If you look at the website:
http://eyeheartworld.org/pages/the-cause
and scroll down, there's an implementation of a concept I found on codepen (when you scroll down, the navigation bar scrolls and is fixed)
var header = $("#guide-template");
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= window.innerHeight) {
header.addClass("fixed");
} else {
header.removeClass("fixed");
}
});
(http://codepen.io/simpleminded/pen/noaJj) and I just wanted a quick run through at the least of how the PICTURES on the top page are working. They scroll to the top and then stay fixed while other pictures scroll over them.
it's a simple case of adding position: fixed; to a block at the top of your HTML content. Here's a very basic example:
body{
margin: 0;
padding: 0;
}
#top-bar{
height: 40px;
width: 100%;
background-color: #000000;
color: #FFFFFF;
position: fixed;
}
#content{
height: 3000px;
padding-top: 40px;
}
<!DOCTYPE HTML>
<html>
<head></head>
<body>
<div id="top-bar"></div>
<div id="content">
AAA<br />
BBB<br />
CCC<br />
DDD<br />
EEE<br />
FFF<br />
XXX<br />
YYY<br />
</div>
</body>
</html>
It basically looks for the height of your screen with: window.innerHeight and adds a class when the amount scrolled is bigger than the height of your screen.
This is the same height as the #introscreen, which is set to 100vh with css. 100vh is basically the same as 100% (More on VH here).
So the 'navbar' is always just below the users' screen, and once you scroll this exact amount, it adds the class 'fixed' which fixes the navbar to the screen. If you scroll back the class gets removed again.
Related
I am trying to make my footer "sticky" but the heights vary so can't use most of the methods I've found or flexbox. Is there any way to check with javascript how much space is under a div so I can add that much margin?
The html looks like this:
<container>
<header></header>
<body><sometimes sub content></sub content></body>
<footer></footer>
</container>
Also tried putting the footer outside of the container, saw that in some solutions, but again they all require a fixed height.
You can check if $(document).height() > $(window).height(). That will tell you if the height of the content is longer than the viewport. If so, leave the footer where it is. If the doc height is <= the viewport height, add make the footer sticky. Like so:
To see the difference between sticky and non-sticky, run the snippet below to have the footer at the bottom of the page. To view it where the footer is sticky, run the snippet in full screen mode (on the top right corner of the snippet output). You can also just run it in full screen mode and then shrink your browser size down - it recalculates on window resize.
$(window).on("load resize", function() {
// if content height <= viewport height, make footer sticky
// else leave footer at the bottom of the content.
$(".footer").toggleClass("sticky", $(document).height() <= $(window).height());
});
.footer {
width: 100%;
background-color: #555588;
color: white;
}
.sticky {
position: fixed;
bottom: 0;
left: 0;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<pre style="font-size: 16px;">
content
content
content
content
content
content
content
content
content
content
content
content
content
content
content
content
content
content
content
content
content
</pre>
<div class="footer">foo foo foo <br/>foo<br/>foo<br/></div>
You can set the main minimum height to 100vh, and position the footer at the bottom absolutely. The main should have bottom padding to at least the height of the footer, and box-sizing: border-box to main the 100vh height.
However the example to see the sticky footer in action.
body {
margin: 0;
}
main {
position: relative;
padding-bottom: 60px;
min-height: 100vh;
box-sizing: border-box;
}
.hidden {
background: blue;
height: 100vh;
}
main:not(:hover) > .hidden {
display: none;
}
footer {
position: absolute;
width: 100%;
height: 50px;
bottom: 0;
background: red;
}
<main>
<article>Short Article</article>
<article class="hidden">
long article
</article>
<footer>
I'm the footer
</footer>
</main>
I have a header, in which i put my h1 and h2 headings at top. The problem is that header scrolls along the scroll bar which is of course normal but i want to fixed it at some point when all the headings on header scroll away. At this point I want header to stop and stays fixed.
I already tried fixed position but of course it fixed heading as well which exactly I don't want.
I also tried this JavaScript but no luck.
JavaScript
$(window).scroll(function() {
var _height = 120 - (120 * $(this).scrollTop() / $('body').height());
if (_height >= 80) {
$('.header_container').height(_height);
}
});
and here qre my HTML and CSS codes respectively.
