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How can I toggle or hide CSS pseudo-elements on event (e.g., click)?

Background
I have an HTML div which contains a ‘tooltip’-like feature (i.e., a text box pops up when a certain element is clicked or hovered over); this tooltip has decorative pseudo-elements to make it look like a ‘speech bubble,’ added in css as :before and :after .
I have a JS script, which is intended to show and hide the tooltip and decoration, in response to click events (i.e., toggle them between ‘show’ and ‘hide’ states).
Problem
I can’t get the decorative pseudo-elements to hide when the tooltip is hidden; as pseudo-elements, they are not part of the DOM and so I can’t use normal selectors to manipulate them.
When the tooltip is hidden on click, the decorative pseudo-elements persist, which is not a usable result.
I can’t do away with the decorative elements, they are part of the work specification.
Approach tried so far
Based on this question, my thought was to add an empty span with its own class, to which I’d prepend and append these pseudo-elements. Then, add or remove the class on click based on whether it exists already, or not.
I have also tried setting the class to which the pseudo-elements are pre/appended to display:none on click, but this also seems not to work
However, I cannot convince the pseudo-elements to hide on click.
I’ve included a screenshot of what these remnant pseudo-elements look like in the live environment.
Note: I tried to work up a running simulation for the purpose of this question, but I wasn’t able to and the original css file is massive; the code included below is for reference only.
All guidance is much appreciated!
const barContainer = document.querySelector(".bar-container");
const decorationElement = document.querySelector("#decoration");
document.addEventListener('click', function(event) {
console.log('click event listener triggered');
if (event.target.closest('.link') || event.target.classList.contains('link')) {
if (barContainer.classList.contains('open')) {
barContainer.classList.remove('open')
decorationElement.classList.remove('decoration')
document.querySelector('.tooltip-container').setAttribute('style', 'display:none');
} else {
barContainer.classList.add('open')
decorationElement.classList.add('decoration')
document.querySelector('.tooltip-container').setAttribute('style', 'display:block');
}
} else {
barContainer.classList.remove('open')
decorationElement.classList.remove('decoration')
document.querySelector('.tooltip-container').setAttribute('style', 'display:none');
}
});
.foo-container {
height: auto;
position: relative;
}
.bar-container {
height: auto;
position: relative;
text-align: center;
}
.bar-container:hover .tooltip-container,
.tooltip-container:hover,
.bar-container.open .tooltip-container {
position: absolute;
display: block;
text-align: left;
background-color: #ffffff;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
bottom: 50px;
right: 5%;
border-radius: 4%;
font-weight: 300;
max-width: 90%;
font-size: 14px;
padding: 20px 0;
}
/*the below two rule sets create the rotated 'decoration' */
.bar-container:hover .tooltip-container:before,
.tooltip-container:hover:before,
.bar-container.open .tooltip-container:before,
.foo-container .bar-container:hover .decoration:before {
content: "";
width: 65px;
height: 35px;
position: absolute;
overflow: hidden;
transform: rotate(-180deg);
z-index: 10;
bottom: 0;
left: 170px;
background-color: white;
}
.foo-container .bar-container.open .decoration:before,
.foo-container .bar-container:hover .decoration:before {
content: "";
position: absolute;
width: 30px;
height: 30px;
background: #fff;
transform: rotate(45deg);
left: 30px;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
z-index: 2;
top: -42px;
}
/* end 'deocration' */
<div class="foo-container">
<div class="bar-container">
<p>text <span class='link'>the-link<span id='decoration' class='decoration'></span></span>
</p>
<div class='tooltip-container'>
<p>lorem </p>
</div>
</div>
</div>
Screenshot of the undesirable 'persistent pseudo-elements' behavior -->

Target upper div with lower div

I want the background of upperdiv to become red when lowerdiv has the .active class:
<div id="upperdiv">Text case</div>
<div id="lowerdiv" class="active">IMAGE CAROUSEL</div>
.active is being added by JavaScript. Example image.
I tried:
#upperdiv + #lowediv .active {
background: red;
}
but it's not working.
Is this possible with CSS or jQuery?

If I understand the question correctly you are trying to select the previous sibling. There is no way to do this using CSS. However, using JavaScript you can achieve the desired result. When you add the active class to the lower div, use your script to change the background color of the upper div.
See Is there a "previous sibling" CSS selector? for more information.

