Right now I have it that if a user scrolls past the bottom of the side bar, then the sidebar turns to fixed and stays on the users page while they read the rest of the main content.
But now my fixed div is falling out into the footer. So, how can I stop it from falling out of the parent div and into the footer?
Here's a fiddle of what's going on: http://jsfiddle.net/95W8w/
All the code is in jsFiddle, but since SO requires I put code here if I have a jsFiddle include.
JavaScript:
$(document).ready(function() {
// Cache selectors for faster performance.
var $window = $(window),
$sidebar = $('#anchor'),
$sidebarAnchor = $('#right');
// Run this on scroll events.
$window.scroll(function() {
var window_top = $window.scrollTop();
var div_top = $sidebarAnchor.offset().top;
if (window_top > div_top) {
// Make the div sticky.
$sidebar.addClass('stick');
$sidebarAnchor.height($sidebar.height());
}
else {
// Unstick the div.
$sidebar.removeClass('stick');
$sidebarAnchor.height(0);
}
});
});
Change bottom to top in your .stick class definition to make the sidebar stick to the top instead of bottom.
.stick {position: fixed; top:0px;}
Related
it isn't a duplicate as I've read the others question but everyone assume that the scroll is vertical, while i need this for horizontal scroll.
What i'm trying to do is to scroll a div, placed somewhere in a page, when it reach the center of the screen or it is almost visible, then when it end its scroll i need to continue the page scrolll.
Actually i have a "slider" like this: JSFIDDLE
Actually, I can get an advise when the element is visible on the page after scrolling, but I don't know how to disable vertical scroll, scroll my div, and then scroll page again. The important thing is that the div scroll how much i continue the scrolling (intended with mouse, keyboard and maybe touch, it will be awesome)
function testInView($el){
var wTop = $(window).scrollTop();
var wBot = wTop + $(window).height();
var eTop = $el.offset().top;
var eBot = eTop + $el.height()+50;
return ((eBot <= wBot) && (eTop >= wTop));
}
function setInView(){
$(".slider-wrapper").each(function(){
var $zis = $(this);
$zis.removeClass("inview");
if(testInView($zis)){
alert("eccolo");
}
});
}
$(document).scroll(function(){
setInView();
});
$(document).resize(function(){
setInView();
});
$(document).ready(function(){
setInView();
});
If you want to disable vertical scrolling then just set overflow-y: hidden on body element
body {
overflow-y: hidden;
}
I'm creating an onepager and need my click-to-scroll script to keep a distance from the anchor section and the top of the page in exactly the size of my fixed navigation bar, to have a clean connect when a link is clicked.
I used already a second anchor with a code which looked like this:
.anchor-1 {
display: block;
position: absolute;
top: -77px;
visibility: hidden;
}
But if I use it, my script will not work as it should.
This is my click-to-scroll script with the 'nav-height' included on the sections. Links are active on the perfect position when I'm scolling by myself, but on clicking it's not moving to the perfect position.
var sections = $('section')
, nav = $('nav')
, nav_height = nav.outerHeight();
$(window).on('scroll', function () {
var cur_pos = $(this).scrollTop();
sections.each(function() {
var top = $(this).offset().top - nav_height,
bottom = top + $(this).outerHeight();
if (cur_pos >= top && cur_pos <= bottom) {
nav.find('a').removeClass('active');
sections.removeClass('active');
$(this).addClass('active');
nav.find('a[href="#'+$(this).attr('id')+'"]').addClass('active');
}
});
});
I need to add a nav_height to the scroll position instead of having sections scrolled all the way to the top, to have a perfect distance from the top.
I created an additional menu bar (.secondnav) that I want to place right below the original header (#headAnnouncementWrapper) in a website. The problem is, when scrolling, the header's height changes when going from relative position to fixed at the top, and also when on mobile.
I've been trying with this:
var scrolled = 78;
var headHeight = $('#headerAnnouncementWrapper').height();
$(window).scroll(function() {
if ($(window).scrollTop() > scrolled) {
$('.secondnav').css('position', 'fixed');
$('.secondnav').css('top', headHeight);
} else {
$('.secondnav').css('position', 'relative'),
$('.secondnav').css('top', headHeight);
}
});
But I don't know how I should be calculating the headHeight variable so it changes when the height changes, and how to use that result as the top value for the .secondnav's css.
Check the height of the main header inside the scroll event. Each time the scroll event triggers, it will recheck the height. Then, the next line will adjust the top margin of the lower header to match the height of the upper header. Top-margin here replaces your position method.
var scrolled = 78;
$(window).scroll(function() {
var headHeight = $('#headerAnnouncementWrapper').height();
$('.secondnav').css('marginTop', headHeight);
if ($(window).scrollTop() > scrolled) {
$('.secondnav').css('position', 'fixed');
} else {
$('.secondnav').css('position', 'relative'),
}
});
This script makes it so when you scroll down in a browser the navigation bar disappears/hides behind the header. I was wondering if it was possible if instead it hid as soon as you scrolled down, hiding it after a user scrolls down a certain number of pixels (say 50px) to avoid touchy nav hiding on slightest scroll.