HTML
<div class="header_container" id="header_container">
<div id="header_titles">
<h1 class="homepage-heading">Browse</h1>
<h2 class="homepage-heading-subtle">GENRES & MOODS</h2>
</div>
</div>
CSS
#header_container {
background-color: black;
width: 100%;
height: 120px;
top: 0;
left: 0;
right: 0;
}
#header_titles {
position: absolute;
width: 100%;
font-size: 35px;
text-align: center;
padding-top: 10px;
}
So, let me see if I get this...you want your header to be scrolled normally with the page until a certain point where it becomes fixed?
EDIT
Ok, well, you could determine the element on the page that you want the position to be triggered at. Like, the top of a certain paragraph, and use that position in your condition.
var condition = $(element).offset().top;
if($(window).scrollTop > condition) { //add a fixedClassName } else { remove the fixedClassName }
and have header.fixedClassName have those proprieties ( with position fix, top 0 and width: 100% to your header etc). Be sure to add and remove a class on the body that gives it padding-top with the height of your displaced header.
Used some similar effect here http://goodmen.se/ after a point the logo shows up in the header, then there's a background change. You do something similar with your position.
EDIT 2
Here's an example fiddle http://jsfiddle.net/Corsico/vpskd8hd/
So you want a sticky header?
In your javascript create a code:
var $header_container = $('#header_container');
var header_height = $header_container.outerHeight(true);
if($(window).scrollTop() < header_height){
$header_container.removeClass('sticky');
} else{
$header_container.addClass('sticky');
}
$(window).on('scroll', function(){
if($(window).scrollTop()< header_height){
$header_container.removeClass('sticky');
} else{
$header_container.addClass('sticky');
}
});
This will add a sticky class to your header, and then you can set the header to be fixed:
.sticky{
position:fixed;
top:0;
left:0;
width:100%;
display:block;
}
This should do it. When you scroll pass the height of the header, you'll get the 'sticky' class, if not, you'll remove the sticky class...
Im trying to add a footer at the bottom of this content that doesn't overlay the content but moves it up.
The only way I can see it working would be something like, when browser is at the bottom remove 'fixed' class on the left red '#work'.
js fiddle DEMO
Updated js fiddle DEMO
HTML
<div id="header-block">
Header-block, this sits here in the background
</div>
<div id="content">
<div id="work">
This content should be fixed when at the top
</div>
<div id="description">
This content should scroll -
</div>
</div><!-- end content -->
<div id="footer">
This should appear at the bottom
</div>
CSS
body {
margin: 0px;
padding: 0px;
}
#header-block {
background: green;
width: 100%;
position: fixed;
z-index: 1;
height: 300px;
top: 0;
}
#content {
margin-top: 300px;
width: 100%;
position: relative;
z-index: 2;
}
#work {
background: red;
width: 50%;
height: 100vh;
float: left;
position: absolute;
}
#description {
background: blue;
width: 50%;
height: 1200px;
float: right;
font-size: 30px;
}
#footer {
background: black;
width: 100%;
height: 100px;
position: absolute;
z-index: 3;
bottom: 0;
}
If I understand your question correct, this should do the trick (although it depends very much on JavaScript unfortunately).
// Fix work column on scroll
contentStart = $("#content").offset().top ;
contentSize = $("#content").height() ;
window.onscroll = function(){
if( window.XMLHttpRequest ) {
var position=window.pageYOffset;
// calculate the position of the footer and the actual seen window
var docViewTop = $(window).scrollTop();
var docViewBottom = docViewTop + $(window).height();
var elemTop = $("#footer").offset().top;
if ( position > 300 && !(docViewBottom >= elemTop)) {
$('#work').css({'position':'fixed', 'top':'0', 'height':'100vh'});
} else {
// if the footer is visible on the screen
if(docViewBottom >= elemTop) {
$('#work').css({ 'top': 0 - (docViewBottom - elemTop) }); // scroll the #main div relative to the footer
} else {
$('#work').css({'position':'relative', 'top': 'auto'}) ;
}
}
}
}
For further informations about the calculations, perhaps this question on stackoverflow is useful.
Edit: Andrew Haining posted his answer in between of my answer, perhaps give his link a try and maybe it's a better (more proper) solution. Unfortunately I haven't actualised this page when I was testing your code in JSFiddle and I didn't see his answer.
