Change jQuery hover() to click() on mobile - javascript

I have a simple jQuery drop-down and it works with no problems. The issue I am having is on my responsive design it still keeps the hover effect which isn't working correctly on mobile. Is there anyway to cancel the hover once the hamburger icon .menu is clicked? The idea is to keep the .subNav hidden on mobile and once the user clicks the .topNav li a the .sabNav slides down. I couldn't attach the responsive design in the fiddle but you can probably get a good idea of what it's doing.
http://jsfiddle.net/9L3cE/1/

This question is bigger than just what you're trying to accomplish. The real problem is determining this: What is mobile? In your case, you're using small screen size as a proxy for touch screen capability.
This might be an ok solution for now, but it's not a great long term solution. What if a tiny netbook comes to your site, and based on the responsive breakpoints you've set, it gets the "mobile" view based on its screen size, but it's a device without any actual touch capability?
Anyway, if you're using screen size as a proxy for touch capability, you can just go into your javacript and set a flag on the event that you want to use based on the window width you've determined as your "mobile" (touch) breakpoint. E.g. for a breakpoint at 600px:
var menuEvent = ($(window).width() < 600) ? 'hover' : 'click';
Then, when you want to bind your UI events, you would use:
$(element).bind(menuEvent, function() { ... });

I recommend that you should determine whether the device has hover or no. If it has hover, then generate your html so the result will be:
<body class="with-hover">
<!-- HTML Structure -->
</body>
If it does not have a hover, you should have:
<body class="without-hover">
<!-- HTML Structure -->
</body>
Now, define your hover event to be applicable specifically for the case when hover if possible:
$("body.width-hover").on("hover", yourSelector, function() {/*Hover code here*/});
Also, define your click event
$("body.without-hover").on("click", yourSelector, function() {/*Click event here*/});

Related

How to do an element that is toggable on small screen sizes but always visible on big

I want to have a menu that is toggable in small screen sizes and always visible on medium sizes upwards.
The behavior should be (basically) exactly like this demo here.
The steps are:
Go to a small screen size (til the body outline is gold)
Check that it's toggable
When the menu is hidden and you get a bigger screen size, the menu should appear
When the menu is not hidden, go to a bigger screen size and it should remain shown
When on a big screen size, and element was hidden, you should see it but when you drag to a smaller size, it should get hidden
When on a big screen size, and element was NOT hidden, you should see it but when you drag to a smaller size, it should get hidden
To achieve this is very easy with:
$(".click").click(function() {
$(".menu").toggleClass("hidden-md-down");
});
My problem now is that I want to animate this show and hide and I can't do it with the class toggle.
So I have to rely on for example slideToggle() and here is where my problem lies, see demo here.
If you now go to a small screen size, hide the menu and make the window size bigger, the menu won't appear because of the hide() function.
I know this could be solve with a $(window).resize but I definitely don't want that solution since it's terrible for performance for such a small feature.
So how can I either have this toggle class with an animation or do it with js without the resize method?
I've put my comment into an answer instead: "For best performance wire your window size check to only the end of the browser resize, not to every stage."
This code works and it only runs .5 sec after the end of the window resize event rather than during (better performance). Run the code full page and squeeze your browser window to see it in action.
Instead of sending the text values #width and #height you can elect to run your menu toggle or deactivate it; I'd do this by removing the js class you're using to activate the menu initially.
And make your menu an unordered list and set it to be inline on desktop and an unbulleted list on mobile using css.
$(window).resize(function() {
if(this.resizeTO) clearTimeout(this.resizeTO);
this.resizeTO = setTimeout(function() {
$(this).trigger('resizeEnd');
}, 500);
});
$(window).bind('resizeEnd', function() {
var widthReport = $("#width").text($(this).width());
var heightReport = $("#height").text($(this).height());
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div id="width"></div>
<div id="height"></div>

How to build design-changing main menu on website?