Thanks in advance for any direction.
// Nav scroll test
var prev = 0;
var $window = $(window);
var nav = $('#belowhead');
$window.on('scroll', function(){
var scrollTop = $window.scrollTop();
nav.toggleClass('hidden', scrollTop > prev);
prev = scrollTop;
});
You can put this inside your "window.on('scroll')" function:
if(scrollTop > 50) {
nav.addClass('hidden');
} else {
nav.removeClass('hidden');
}
2019 Update / Adjustment
The following could be useful for anyone else wishing to develop a header that disappears when you scroll down. I just finished making the following for a website I'm creating that required the top header to disappear when the user started scrolling, but then reappear when they start scrolling up; continuously applying this logic if you were to constantly keep scrolling up and down on the website.
For starters, a class is added to my header tag called nav-scrolled when the user scrolls past a certain point - 50px in this case. This new class can then be styled to change the background-color, add a box-shadow etc...
$(function() {
var header = $(".nav-container");
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 50) {
header.addClass("nav-scrolled");
} else {
header.removeClass("nav-scrolled");
}
})
});
However, this only solved the problem of not being able to edit the headers styles if the user is scrolling from the top of the page - not anywhere on the site - the following fixes this.
var userScroll;
var scrollTop = 0;
var delta = 5;
var navHeight = $('header').outerHeight();
$(window).scroll(function(event){
userScroll = true;
});
setInterval(function() {
if (userScroll) {
hasScrolled();
userScroll = false;
}
}, 250);
The next step for me was to sequentially add and remove classes show-nav and hide-nav that had been styled to display and hide the navigation menu. The following checks whether the user has scrolled (up or down) to a value higher than my delta variable. If the user is beginning to scroll up on the website, the class show-nav is added and the header transitions in from the top of the page. If the user is scrolling down the page the class hide-nav is added, and the header is hidden.
function hasScrolled() {
var st = $(this).scrollTop();
// Ensures a higher scroll than $delta
if(Math.abs(scrollTop - st) <= delta)
return;
// If they scrolled down and are past the navbar, add class .nav-up.
// This is necessary so you never see what is "behind" the navbar.
if (st > scrollTop && st > navHeight){
// Scroll Down
$('header').removeClass('show-nav').addClass('hide-nav');
$('.nav-toggle').removeClass('open');
$('.menu-left').removeClass('collapse');
} else {
// Scroll Up
if(st + $(window).height() < $(document).height()) {
$('header').removeClass('hide-nav').addClass('show-nav');
}
}
scrollTop = st;
}
I am looking to create a simple parallax split screen site that allows me to once a new screen is loaded alternate the scrolling. For example, If I scroll down and the content on the left and right appear I want to then lock the right side and have scrolling only happen on the left until that content is finished.
So it should start like this:
http://alvarotrigo.com/blog/multiscroll-js-jquery-plugin-to-create-multi-scrolling-sites-with-two-vertical-layouts/
but once the section loads in I need just the left scrollable like this:
http://www.themealings.com.au/leesa/portfolio/nick-jr-parents-blog/
Once the left side content is complete I want to present a new section. Any ideas on how this can happen? What is the best JS library to achieve this?
There are several plug-ins that can accomplish this quite easily.
Give this a shot -----> http://viget.com/inspire/jquery-stick-em
Demo here: -----> http://davist11.github.io/jQuery-Stickem/
I am currently using this hard code to accomplish something similar, so this might be of use as well:
var $window = $(window),
$mainMenuBar = $('#fixed-div'), //This div will scroll until top
$menuBarOffset = $mainMenuBar.offset().top,
window_top = 0,
footer_offset = $("#end-div").offset().top, //this div tells #fixed-div when to start scrolling
content = $("#unaffected-div"), //This div scrolls like normal
panel_height = $mainMenuBar.outerHeight()+'px';
$window.scroll(function() {
window_top = $window.scrollTop();
if (window_top >= $menuBarOffset) {
if (window_top >= footer_offset) {
$mainMenuBar.removeClass('stick');
content.css('margin-top', 0);
} else {
$mainMenuBar.addClass('stick');
content.css('margin-top', panel_height);
}
}
else {
$mainMenuBar.removeClass('stick');
content.css('margin-top', 0);
}
});
You will also need to add this element to your .css file
.stick {
position: fixed;
top: 0;
}