If you want to use my script, make sure you can test it with different resolutions. It works just fine for my resolution in JSFiddle, I didn't test any other.
I'm not 100% sure what you want, but if you remove the position: absolute and the bottom: 0 from the footer, and put a div with class='clearboth' above the footer, it seems to do what you need.
CSS
.clearboth {
clear: both;
}
This is a drawing of what I see on your fiddle;
Do you want the red and the blue to always be touching the black?
I don't see the red overlying the black
You should use jQuery to add a class containing the position:fixed value when the scroll position of the page is less than the inline position of the #work div. Once it scrolls past the position, remove the class and have the element fall back in line.
You can achieve this using the following jQuery methods.. .scrollTop() .offset().top() and $(window).height().
This tutorial will give you an understanding of what you need to do to achieve the necessary results, you will just have to change the calculation slightly using $(window).height(), $('#footer').height() and a few other changes to get what you desire.
Based on the question you asked i think this is what you mean. The red div should be fixed when it gets to the top but be absolute when it is below the top for scrolling and the black footer should be below the red while scrolling, check this code i have done for you. just add this jquery script and run it.
<script type="text/javascript" src="js/jquery.js"></script>
<script>
$(document).ready(function() {
$(window).scroll(function () {
console.log($(window).scrollTop());
if ($(window).scrollTop() >= 322) {
$('#footer').css("z-index","1");
$('#work').css(
{
"background": "red",
"width": '50%',
'height': '100vh',
'float': 'left',
'position': 'fixed',
'top': '0'
});
}
if ($(window).scrollTop() <= 322)
{
$('#work').css(
{
"background": "red",
"width": "50%",
"height": "100vh",
"float": "left",
"position": "absolute"
});
};
});
});
</script>
If not exactly a parallax, this is somewhat close to how parallax works, containers moving at different speeds, and some containers sitting fixed or scrolling when they attain a particular top/bottom offset in the viewport.
There's plugin that can do it. Skrollr
You can use Skrollr along with skrollrcss, and it'll make sure how the containers take position on screen based on scrolltop of the window and the container specifically.
I have a JavaScript menu bar that is positioned on my webpage, then when the browser bar reaches the top of the menu it locks into a fixed position and moves with the window. However, i need to contain the menu within a div, how can this be done?
This is my menu bar:
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>
<script type='text/javascript'>
$(window).load(function(){
$(window).scroll(function(){
if ($(window).scrollTop() >= 200)
{
$("#floatbar").css({position:'fixed',left:'0',top:'0'});
}
else
{
$("#floatbar").css({position:'absolute',left:'0',top:'200px'});
}
});
});
</script>
and this is my html:
<div id="menu_runner">
<div id="floatbar">
Issue 49<br />
Issue 48<br />
Issue 47<br />
Issue 46<br />
</div>
</div>
and my css:
#menu_runner {
width: 100px;
height: 2000px;
float: right;
position: relative;
}
#floatbar {
width: 70px;
position: absolute;
top: 200px;
}
where the menu runner is the containing div of the menu, and the floatbar obviously contains the menu which runs the JavaScript.
However when I try this code, the menu sticks to the left and 200px from the top, and not within the menu_runner div. How can i make the floatbar be positioned in the menu_runner div and then scroll down with the JavaScript within the div as it should.
Here's a live demo of my code: http://jsfiddle.net/f4dhy/
Here's one method:
Live demo
Javascript:
$(window).scroll(function() {
if ($(window).scrollTop() >= 200) {
screenWidth = $(window).width();
containerWidth = $("#menu_runner").outerWidth(true);
pos = screenWidth - containerWidth;
$("#floatbar").css({
position: 'fixed',
left: pos,
top: '0'
});
}
else {
$("#floatbar").css({
position: 'absolute',
left: '0',
top: '200px'
});
}
});
The idea is get the screen's width, the menu container's width, and from that we get figure out how to position the left edge of the menu so that it lines up with the container.
In your css, add:
body{
padding: 0;
margin: 0;
}
which fixes the slightly off positioned problem you'd see without it due to the default margin set by browsers.
You might see the menu kinda bounce into position when you scroll it to the top, which is unfortunate but hopefully not too much of a problem.
