add animation to an tab navigation - javascript

I was wondering what could be the easiest way to add animation to some tab navigation.
I'm developing a small documentation website, Documentation, and as you can see I have that small arrow that adds up to the tab when navigation.
Well, what I was thinking is what if I can do it like this : Sample ; I tried something, I added a span via JS and then on click event ( applied to the li elements ) trigger the arrow animation. The thing is that doing that I stopped the script which is responsible for making the tabs work as they do stop.
So is there another way to achieve something like that ? And what would be the logic ?

Simplest would be to add a narrow absolute position div inside st_slide_container and position to the right. Inside that new element add another element that is just large enough for your arrow icon and is position absolute.
Either use callback of tabs change( depends on what is available in plugin API) or add another click handler to a.st_tab.
In this event handler you can get the index of current tab and apply animation of position top to the small arrow element
EDIT: Example of click handler to get index which would be multiplier for the top animation
$('a.st_tab').click(function(){
alert($(this).parent().index())
})

Related

React - Javascript horizontal menu scrolling as you scroll

I'm trying to make a horizontal menu that is moving to the left-right (kind of a spyscroll) as you move through the app.
Currently I have only underline and text colour change because I didn't know how to make it "scroll" as you move down the app... Does anyone have an idea how to do that? Thank you in advance.
Attached image: Menu and App image
Refer this video
set active class name for each section in the header and get the scroll value from the event listener and use conditions to apply the active class name
I would say the most common way of changing an element based on scrolling is to use Intersection observer. Using intersection observer you can specify what should happen when a certain element is not visible/visible/visible partialy.
The second method I can think of is to manually calculate the position of window:
window.pageYOffset
And set a condition like so:
if(window.pageYOffset > XX){}
Add a listener to element which has the vertical scroll.
verticalScrollEl.addEventListener("scroll", (e) => {
horizontalScrollEl.scrollLeft = e.target.scrollLeft;
});

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..

changing top position for all elements of a class using jquery

I have a multiple div's which have a onmouseover action which generates the top for them .It is OOTB js file so I cannot change it .Is there a way that I can change the top values of the div elements with the same class to another value after the onmouseover event has fired .SO lets say this event creates the pop up with the top 123 and I want the top to be 23 .Is it possible .
Thanks
If you are talking about using jQuery UI to create dialogs on every mouseover event and you are trying to change the dialogs position by changing it's top property then you will need to use the dialogs position option like this:
$("#popup").mouseover(function(){
$(this).dialog({
position: [123,23]
});
});
This will create a dialog with a left property of 123px and top of 23px. Alternatively, if you insist on using the css method then you could do it to the div which is wrapped around #popup when the dialog is created:
$(".ui-dialog").css("top", "23px");
For more info on the dialog position option: http://api.jqueryui.com/dialog/#option-position
NOTE: This question is very ambiguous and since I can't comment yet, I have had to do a lot of guessing.. I was killing time :)

if cursor inside div then display block jquery

Here is a jsfiddle of the problem:
http://jsfiddle.net/MEJgb/
I want it so when you hover over anywhere in the footer the toggledown will become active and will remain active until you move the mouse from the footer.
Your problem is the following line:
jQuery('html,body').animate({
scrollTop: jQuery("#footer_copy_right").offset().top
}, 'slow');
This causes the whole page to move adn thus the item you were hovering over is no longer being hovered over so it triggers your event again and hides your text. When I was testing this was causing the hover content to move back under my mouse and thus trigger again...
I would personally not use hover in this situation and let the user click to expand and then click again to collapse.
If you want to keep using the hover option then you need to decide what the event to trigger the collapse should be. Clearly the current choice (mouse no longer over the arrow) is insufficient.
Often what I will do is attach the hover to a block containing the visible triggering block as well as the contents that are going to be displayed. This way your content won't collapse until you have moved off the newly displayed content.
http://jsfiddle.net/AjHwM/ is an example of such a thing.
Even if I'm not sure what your actual goal is, maybe the document.elementFromPoint() method is what helps you out here.
It is invoked like
if( document.elementFromPoint( event.pageX, event.pageY ) === $('#footer')[0] ) { }
That code, within your hover aka mouseenter / mouseleave handlers, would compare the node which lays under the current absolute mouse cursor X/Y positions against the #footer node.
Ref.: MDN doc, W3C doc

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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