Develop Reference

How to execute code after 3rd party slide down animation?

Background:
I am using the materialize JS to create collapsible divs. When a div that has a class of collapsible-header is clicked, a slide down animation occurs on the sibling div that has a class of collapsible-body, showing the contents of the collapsible-body.
What I am trying to accomplish is when a collapsible header is clicked, the browser should scroll to the top of that div so that the contents are in full view of the user. I have used an on click event, which works fine on the first collapsible. But then, if you have an open collapsible and you click on another to open it, it doesn't scroll to the top of the clicked div properly (it will scroll to the middle of the body, or way above the top of the div).
JS Fiddle of on click functionality: https://jsfiddle.net/f83dct8f/4/
I am able to accomplish what I am looking to do by editing the Materialize JS itself. Here is how the line looks before my edit:
object.siblings('.collapsible-body').stop(true, false).slideDown({
duration: 350,
easing: "easeOutQuart",
queue: false,
complete: function() {
$(this).css('height', '');
}
});
I add the following to the complete portion of the above statement to accomplish what I'm looking for:
$('body').animate({scrollTop: $('.collapsible-header.active').offset().top },'slow');
Question: I do not want to edit the Materialize 3rd party code to accomplish what I need, so I need to find a way to implement the body animate code after the slide down is finished, without editing the Materialize animation. I know there has to be a way to do it?
I have tried event queues on the collapsible body, which seemed promising, but my test console print executed during the animation. See below. If someone could point me in the right direction of what else I could try, I would greatly appreciate it.
$('.collapsible-header.active')
.siblings('.collapsible-body').slideDown().queue(function(){
console.log('DONE');
});

You should be able to use the onOpen option when initialising your .collapsible. Pass in a function to execute when the accordion is opened. The function receives the element as a argument.
$(document).ready(function() {
$('.collapsible').collapsible({
onOpen: function(el) {
$('body').animate({scrollTop: el.offset().top },'slow');
}
});
});

I'm having trouble getting .animate() to work

Link: https://jsfiddle.net/nbonne/9hcoy9j8/
I aim is to have the medium blue box and everything in it move up when the search button is pressed.
I know my selector is for "form" and it's trying to change the background, I'm having trouble getting anything to animate.
I think this is the correct way to accomplish it but nothing happens:
$("#search-btn").click(function{
$("controls-main").animate({
background: "red"
}, 500);
})

In the fiddle:
Second click handler was missing parentheses (syntax error in console)
s-form class was missing from your form html code (empty selector)
$('search') is a wrong selector. You probably wanted $('[name=search]');
You are animating background, which jQuery's animate doesn't animate.
Updated working fiddle: https://jsfiddle.net/9hcoy9j8/18/
$(document).ready(function() {
$(".rand-wiki").click(function() {
window.open("https://en.wikipedia.org/wiki/Special:Random");
});
$(".s-form").on('click', function () {
$("[name=search]").animate({
marginTop: '40px'
}, 500);
});
});

jQuery on its own can't animate colors. You need another library like jQuery UI. See this SO answer for more information.

hover behaviour should continue on overlayed element

I have an issue with jQuery's .hover() method. I have a few paragraphs inside a tags which I use as a menubar. What I intend to do is, if I hover one of these menulinks, a new element gets displayed over the menulink which contains links to submenu links. The problem is, that the .hover() stops working immediately.
I did a simple FIDDLE to show my problem.
Any help is much appreciated.
Edit: Worth to say is, that I also want the sublinks to be clicked, so the hover must be still working then. It only stops when I leave the red div.

What about this?
$('p').hover(function() { $('div').fadeIn(); }, function() { });
$('div').hover(function() { }, function() { $('div').fadeOut(); });
Demo fiddle: http://jsfiddle.net/lparcerisa/1urs0wfr/2/

jQuery draggable problem with 'scroll' on object inside overflow:hidden container when using appendTo: 'body'

I have a draggable object, with that can be accepted in several droppables.. I have put all the droppables in a container, and simply want to be able to detect when the draggable is hovering over the container of droppables...
At first, I tried making use of the 'over' and 'out' callbacks for droppables, but it was not working because hovering from one droppable to another (inside the same container) was causing it to think the mouse had left the container...
So my next approach was to in the drag start callback, do an event listener for mouseenter and mouseleave on the container-- and then stop listening on the drag stop callback...
However, this results in total crazy behavior... If you look at my example page:
http://collinatorstudios.com/www/jquery_draggable_test.html
When dragging the box to the red dropzone, you should see "enter" when the mouseenter event fires, and "leave" when mouseleave happens.. However, just dragging the box over the inside of the container causes "leave" to appear a zillion times..... I cannot figure out why this is happening, nor what solution there is to my problem so I can do what I need to. I've been working on this for almost 4 hours now and am losing my mind over what seems like it should be so simple to achieve.
Any help would be greatly appreciated... Thanks.

Try adding a droppable for the container:
$('#drop_zone_container').droppable({
over: function(){ feedback.text('enter')},
out: function(){feedback.text('leave')}
});

You only need to bind to the events once! There is no need to bind and unbind them each time... I separated them out in the code below to make it more clear about binding once.
And as ZDYN said (+1 to him), you need to include a droppable code, but instead of using the container, use the zones inside... here is a demo and the full code below.
var feedback = $('#feedback');
$('.item').draggable({
revert: true,
zIndex: 999,
cursor: 'move'
});
$('.drop_zone').droppable({
drop: function(event, ui) {
ui.draggable.appendTo($(this));
}
}).bind('dropover dropout', function(e) {
var id = this.id;
feedback.text(e.type === 'dropover' ? 'Over: ' + id : 'Out: ' + id);
});

Help needed with showing and hiding a div

I'm having a problem with an image viewer I'm creating. Like the image below, the 'window' is where the image is shown and 'paging' is where the user can change the image. I've used this Jquery script to make the 'paging' fade in whenever the window is hovered over - It's hidden to start with. Although when the user hovers onto 'paging', it flickers. (Like shows then hides, etc.)
I suppose it's because the mouse isn't hovering over the 'window' anymore. Can anyone suggest how I can make 'paging' remain showing? Thanks for the help! :)
$(".window").hover(function() {
$(".paging").fadeIn('fast');
}, function() {
$(".paging").fadeOut('fast');
});

You can use .stop() here and include both in your .hover() selector, like this:
$(".window, .paging").hover(function() {
$(".paging").stop(true, true).fadeIn('fast');
}, function() {
$(".paging").stop(true, true).fadeOut('fast');
});
This way, when you leave to enter the child or back to the parent it stops the fade out and brings it right back, resulting in no visible action to the user.

You could try using mouseover and mouseout instead. I'm not sure that mouseout would react the same way hover does.

In fact, when you pass your mouse over the paging there is a magical thing that happens which is called "event bubbling": the "hover" event is passed to the container which is the parent of the "hovered" object, and so on until the "document" object.
So to solve your problem, you need to stop bubling, you can do it with "return false":
$(".paging").hover(function() {
return false;
}, function() {
return false;
});
(It's possible that in recent version of jquery you can replace the argument function(){return false;} by just false.)