Please, if somebody know, how to build main menu like on that webpage, can you help me?
I really like their menu, namely the fact that when you are scrolling down - it changes . And when you return to top again, its resets to original design. Thanks a lot.
I know how to create menu, edit it, etc. I do not know on what principle works switching of design.
Here we go:
You should do it with jQuery script like this:
This will change the page color to blue when you scroll more than 210px, and will revert back to red if you go back up:
$(document).ready(function(){
var scroll_pos = 0;
$(document).scroll(function() {
scroll_pos = $(this).scrollTop();
if(scroll_pos > 210) {
$("#header_menu").css('background-color', 'blue');
} else {
$("#header_menu").css('background-color', 'red');
}
});
});
Or you can see there code source, open the web page and click right click mouse choose 'Explore'(Prozkoumat in czech language). Here you can watch how works it, it's easy:)
Hope it helps;)
The basic premise of the navigation you reference in your post is scrollTop() ( https://api.jquery.com/scrollTop/ ). The WordPress theme (Avia) used on your reference site has a jQuery function that does the following:
By default, add a class that applies the transparency effect.
'Listen' to the scroll position of the website and, if it is >50px remove the transparency class (allowing the default stylings to take effect). Re-apply the transparency class as needed.
Other than that it's a bit of CSS transition effects to make the change a bit smoother. This particular website relies on jQuery due to it being a WordPress installation, but you can achieve this same effect using any other JavaScript library (or in pure JS if you are so inclined).

Creating a preview effect for gallery images that closes when clicked outside

I am making a preview box that pops up when you click a gallery image and need to make it disappear when you click outside of it. I found many solutions but none work with my code. I think the problem is I may need a while loop but I tried several conditions and all were infinite.
This is the last solution I tried. The preview works but I can't get it to close when I click out.
DEMO
$('.portPic').click(function() {
if ($(this).attr('data-src2')) {
$('#clickedImg').attr('src', $(this).attr('data-src2'));
} else {
$('#clickedImg').attr('src', $(this).attr('src'));
}
$('#clickedImg').css('visibility', 'visible');
$('#clickedImg').blur(function() {
$('#clickedImg').css('visibility', 'hidden');
});
});
I've done a similar thing with a pop-out menu, where the user clicks "off" the menu and it closes. The same can be applied here.
I used an overlay div which spans the whole screen (with a translucent opacity - maybe 0.6 black or similar; or whatever colour you want) which gives a nice modal effect. Give it an id - let's say modal-overlay.
You can put it static in your page code, and set the display to none and make it the full-size of the page (through a CSS class).
<div id="modal-overlay" class="full-screen-overlay"></div>
Set the z-index of the overlay to higher than the rest of your page, and the z-index of your popup to higher than the overlay. Then when you show your popup, also set the visibility of the modal-overlay to visible, too.
In your script code, put an event handler for when the modal div is clicked:
$('#modal-overlay').click(function() {
$('#clickedImg').hide();
$('#modal-overlay').hide();
})
I would also use the .hide() jQuery method, which is easier than typing out the visibility.
Better still, if you have more than 1 thing going on (which you would with a modal overlay), wrap your "show/hide" of the popup in a hidePopup() or closePopup() method and call it onClick to save re-using code.
For effects when opening the popup/overlay, you can also use jQuery animations like .fadeIn() or .slideDown(). Use fadeOut and slideUp to hide.
These animations also perform the showing/hiding, so you wouldn't need to call .hide() or .show().
Check out this link to jQuery's API documentation for animations. Very useful and a good read.
Hope this helps!
You'll need to create a seperate div that is most likely fixed position that sits just one step lower (z-index) than your popped-up image. Attach a click handler to this div (overlay) and do your showing/hiding functions in there.
You can use modal photo gallery.
http://ashleydw.github.io/lightbox/
You can use this codepen code, too. SO is not letting me post the link here. So serach using thi "Bootstrap Gallery with Modal and Carousel".
Hope this helps..

