Develop Reference

on click function to reveal hover overlay - appears on click but won't disappear on 2nd click

I have a portfolio grid of images and when a user hovers or taps on a mobile a transparent overlay with some text and a button appears
I am using the on click function
It works fine on my touch screen laptop but not on my iOS phone or tablet
The overlay appears on first tap, but when I tap again it does not disappear unless I tap another grid image.
I would like it to disappear on 2nd tap
I have tried various ways of making this work, and the closest I have got it for it to disappear when another grid image is tapped
Here is my code:
HTML
<div class="col-xs-12 col-sm-7"><div class="image-wrap">
<div onclick="on()">
<img src="assets/images/pic.jpg">
<div class="overlay blue">
<h3>Portfolio item 1</h3>
<hr>
<p><strong>Coming Soon</strong><br> some overlay text here</p>
<br>
View Website
</div>
</div>
</div>
</div>
JS
function on() {
document.getElementById("overlay").style.display = "block";
}
function off() {
document.getElementById("overlay").style.display = "none";
}
CSS
.image-wrap {
display: inline-block;
position: relative;
}
.overlay {
position: absolute;
top:0;
left: 0;
width: 100%;
height: 100%;
color:white;
opacity: 0;
transition:opacity .5s ease-out;
text-align: center;
hr {
border: 1px solid #fff;
width: 10%;
}
}
.image-wrap:hover .overlay {
opacity: 1;
}
.red {
background: rgba(102,67,154,0.7);
}
.blue {
background: rgba(23,56,179,0.7);
}
.purple1 {
background: rgba(140,23,179,0.7);
}
.purple2 {
background: rgba(71,13,142,0.7);
}
}
I initially tried this with just CSS which gave me the desired result on all devices apart from iOS!
So I have decided to use the on click function to be more sure it works on all devices. I added the on click function to my existing code which I wrote to be used with CSS, but as I am rather new to JS I am wondering if I have it in the wrong place (the on-click)? I have tried lots of variations but this is the best I can get it to work
Any ideas of suggestions on how I can make the overlay disappear on the 2nd click would be great!
js fiddle
https://jsfiddle.net/49h450g9/14/
Please note: This works fine on touch-screen laptops, just not mobiles!
Thanks!

Your functions on and off on jsfiddle example are not working at all. What happening is your hover effect on normal screen which as the behavior of mobile work like focus on mobile device.
Moreover, from your description here I believe that you have more than one portfolio on your project. So you have several element with the id overlay and multiple use of same id is not validate for html and also will cause JavaScript error.
To let your project work properly follow my list below:
Make sure you have jQuery added on your project (generally before </body>)
Now let us thinks of these portfolio item below
<div class="portfolio">
<img src="images/portfolio-1.jpg" alt="...">
<div class="overlay">Link</div>
</div>
<div class="portfolio">
<img src="images/portfolio-2.jpg" alt="...">
<div class="overlay">Link</div>
</div>
<div class="portfolio">
<img src="images/portfolio-3.jpg" alt="...">
<div class="overlay">Link</div>
</div>
Then give the normal hover css styles inside media query like this. So that it never effect your js styles (I decide medias less than 992px as mobile device):
.portfolio{
background-color: #f1f1f1;
position: relative;
}
.portfolio .overlay{
background-color: rgba(0, 0, 0, 0.7);
display: block;
position: absolute;
top: 0;
left: 0;
opacity: 0;
transition: all 0.3s ease;
width: 100%;
height: 100%;
}
#media all and (min-width:992px){
.portfolio:hover .overlay{
opacity: 1;
}
}
Now with jQuery you can use event while user click any of the .portfolio item and toggle a class on it by which we will add further css to it:
$(document).ready(function(){
'use strict';
$(.portfolio).on('click', function(){
$(this).siblings('.portfolio').removeClass('hovered');
$(this).toggleClass('hovered');
});
});
Now it will add hovered class on 1st click and remove the hovered class on 2nd click. Also it will remove .hovered from other portfolio items. Now add the same css to it as the hover effect:
.portfolio.hovered .overlay{
opacity: 1;
}

Try this:
$("*").on("click, touchend", function(e) { $(this).focus(); });
or to achieve the opposite;
$("*").on("click touchend", function(e) { $(this).hover(); });
However the hover event doesn't work well on ios or other mobiles.
Another suggestion is to try replace any css using
:hover with :active.

