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JQuery animate scrollTop doesnt work in one page

I cant solve why animate doesnt work only on one page.
Here is Link: https://tachomaster.pl
For test I add little gray sqaure on the left top corner, if you click this, script should scroll you a little down. As you can see it doesnt work only on main page, on any other it works.
Here is testing script:
$(document).on('click', '.test', function(event){
event.preventDefault();
$('body').animate({
scrollTop: 500
}, 800);
});

you need to hide overflow for all the containers under your body tag

I fix that by changing from
$('body').animate({
scrollTop: 500
}, 800);
to
$('html, body').animate({
scrollTop: 500
}, 800);
I completly dont know why it works that way and didnt work first way ONLY on main page.

Javascript Animate ScrollTop Jumps to Top of Window, Then Bottom

I've got a WordPress menu item with Javascript successfully attached, and I'm trying to make it scroll to the bottom of the page when clicked on. The scrolling itself worked fine, but I found that the page would jump up to the top for a fraction of a second before scrolling down to the bottom. That code looked like this:
$("#menu-item-135").click(function() {
$('html, body').animate({ scrollTop: $(document).height() - $(window).height()}, 500);
});
I googled around for a solution, and ended up with this
$("#menu-item-135").click(function() {
$('html, body').animate({ scrollTop: $(document).height() - $(window).height()}, 500);
return false;
});
All I did was add 'return false;'. That solved the jumping to the top problem, but now the page jumps to the bottom before scrolling instead! Does anyone have any other ideas for what I might try?

window.scrollTo(0, 0);
you need to try this.

how to attach scroll event to window after scroll animation

I'm trying to display a div after scroll animation has finished and hide it when I scroll up/down the page. This is my attempt:
$('#cta').on('click', function(e) {
e.preventDefault();
$('#layer, #servicesContent').addClass('active');
var position = parseInt($('#services').offset().top);
$('html, body').animate({
scrollTop: position - 100
}, 'slow', function() {
$(window).bind('scroll', function() {
$('#layer, #servicesContent').removeClass('active');
});
});
});
it doesn't work. the active class is removed after animation has finished and not with scroll movement.
Any idea?
Thanks in advance

Not exactly sure why, but apparently it takes the window somewhere around 20 milliseconds to exit the scroll state, at least on Chrome, on Windows. Or it might be a jQuery trick to fire the animation function 20ms sooner, so it feels more natural. (Human eye and mind make connections that take tiny amounts of time and maybe they took it into account).
Anyway, in order to make sure you bind after the scroll has ended, give it a full 100ms to finish and bind afterwards:
$('#cta').on('click', function(e) {
e.preventDefault();
$('#layer, #servicesContent').addClass('active');
var position = 120;
$('html, body').animate({
scrollTop: position - 100
}, 'slow', function() {
setTimeout(function(){
$(window).bind('scroll', function() {
$('#layer, #servicesContent').removeClass('active');
});
},100)
});
});
working fiddle.
Please note I had hard-coded a value to position, as #services is not defined in my example.
Also please note that hiding events on scroll is a really bad idea in terms of usability. Users might want to scroll so they view the div better or read it in full, but they will end up hiding it, which would be annoying. I would at least check the scroll event for a minimum velocity or distance in order to hide an element from the screen.

Jquery scroll until element reaches top

I have arrows in the center of my web pages at the end of sections and I was these to allow users to scroll to the next section on click. I have the following code where the first click works but subsequent clicks do not scroll even though the function is being called each time.
$('.scroll').on('click', function(event) {
alert('scroll');
$('html, body').animate({
scrollTop: $(".scroll").offset().top
}, 1000);
});
Can anyone assist? https://jsfiddle.net/avL459sm/2/

You should use current .scroll element you clicked on.
Look at this fiddle: https://jsfiddle.net/avL459sm/3/

Automatic scroll to top on „next page"

Example URL
Here's my issue: When I resize the browser (approx. 320 px width), scroll down and click on the icon (green arrow) „next“ the scroll bar stays at the bottom of the page. What I want to achieve is something like
$(document).ready(function () {
$('html, body').animate({ scrollTop: 0 }, 'slow');
});
so the next page will autoscroll to top, but I've tried with no success. Is there any solution?
Thank you!

I'd add the animation to your (I guess) ajax success function.
success:function(e){
// load the new contents
setTimeout(function(){
$('html, body').animate({ scrollTop: 0 }, 'slow');
},50);
}
If it's not ajax you are using, add it to the button click event handler.

Try this code, I tested it on your site it's working there:
$('button[id^="question"]').click(function(){
$('#header-wrapper').animate({ scrollTop: 0 }, 'slow');
});
Scroll bar is on #header-wrapper element and not body. scrolling body wont do anything since it's already at 0 scroll height.