jQuery UI menubar, position submenu absolute left

I have created a jQuery UI navigation menu, using the menubar widget. It works how I expected except I would like it to behave slightly differently. As you can see here http://jsfiddle.net/hcharge/DebVr/ the submenu expands out and is positioned relative to the link that was clicked.
I would like it to expand out and stick to the left of the navigation bar, no matter which link was clicked, the submenu will always stay the same width. Like this image...
I've tried setting a position relative to the container and absolutely positioning the submenu, however I think that jQuery UI positioning is overriding this. Any advice would be great, cheers.
Edit: this needs to be done with JS as it has to be clicks and not hover actions that trigger the dropdowns
Why don't you do it all only with CSS?
See http://jsfiddle.net/DebVr/8/
Note: the background is blue in order to see the white borders.
Edit:
If you want some functionality, you can add it later, but I think that the basis should be with CSS.
See my code with some functionality here: http://jsfiddle.net/DebVr/11/
var links=$('#bar1>li>a').each(function(index,obj) {
obj.tabindex=index+1;
});
$('#bar1>li>a').focus(
function(){$(this).siblings('ul').show();}
);
$('#bar1>li>a').blur(
function(){$('#bar1>li>ul').hide();}
);
Edit 2:
If you want to hide again the submenu when clicked, use the following code:
var links=$('#bar1>li>a').each(function(index,obj) {
obj.tabIndex=index+1;
});
$('#bar1>li>a').focus(function(){
$(this).siblings('ul').addClass('show');
});
$('#bar1>li>a').mousedown(function(){
$(this).siblings('ul').toggleClass('show');
});
$('#bar1>li>a').blur(function(){
$(this).siblings('ul').removeClass('show');
});
And CSS:
#bar1>li>ul.show{
display:block;
}
See it here: http://jsfiddle.net/DebVr/16/
Edit 3:
In the code above, I replaced obj.tabindex with obj.tabIndex, and updated the jsfiddle.
The problem is that if you click on the submenu, the anchor loses focus and then the submenu dissapears. On Chrome it can be easily fixed setting the focus event to #bar1>li instead of #bar1>li>a, but then the event doesn't work on firefox... I'm working on a solution, but meanwhile you can use http://jsfiddle.net/DebVr/16/.
Edit 4:
Finally, the fixed code: http://jsfiddle.net/DebVr/18/
It works on Chrome, Firefox and IE.

Trigger an event when user clicks on a divs horizontal scrollbar arrow

I have a div with a horizontal scroll.
Is there any way I can detect the click on the horizontal scrolls
arrow using jQuery ?
Note:
Actually I want the scroll to move a fixed no of pixels to the right when the user clicks the right scroll arrow and vice versa.
The event should not be triggered on scroll. It should be only triggered if user explicitly clicks the scrolls arrow.
There are multiple divs having scrollbars, having same class and no ids.
Would prefer to not use any plugins
Here is a demo for what you want
http://jsbin.com/opufow/4/edit
I hope this will help you?
you can use .scroll function of jquery.
Edit 2: Another suggestion is to do something like this depending on your implementation of scrolling areas (see working jsfiddle):
function CustomScrollArrow(elementToScroll) {
var $el = $(elementToScroll);
return $('<a>Click me to scroll</a>').css(/*...*/).click(function(){
$el.scrollLeft($el.scrollLeft()+10);
});
}
$('.ScrollAreaClass').each(function(){
// You could choose to append to your scrolling
// areas or their wrapper classes or whatever...
$('body').append(new CustomScrollArrow(this));
});​
Afterwards it's just a matter of styling your handmade arrows.
Edit 1: I've seen you updated your question, so here's an updated answer with an alternative solution.
You can try to circumvent the problem by using a customized scrollbars implementation, for example jScrollPane by Kelvin Luck or any other, whatever. If the solution offers click events on arrows - then you're set. Otherwise just do a bit of tinkering...
I maintain, however, my point of view that unless you are looking to perform an action before the browser executes the arrow click, I would recommend adding an event handler to the actual result of that click, i.e. the scroll.
Doing this will help to avoid inconsistencies across various implementations of scrolling in browsers; will keep working if scrolling is performed in another manner (i.e. swipe gesture); will still work if there's some javascript code that replaces the default browser implementation of scrollbars.
jQuery offers the .scroll handler to capture scrolling and .scrollLeft to determine the resulting position of the horizontally scrolled content.
Try a working jsfiddle or see the code below:
// Cache the initial scroll position:
var initialLeftScroll = $('#wrapper').scrollLeft();
// Bind event:
$('#wrapper').scroll(function (ev) {
// Get new horizontal scroll offset:
var currentLeftScroll = $('#wrapper').scrollLeft();
// Determine the difference
// (did the user scroll horizontally or just vertically?):
var leftScrollDifference = currentLeftScroll - initialLeftScroll;
// Now we can check
if (leftScrollDifference) {
/* Do something here */
}
// Reset the cache:
initialLeftScroll = currentLeftScroll;
});

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