This doesn't work in IE6 because of the position:fixed being used. You'll have to search for a solution to that. I'm not too familiar with what the accepted workaround is (but a quick google search shows a few hacks that might work)
I'm curious though, any reason you want to do it this way? Why have the menu scroll with the screen and then stop at the top? Why not just fix it to one place on the screen from the start, something like this?
How do I get the footer to take up the remainder of the page's vertical space without actually knowing how tall the content is? I can't figure out how to use javascript/css to accomplish this...
Just to be clear...
Scenario 1: The content ends halfway through the page, the footer would take up the remaining half. No scrollbars necessary.
Scenario 2: The content takes up 1 1/2 pages, the footer would take up only what it needs (~200px). Scrollbars necessary.
<body>
<div id="content">
<div id="footer">
</body>
Oh, and I'm open to a jQuery way of doing this.
You can always try using jQuery to detect the height of the browser window, then deduct the content height from it to assign a height in pixels to the footer.
Though it would be different on different sized monitors.
To get the browser height, and store it as a variable you can use:
var browserHeight = $(window).height();
Content height can be stored using:
var contentHeight = $("#content").height();
Footer height can then be worked out like so:
var footerHeight = browserHeight - contentHeight;
$("#footer").height(footerHeight);
So altogether, you'd have:
<script type="text/javascript">
$(document).ready(function(){
//Get Browser and Content Heights
var browserHeight = $(window).height();
var contentHeight = $("#content").height();
//Set footer height
var footerHeight = browserHeight - contentHeight;
$("#footer").height(footerHeight);
});
</script>
Or something like that :)
Anthony
I would do something like this:
$(function() {
var windowHeight = $(window).height();
if ($('body').height() < windowHeight) {
$('#footer').height(windowHeight - $('#content').height());
}
});
You probably need to adjust this according to paddings/margins, but this is how it should work, basically.
You can 'fake' it with just CSS. Example:
<div id="footer-background"></div>
<div id="content"></div>
<div id="footer"></div>
CSS:
#footer-background {
position:absolute;
width: 100%; // or the width of your content depending on if its fixed width, etc
height: 100%;
z-index: -1;
margin: 0 auto; // if you use a fixed width this will center it
top: 0;
background: #000;
}
#content, #footer {
position: relative;
width: 100%; // or fixed width
margin: 0 auto; //if you use a fixed width this will center it
background: #fff;
clear: both;
}
#footer {
background: #000;
}
What this does is set an empty div that contains the same background css as the footer but it actually fills the whole page. (height and width). The content has a white background so it will overlap the footer-background as far as the content height. Then your footer will scale according to your footer content but from a visual perspective the footer will appear to take up the rest of the page if it doesn't scroll.
Why use JavaScript when this can be done with CSS?
Firstly set the margin to 0
*{margin: 0;}
Make sure the page fills the browser in height wise
html,body{height: 100%;}
Create the content to fill 100% just remove the height of the footer
#content{
min-height: 100%;
height: auto !important;
height: 100%;
margin: 0 auto -200px;
}
then set the height of the footer, make sure its the same as the margin in #content
#footer{height: 142px;}
Jobs a good one :)
No need to use javascript! You can use only css for this:
#footer {
position:absolute;
top: 0;
left:0;
right:0;
bottom:0;
z-index:-100;
/* height: 100%; you don't need this, but you can put it to be sure */
}
What it does is position this layer on the whole screen (relative to the screen- not page, so it will have the same position after you scroll also) and put it far behind the other layer (z-index: -100)
Simple solution:
body {
min-height: 100%;
position: relative;
}
#footer {
width: 100%;
position: absolute;
left: 0;
bottom: 0;
}
Adding these properties / rules to your css should do what you're looking for. Let me know if it works.
If you do use a script to size the footer, be sure to call the same function on resize events.
<!doctype html>
<html lang="en">
<head>
<meta charset= "utf-8">
<title>untitled</title>
<style>
#footer{border:blue solid thick; position:relative}
</style>
<script>
window.onload= window.onresize=function(){
var b=document.documentElement.clientHeight,
f=document.getElementById('footer'),h=f.offsetTop,
hx= Math.floor(.96*(b-h));
f.style.height= hx+'px';
}
</script>
</head>
<body>
<h1>h1</h1>
<div>content</div>
<div id="footer">footer</div>
</body>
</html>