My navigation div is not reappearing when the screen gets bigger

Apologies for the long winded question but any help would be much appreciated!
I have a navigation div on a website that disappears when the screen gets smaller to be replaced by a menu button, using a media query. The menu button uses JavaScript to show and hide the menu.
This all works apart from one small bug that I can't figure out, it's a bit hard to explain so I'll bullet point it -
1) Open small browser window so button shows.
2) Open and close menu using button.
3) Maximise screen.
4) The button disappears (which it should) but the menu doesn't reappear.
You can see a live example here - http://andrewbruce.me
I'll put relevant code below -
var clicks = 0;
function decide(x) {
if (clicks == 0) {
document.getElementById("nav").style.visibility = "visible";
document.getElementById("nav").style.opacity = "1";
x.classList.toggle("change");
clicks = 1;
}
else if (clicks == 1) {
document.getElementById("nav").style.visibility = "hidden";
document.getElementById("nav").style.opacity = "0";
x.classList.toggle("change");
clicks = 0;
}
}
#nav {
height: 100%;
width: 22%;
text-align: center;
box-shadow: 2px 2px 5px #888888;
visibility: visible;
opacity: 1;
transition: all .3s ease-in-out;
background-color: #1b1d1f;
float: left;
position: fixed;
z-index: 2;}
#media handheld, screen and (max-width: 1000px) {
#nav {width: 40%; visibility: hidden; opacity: 0;}
.menuButton {visibility: visible;}
}
<div class="menuButton" onclick="decide(this);">
<div id = "bar1"></div>
<div id = "bar2"></div>
<div id = "bar3"></div>
</div>

Try this.
I hope helps.
#media (min-width: 1000px){
#nav{
opacity:1!important;
visibility: visible!important;
}
}

You should not change style by this method document.getElementById("nav").style, it will add inline style and override your properties. Instead create a class with those properties, then use scripts to toggle it.
For example:
CSS
.nav-hidden {
visibility: hidden;
opacity: 0;
}
JS
element.classList.add("nav-hidden");
element.classList.remove("nav-hidden");

use below JS
window.addEventListener("resize", menuChange);
function menuChange() {
if (window.innerWidth > 999){
document.getElementById("nav").style.visibility = "visible";
document.getElementById("nav").style.opacity = "1";
x.classList.toggle("change");
}
}

Forcing mobile devices to activate :hover CSS properties on first touch and activate link on second touch

: )
So, I'm trying to solve a hover effect issue. I have tooltips on some of my links. Code looks like this:
<a href="https://wikipedia.org/wiki/Space_Shuttle_Atlantis">
<h6 class="has-tip">Space Shuttle
<p class="tip">The space shuttle was invented by Santa Claus</p>
</h6>
</a>
And the CSS is a bit more involved:
.tip {
display: block;
position: absolute;
bottom: 100%;
left: 0;
width: 100%;
pointer-events: none;
padding: 20px;
margin-bottom: 15px;
color: #fff;
opacity: 0;
background: rgba(255,255,255,.8);
color: coal;
font-family: 'Ubuntu Light';
font-size: 1em;
font-weight: normal;
text-align: left;
text-shadow: none;
border-radius: .2em;
transform: translateY(10px);
transition: all .25s ease-out;
box-shadow: 2px 2px 6px rgba(0, 0, 0, 0.28);
}
.tip::before {
content: " ";
display: block;
position: absolute;
bottom: -20px;
left: 0;
height: 20px;
width: 100%;
}
.tip::after { /* the lil triangle */
content: " ";
position: absolute;
bottom: -10px;
left: 50%;
height: 0;
width: 0;
margin-left: -13px;
border-left: solid transparent 10px;
border-right: solid transparent 10px;
border-top: solid rgba(255,255,255,.8) 10px;
}
.has-tip:hover .tip {
opacity 1;
pointer-events auto;
transform translateY(0px);
}
Now, on desktop this works wonderfully. You hover over the tiny title and you get a pretty looking tooltip, then if you click anywhere on the title or tooltip (unless you decide to put yet another link in the paragraph which works separately and nicely) you activate the link. Yay : )
Now on mobile, the whole thing gets funky. Touching just activates the link. If you have slow internet, or iOS, you might glimpse the tooltip just as the next page loads.
I would like the following behavior:
User taps on tiny title (h6) which has class (has-tip)
If this is the first tap, the tooltip shows, and nothing else happens. 3)
If the tooltip is already showing when they tap (as in a subsequent
tap) then the link is activate and the new page loads.
Any ideas how I might implement this? No jQuery if possible.

