Develop Reference

Trigger 2 events on href? Scroll to top, then load

I have a question, I would like to trigger a specific event in javascript or jquery on a webpage. The page has an animation effect during page loads (the screen and content splits in two and slides open revealing the next content). This works fine when the content on the page fits and doesn't need to be scrolled. However when content needs to be scrolled, the effect doesn't look as good. Is there anyway to trigger an href to scroll back to the top of the page and THEN load the href link/target? In basic terms something like "on click scroll to top and then load link" Any help would be great! Thanks

One could use jquerys animate to scroll to the top, then if that finished redirect:
$("a").click(function() {
$("html, body").animate({ scrollTop: 0 }, "slow", ()=> location.href = this.href );
return false;
});
try it

Is there anyway to prevent page jumps (from loading images) while scrolling to a div?

I use the following code on page load to smoothly scroll to a div
$(document).ready(function() {
$('html,body').delay(50).animate({scrollTop:jQuery('#3342').position().top-10}, 'slow');
});
It works wonderfully to smoothly scroll the page to a predefined div id (in this case div id=3342, but the actual div ID changes depending on what button the user clicks).
The problem is that if there are any images in the pages above div 3342, then after the scroll finishes, the page jumps and the entire positioning scroll is for nothing, as that content is no longer on screen.
This is on mobile safari btw. I know Google chrome has recently introduced Scroll anchoring, and I believe this is the functionality i'm trying to reproduce somehow.
Just FYI, I have no way of knowing the sizes of images or the ratio of the image sizes ahead of time. They are random images from around the web
Thanks!
EDIT: I don't want to change to window/load event as that means I would have to wait for all the images to load first, which would delay the scroll event massively on some pages
EDIT: The image URLs are all on the source page, no ajax loading of pages after the fact

Repeat until complete:
$(document).ready(function() {
var div = jQuery('#3342');
var complete = false;
function adjust () {
if (!complete) {
$('html,body').delay(50).animate({scrollTop:div.position().top-10}, 'slow', adjust);
} else {
$('html,body').delay(50).animate({scrollTop:div.position().top-10}, 'slow');
}
}
adjust();
$(window).on('load', function () {
complete = true;
});
});

How to jump to certain position of scrolled element without scrolling the main screen?

I have a container (div) on the page. This container has a scrolling (provided by overflow:auto; height:400px).
I need no provide a URL, that will open a page so that the main page will not be scrolled, but the text in the container will be scrolled.
I tried www.mysite.com#position, but by this way the main page is scrolled too (and I need, that users will see the header on the top of the screen, and the "#position" position on the top of the container)

This is possible with javascript. And I will show a jQuery example here.
if (window.location.hash == '#position') {
$('#containerDiv').animate({
scrollTop: $("#actual_position").offset().top
}, 2000);
}
The actual_position should be the place where to scroll to. position should just be in the url and not on the page, to prevent the whole page from scrolling.

May you use the css-properties: position:fixed, top:..., left:... for your element that should stay at a certain place on your side, when an user scrolls.
Furthermore you can put all content that you do not want to be scrolled into a div and define the css-properties.
I hope this helps you a little bit.

Really it's an upgrading of Arjan answer (and now this really works).
As Arjan's suggestion the script will not work every time, but only by providing #scroll in the end of url (www.mysite.com#scroll). This script will scroll the container scroll bar to the #position element, and the all document will stay.
jQuery(window).load(function(){
container_top = jQuery('#container').offset().top;
element_top = jQuery('#position').offset().top;
element_relative_top = element_top -container_top;
if (window.location.hash == '#scroll') {
jQuery('#container').animate({
scrollTop: element_relative_top
}, 2000);
}
})

javascript infinite scrolling forward

I am working on an infinite implementation. At the moment, I am able to scroll down and the code does what it is supposed to do with this check:
if ($(window).scrollTop() > $(document).height() - $(window).height() - 300) {
//do stuff
}
I also need to do stuff when I go forward. The problem I have is that when the page first loads, the scroll bar is at the top of the page, is there an event or a way of knowing the user is scrolling up when the page first loads?
At the moment, the user has to scroll down and then up to trigger the event.

I had the same problem and i used
window.onload = loadSubPage;
Hope it's what you are looking for :)

Weird behavior of JavaScript (With jQuery) 'scrollTop' on Android WebView

I have an HTML file with an element inside it with id="start_section".
I want that when the page loads it will scroll down to this element so i added the following scrip:
jQuery(document).ready(function()
{
// scroll 20px above this div
jQuery('html, body').animate({ scrollTop: (jQuery('#start_section').offset().top)-20 }, 800);
});
Now, it's working just perfect on the first time the page is loaded.
But, As soon as the Activity is recreated for some reason, like orientation change, something weird happens: The page is reloaded, and then instead of scrolling down to the specific element, it is scrolling all the way to the bottom of the page.
I tried to disable the cache but it didn't help.
Any Ideas?

Try to just use "jQuery('body')" instead of "jQuery('html, body')"