First I'd like to warn that OP doesn't ask to hack impossible CSS thing like previous sibling styling. So I'd ask people to read carefully question before downvote or abuse this answer.
There are two ways to get it with CSS, but you can use these ways for specific cases only. Common requirement is that both divs should come one by one.
First way is to swap divs using position attributes. I mean that lower div should come first in your HTML:
<div id="lowerdiv" class="active">IMAGE CAROUSEL</div>
<div id="upperdiv">Text case</div>
div {
position: absolute;
width: 100%;
height: 50px;
margin: 0;
left: 0;
background: orange;
}
#upperdiv {
margin-top: 0px;
}
#lowerdiv{
margin-top: 50px;
}
#lowerdiv.active + #upperdiv {
background: red;
}
<div id="lowerdiv" class="active">IMAGE CAROUSEL</div>
<div id="upperdiv">Text case</div>
And second way is to use ::before pseudo-element to put it under upperdiv as a background:
div {
position: relative;
width: 100%;
height: 50px;
margin: 0;
left: 0;
background: transparent;
}
#lowerdiv{
background: orange;
}
#lowerdiv.active:before {
content: " ";
display: block;
position: absolute;
height: 100%;
width: 100%;
bottom: 100%;
background: red;
z-index: -1;
}
<div id="upperdiv">Text case</div>
<div id="lowerdiv" class="active">IMAGE CAROUSEL</div>
Third way really exists but this is beyond conditions of the question.

How can I allow a click to pass through a div but still react to hover?

Say I have divA that partially overlaps divB. How can I allow clicks on divA to pass through to divB but still have hover fired when hovering over divA?
I'm aware of pointer-events:none; and this makes the clicks pass through but it also prevents the hover.
I have also tried the below, but it did not allow clicks to fall through
$(document).on('click', '.feedback-helper', function(e){
e.preventDefault();
})
Picture the relation of the divs like:
Here is the why of it (read as: "let's avoid an X Y problem"):
I'm working on an implementation of feedback.js
To see the issue:
view the feedback.js demo
click the feedback button in the bottom right
draw a box on the screen to highlight a section
click the "black out" button
try to draw a box inside the first box you can't because the click is blocked by the first box
I need to allow drawing a blackout box over a highlighted area but if I set pointer-events:none; I will lose other hover functionality I have on those elements.
Here is a jsFiddle example
All solutions welcome

I checked your example page and if you set a slightly lower z-index on data-type="highlight" that could take care of the problem, try a z-index of 29990 in comparison to your current 30000. This should allow you to target the highlighted feedback area and overlay it with the blackout elements.

You could get the click event for the overlaying element to initiate the click event for the underlying element.
Native JS Example:
document.getElementById('divA').addEventListener('click', function() {
alert('Clicked A');
});
document.getElementById('divB').addEventListener('click', function() {
var event = document.createEvent('HTMLEvents');
event.initEvent('click', true, false);
document.getElementById('divA').dispatchEvent(event);
});
div {
cursor: pointer;
border: 1px solid black;
}
#divA {
height: 300px;
width: 300px;
background: whitesmoke;
}
#divB {
height: 30px;
width: 30px;
background: grey;
position: absolute;
left: 100px;
top: 100px;
}
#divB:hover {
background: green;
}
<div id="divA"></div>
<div id="divB"></div>
jQuery Example:
$('#divA').on('click', function() {
alert('Clicked A');
});
$('#divB').on('click', function() {
$('#divA').trigger('click');
});
div {
cursor: pointer;
border: 1px solid black;
}
#divA {
height: 300px;
width: 300px;
background: whitesmoke;
}
#divB {
height: 30px;
width: 30px;
background: grey;
position: absolute;
left: 100px;
top: 100px;
}
#divB:hover {
background: green;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="divA"></div>
<div id="divB"></div>

Another option is to use a pseudo element instead. Perhaps that will do what you need.
$('#toggleBlack').on('click', function() {
$('#divA').toggleClass('hidden');
});
div {
border: 1px solid black;
}
#divA {
background: whitesmoke;
position: relative;
}
#divA.hidden:before {
position: absolute;
content: ' ';
top: 0;
left: 0;
right: 0;
bottom: 0;
background: red;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="divA">Highlight the text once I'm hidden and cut/copy/drag</div>
<br />
<br />
<button id="toggleBlack">Toggle Hidden</button>