One way to do it is to save a reference to the last clicked has-tip link and to apply a class to it which forces the tip to show. When you click on a link and it matches the the last one clicked, you let the event pass.
EDIT: oh, I forgot to mention you might need a classList shim for old IE.
JSFiddle link.
HTML
<a href="http://jsfiddle.net/1tc52muq/5/" class="has-tip">
JSFiddle<span class="tip">Click for some fun recursion</span>
</a><br />
<a href="http://google.com" class="has-tip">
Google<span class="tip">Click to look for answers</span>
</a>
JS
lastTip = null;
if(mobile) {
var withtip = document.querySelectorAll(".has-tip");
for(var i=0; i<withtip.length; ++i) {
withtip[i].addEventListener("click", function(e) {
if(lastTip != e.target) {
e.preventDefault();
if(lastTip) lastTip.classList.remove("force-tip");
lastTip = e.target;
lastTip.classList.add("force-tip");
}
});
}
}
CSS
.has-tip {
position: abolute;
}
.tip {
display: none;
position: relative;
left: 20px;
background: black;
color: white;
}
.has-tip:hover .tip, .force-tip .tip {
display: inline-block;
}

Edit: Just wanted to say that Jacques' approach is similar, but much more elegant.
On touch devices, you'll need to make a click/tap counter:
1) On first tap of any link, store the link and display the hover state.
2) On another tap, check to see if it's the same as the first, and then perform the normal tap action if it is. Otherwise, clear any existing hovers, and set the new tap target as the one to count.
3) Reset / clear any hovers if you tap on non-links.
I've made a rudimentary JSFiddle that console.logs these actions. Since we're not using jQuery, I didn't bother with adding/removing CSS classes on the elements.
Also, sorry about not writing taps instead of clicks.
var clickTarget;
var touchDevice = true;
if(touchDevice) {
var links = document.getElementsByTagName('a');
for(var i=0; i<links.length; i++) {
links[i].onclick = function(event) {
event.stopPropagation();
event.preventDefault(); // this is key to ignore the first tap
checkClick(event);
};
};
document.onclick = function() {
clearClicks();
};
}
var checkClick = function(event) {
if(clickTarget === event.target) {
// since we're prevent default, we need to manually trigger an action here.
console.log("Show click state and also perform normal click action.");
clearClicks();
} else {
console.log("New link clicked / Show hover");
clickTarget = event.target;
}
}
var clearClicks = function() {
console.log("Clearing clicks");
clickTarget = undefined;
};
http://jsfiddle.net/doydLt6v/1/

change :hover to click/tap function on mobile/touch devices not working

So, I'm trying to change the :hover function to a click function using Modernizr's no-touch/touch class for specific elements (captions) on a page. And in theory, this should work, but somehow it's only clickable once on a mobile/touch device, meaning that if I click/tap it again, it won't "un-hover". I can "un-hover" by tapping at another element on the page, but would very much like the caption to disappear when <figure> clicked/tapped again.
If I change the js so that it's the no-touch devices having to click, it works fine. What am I missing here?
Fiddle: https://fiddle.jshell.net/bh3aLkcL/3/
I'm afraid my js skills are quite poor to say the least (read: non-existing), and I've been using a snippet from another post: Change hover interaction to click for touch screen devices
The rest works, so it's just that one thing. Any help is greatly appreciated!
Javascript:
// For hovering becoming click via Modernizr
//$('body').hasClass('no-touch') ? event = 'mouseenter mouseleave' : event = 'click';
!$('body').hasClass('no-touch') ? event = 'mouseenter mouseleave' : event = 'click';
$('.design-section figure').on(event, function () {
$(this).toggleClass('open');
});
HTML:
<section id="work" class="content-section text-left" data-offset="100px">
<div class="design-section">
<div class="container">
<div class="col-lg-8 col-lg-offset-2">
<img src="http://cutepuppyclub.com/wp-content/uploads/2015/05/White-Cute-Puppy-.jpg" width="100%" class="img-responsive" alt="Playing the dilemma game">
<figure>
<figcaption>
<p>test text</p>
</figcaption>
</figure>
</div>
</div>
</div>
</section>
CSS:
figure {
padding: 0;
margin-top: 0;
position: relative;
display: block;
overflow: hidden;
}
figcaption {
position: absolute;
background: rgba(0,0,0,.3);
color: #fff;
}
figure.open figcaption {
-ms-filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=100);
filter: alpha(opacity=100);
opacity: 1;
}
.design-section figcaption {
opacity: 0;
bottom: -30%;
left: 0;
-webkit-transition: all 0.6s ease;
-moz-transition: all 0.6s ease;
-o-transition: all 0.6s ease;
padding: 0;
width:100%;
display:block;
}
.design-section figure {
height:120px;
margin-top:-120px;
z-index:1;
}
.design-section img {
padding-top:0;
margin-top:14px;
z-index:0;
}
.design-section figcaption p {
margin:0;
padding: 1.5% 2.5%;
font-size:15px;
}
.design-section figure.open figcaption{
bottom: 0;
}
P.S. I'm using Bootstrap, but that shouldn't have anything to say in this matter.

