbo-image-wrapper").children(".jumbo-image").eq(next_index).show();
$("#jumbo-image-wrapper").children(".jumbo-image").eq(jumbo_index).fadeOut("slow");
jumbo_index = next_index;
setTimeout(function(){
jumboScroll();
}, 7000);
}
It will work no matter how many "slides" with class .jumbo-image are in the #jumbo-image-wrapper div.

For those who want the image to scale according to width percentage (which scale according to your browser width), obviously you don't want to set height and width in PIXEL in CSS.
This is not the best way, but I don't want to use any of the JS plugin.
So what can you do is:
Create one same size transparent PNG and put an ID to it as
second-banner
Name your original image as first-banner
Put both of them under a DIV
Here is the CSS structure for your reference:
.design-banner {
position: relative;
width: 100%;
#first-banner {
position: absolute;
width: 100%;
}
#second-banner {
position: relative;
width: 100%;
}
}
Then, you can safely fade out your original banner without the content which placed after your image moving and blinking up and down