Disable Anchor Within Hover Div on Mobile Until Open

I've searched high and low but can't find a solution to this exact problem.
On a desktop browser, when the user hovers over an image, a div appears and they can click the link within the div if they want. However, on a mobile device, the hover is triggered by a click. If the user clicks in just the right spot, even though the div isn't visible yet, they can accidentally click the anchor and navigate away from the page. (In other words, the div goes from display:none to display:block at the same time that the link is clicked.)
I want to prevent that accidental click from happening on mobile browsers, however I still want the link to be usable once the div is visible.
My code:
<style>
.staffpic {
position: relative;
width: 33.33333%;
height: auto;
}
.staffpic:hover .popup {
display: block;
}
.staffpic img {
display: block;
width: 110px;
height: 110px;
margin: 0 auto;
}
.popup {
display:none;
position: absolute;
bottom: 0;
left: -5px;
width: 100%;
height: 100%;
box-sizing: border-box;
padding: 15px;
background-color: rgba(255, 153, 0, 0.9);
color: #fff;
text-transform: uppercase;
}
</style>
<div class="staffpic">
<img src="/wp-content/uploads/image.jpg" />
<div class="popup">
John Smith, Director<br/>
CityName | Email John
</div>
</div>
Any ideas? HTML, CSS, JS and jQuery solutions are all welcome! (Maybe something more clever than what I can think of using pointer-events:none along with some jQuery?)

I'm actually about to encounter the same problem in a project, and jotted down a potential solution. Haven't tested it yet but it might help you out. The link should only trigger if the element has a display that's not 'none':
var popup = $('.popup'),
display = popup.css('display');
if (!(display === 'none')) {
popup.on('click', function(e) {
e.preventDefault();
});
}

I found a solution but it's not elegant. I wanted to post it in case someone has this problem in the future and just needs something that will work!
I added a fake link in a span with the real link then set new display styles for it and the real link based on the parent span is being hovered over.
<style>
.staffpic {
position: relative;
width: 33.33333%;
height: auto;
}
.staffpic:hover .popup {
display: block;
}
.staffpic img {
display: block;
width: 110px;
height: 110px;
margin: 0 auto;
}
.staffpic a {
display: none; /* Added */
}
.staffpic.link:hover a {
display: inline; /* Added */
}
.staffpic.link:hover .fakelink {
display: none; /* Added */
}
.popup {
display:none;
position: absolute;
bottom: 0;
left: -5px;
width: 100%;
height: 100%;
box-sizing: border-box;
padding: 15px;
background-color: rgba(255, 153, 0, 0.9);
color: #fff;
text-transform: uppercase;
}
</style>
<div class="staffpic">
<img src="/wp-content/uploads/image.jpg" />
<div class="popup">
John Smith, Director<br/>
CityName | <span class="link">Email John<span class="fakelink">Email John</span></span>
</div>
</div>
I'd still love a cleaner solution without all this added html if someone has it.

IE requires double click with custom button

I have a script that is dived as:
HTML:
<div id="wrapper">
<div id="container">
<div id="button">Click me!</div>
<form>
<input type="file" />
</form>
</div>
<div id="notice">File is uploaded!</div>
</div>
JavaScript(JQuery 2):
$(document).ready(function () {
$("input").on("change", function () {
$("div#notice").fadeIn();
//$("form").submit(); //If you want it to submit on your site uncomment this
});
});
CSS:
div#wrapper {
background-color: #ccc;
position: absolute;
width: 300px;
height: 200px;
}
div#wrapper > form > input {
color: rgba(0, 0, 0, 0);
zoom: 1;
filter: alpha(opacity=0);
opacity: 0;
color: rgba(0, 0, 0, 0);
}
div#container {
width: 200px;
height: 20px;
overflow: hidden;
}
div#button, input {
position: absolute;
top: 0px;
left: 0px;
cursor: pointer;
}
div#button {
z-index: 1;
background-color: #AAA;
}
input {
z-index: 2;
background-color: rgba(0, 0, 0, 0);
opacity: 0;
alpha: filter(opacity=0);
font-size: 25px;
color: rgba(0,0,0,0);
filter: alpha(opacity=0);
zoom: 1;
}
div#notice
{
background-color: green;
display: none;
position: absolute;
bottom: 0px;
left: 0px;
}
Note: This issue was there before blur was put to hide the flashing icon in IE.
In Chrome and Firefox the button only requires a single click. In IE 10 it requires a double click, which I don't want. I am trying to think of a way to make it single click.
The only thing I've tried so far is to .render("click") on the input, but that didn't work.
JSFiddle: http://jsfiddle.net/plowdawg/mk77W/