You don't need to use Modernizr for checking touch events, you could do it this way:
var event = ('ontouchstart' in window) ? 'click' : 'mouseenter mouseleave';
$('.design-section figure').on(event, function () {
$(this).toggleClass('open');
});
Also, your using of Conditional (ternary) Operator is wrong, I fixed it. Read about right syntax.

you can specify multiple events as a parameter so just include the touchstart to add an action when a user clicks on mobile.
$('.design-section figure').on('mouseover mouseout touchstart', function () {
$(this).toggleClass('open');
});

toggle on hover and click not working properly

I've created this little toggle, since i"m starting with javascript, but it's not working as I would like to. The brown box should appear and disappear both on hover and click (for ipad mostly).
Right now it's fine for hover, but not for clicking on ipad, it just appears once, and thats it.
I think it's also getting confused with my sharing icons.
Any help is appreciated.
jsfiddle
function toggleDisplay (toBlock, toNone) {
document.getElementById(toBlock).style.display = 'block';
document.getElementById(toNone).style.display = 'none';
}
#toggle_hero
{
float:left;
}
.leftHalf
{
display: block;
height: 100%;
width: 50%;
float: left;
position: absolute;
z-index: 2;
}
.leftHalf div
{
display:none;
}
.leftHalf:hover
{
}
.leftHalf:hover div
{
display:block;
width: 100%;
height: 23%;
overflow: auto;
margin: auto;
position: absolute;
left: 0;
bottom: 70px;
right: 0;
background: white;
color: #fff;
background-color:rgba(207,167,80,0.7);
padding:10px;
font-size: 0.8em;
font-weight: 200;
}
.leftHalf:hover div h3
{
font-weight: 500;
float:left;
}
.leftHalf:hover div span{
float:right;
text-align: center;
padding-bottom:5px;
color:black;
}
hover (on a pc) or click me (on ipad)
<div id="toggle_hero" onclick="toggleDisplay('comment', 'toggle_hero')">
<div class="leftHalf clearfix" id="comment">
<div>
<span>
<a target="_blank" class="icon-facebook fa fa-facebook" href="https://www.facebook.com/sharer/sharer.php?u=http://google.com" onclick="window.open(this.href, 'facebook-share','width=580,height=296');return false;">facebook </a>
<a target="_blank" href="http://twitter.com/share?url=http://google.com" class="fa fa-twitter"> twitter</a>
</span>
<h3>this text should appear both on hover and click (for ipad)</h3>
</div>
</div>
</div>

You could just create an event listener that captures the current toggled state in a var.
var toggle = false;
var myDiv = document.getElementById('myDiv');
myDiv.addEventListener('click', function() {
if (toggle === false) {
this.getElementsByTagName('p')[0].style.display = 'none';
toggle = true;
} else {
this.getElementsByTagName('p')[0].style.display = 'initial';
toggle = false;
}
});
http://jsfiddle.net/scott88/bLkdt6mc/
You can add another listener for the 'mouseover'.

Your HTML structure is a bit weird. The text that you want to hover/click is actually outside of the target area for your click event. It happens to work for me locally because of the absolute positioning, but I wouldn't be surprised if the iPad browser behaves differently.
I would suggest defining a clear target for what is to be clicked/hovered, apply a class on click/hover, and handle the rest in CSS. I put together a sample of what I envision. You can remove the mouseenter and mouseleave events to simulate on a computer how it works with the touch events. I'm not sure exactly how you want it to behave, but hopefully this is enough to get you started.
function setHover(isHover) {
var element = document.getElementById("toggle_hero");
if (isHover)
element.className = "hovered";
else
element.className = "";
}
function toggleHover() {
var element = document.getElementById("toggle_hero");
setHover(element.className === "");
}
#toggle_hero {
float:left;
}
#comment {
display:none;
width: 100%;
height: 23%;
overflow: auto;
margin: auto;
position: absolute;
left: 0;
right: 0;
background: white;
color: #fff;
background-color:rgba(207,167,80,0.7);
padding:10px;
font-size: 0.8em;
font-weight: 200;
}
.hovered #comment {
display: block;
}
<div id="toggle_hero" onclick="toggleHover()" onmouseenter="setHover(true);" onmouseleave="setHover(false);">
hover (on a pc) or click me (on ipad)
<div id="comment">
<div>
<span>
<a target="_blank" class="icon-facebook fa fa-facebook" href="https://www.facebook.com/sharer/sharer.php?u=http://google.com" onclick="window.open(this.href, 'facebook-share','width=580,height=296');return false;">facebook </a>
<a target="_blank" href="http://twitter.com/share?url=http://google.com" class="fa fa-twitter"> twitter</a>
</span>
<h3>this text should appear both on hover and click (for ipad)</h3>
</div>
</div>
</div>