I had the same problem and found different approach. I just made that button be as big as I need with font-size on it. Then person simply can't click on text section.
<div class="divFileUpload">
<input class="fileUpload" type="file" />
</div>
and css:
.divFileUpload {
background-color: #F60;
border-radius: 5px;
height: 50px;
margin-left: auto;
margin-right: auto;
overflow: hidden;
position: relative;
width: 50%
}
.fileUpload {
cursor: pointer;
font-size: 10000px; /* This is the main part. */
height: 100%;
opacity: 0;
position: absolute;
right: 0;
top: 0;
width: 100%
}

To follow up on what SDLion said....
This might be what you see
But really on top of that there is a file upload control that has been made transparent.
Clicking on the browse button brings up the file upload dialog with one click.
In IE You have to double click the text box to the left of it if you want to see the file upload dialog.
Increase the font size of the file input to fill the button image

While #bastos.sergio is right about it happening in the text section there is a way to get around this if you are comfortable using JavaScript.
You will need:
A wrapper div tag
An inner dev tag
Some sort of form input
JQuery (tested on 2.1)
Steps:
Create the "wrapper" div
Create an inner "button " div
Place the form element underneath the inner "button" div
Set the "wrapper" and "inner" divs to the same size
Set overflow:hidden on the wrapper
Create a JQuery script for the "inner" div setting the on click function
In the "inner" function click function call .click() on the input
Seems to work for me in IE 10.
$(document).ready(
function()
{
$("#open_dialog").on("click",function()
{
$("input").click();
});
$("input").on("change",function()
{
alert($("input"));
$("#notice").html("uploading");
});
});
#open_dialog
{
position: relative;
width: 200px;
height: 50px;
color: white;
font-family: "Arial";
font-size: 14pt;
text-align: center;
top: 25px;
margin-top: -.5em;
z-index: 1;
}
#wrapper
{
width: 200px;
height: 50px;
overflow: hidden;
cursor: pointer;
border-radius: 10px;
background: green;
z-index: 0;
}
input
{
margin-top: 100px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="wrapper">
<div id="open_dialog">Click Me</div>
<input type="file" />
</div>
<div id="notice">Nothing to upload</div>

The double click is happening on the text portion of the file upload, like #TravisPessetto stated.
Since it's not possible to hide/remove the text portion out of the file input control, I recommend that you put a regular button over the file input.
See here for more details.

I found another more simple solution, just trigger the event "click" on mousedown for this element only:
$("input").mousedown(function() {
$(this).trigger('click');
})
in order to avoid problems on other browsers, apply this solution to IE only:
if ($.browser.msie && parseInt($.browser.version, 10) > 8) {
$("#your_file_input").mousedown(function(event) {
if (event.which == 1) {
$(this).trigger('click');
}
})
}
here's your jfiddle modified, check it on IE 9-10:
http://jsfiddle.net/7Lq3k/
Edit: example modified in order to limit the event handling for left click only
(see: How to distinguish between left and right mouse click with jQuery for details)

I mixed various solutions to get this one that works for me (on every browser). It's written using LESS nesting.
HTML
<!--/* Upload input */-->
<div class="input-file">
Select image
<input type="file" />
</div>
LESS CSS
/*
* Input "file" type Styling
* Based on http://goo.gl/07sCBA
* and http://stackoverflow.com/a/21092148/1252920
*/
.input-file {
position: relative;
overflow: hidden;
margin: 10px;
input[type="file"] {
opacity: 0;
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
margin: 0;
padding: 0;
cursor: pointer;
width: 100%;
height: 100%;
font-size: 10000px;
}
// For Chrome
input[type=file]::-webkit-file-upload-button {
cursor: pointer;
}
}