Develop Reference

How to make an element become fixed when 50px from the top of the screen

I have a html div element that scrolls with the page but I would like it to become fixed once it reaches 50px from the top of the screen...
How is this done?
My div id is #box
Thanks!
-Ina

If you want it to be fixed at the top of the page at some distance from the top, you can check the top offset of the element and change the class when it reach the distance you want.
Here is the jquery code for your reference
jQuery(document).scroll(function() {
var documentTop = jQuery(document).scrollTop();
console.log('this is current top of your document' + documentTop );
//box top is 891
if (documentTop > 841) {
//change the value of the css at this point
jQuery("#box").addClass("stayfix");
}
else
{
jQuery("#box").removeClass("stayfix");
}
});
You need to be more specific about what have you done so far. For eg, how did you make the div element to scrolls inside the page. using css or js/jquery animation features?That will help us to give more specific answer.
**Edited According to your fiddle.

They are right, this question is duplicate. Here is a code I made with answers from the forum.
var box_top = $("#box").offset().top;
$(window).scroll(function (event) {
if ($(window).scrollTop() >= (box_top - 50)) {
$("#box").css({position:"fixed",top:"50px"});
} else {
$("#box").css({position:"relative"});
}
});
Hope it helps anyway.
https://jsfiddle.net/ay54msd5/1/

Try something like this. It's a solution using jquery (hopefully not a problem) that checks the scrollHeight of the page every time the page scrolls. If the scrollHeight is greater than a certain threshold, the element becomes fixed. If not, the element is positioned relatively (but you can do whatever you want in that case.
$(document).ready(function() {
var navFixed = false;
var $box = $("#box");
var topHeight = 50;
$(document).scroll(function() {
if ($(document).scrollTop() >= topHeight && !navFixed) {
$box.css("position", "fixed");
navFixed = true;
}
else if ($(document).scrollTop() < topHeight && navFixed) {
$box.css("position", "relative");
navFixed = false;
}
});
});
You would have to write some additional CSS targeting the #box element that tells it what coordinates you'd like it to be fixed to.

Div stops at the top when scrolling

I am trying to make a div change class to fixed when it reach the top of the page.
I have this JavaScript code.
<script type="text/javascript">
$(function () {
var top = 200;
var y = $(this).scrollTop();
if (y >= top) {
// if so, add the fixed class
$('#kolonne-v').addClass('fixed');
} else {
// otherwise remove it
$('#kolonne-v').removeClass('fixed');
}
});
</script>
What am i doing wrong?

Demo jsFiddle
JS
$(function () {
var top = 200;
//this should be the offset of the top of your div
//which can be found by doing the following line
//var top = $("#kolonne-v").offset().top;
$(window).on('scroll', function () {
if (top <= $(window).scrollTop()) {
// if so, add the fixed class
$('#kolonne-v').addClass('fixed');
} else {
// otherwise remove it
$('#kolonne-v').removeClass('fixed');
}
})
});
Description
This uses the jquery .on('scroll', handler) method, documentation here. The basic principal is that on document.ready you set the scroll point when your div becomes fixed to the top. Then you setup an .on('scroll', handler) event that triggers whenever the window is scrolled in. If the user scrolls to your point you add the fixed CSS class.

Jquery when the user hits bottom of the page

I've been working on a scroll to top function for my website, and that part of it works fine. My problem is however that I have a fixed div that is overlapping my footer when it hits the bottom of the page.
Here is the function that I have working.
$(document).scroll(function (e) {
if (document.body.scrollTop >= 800) {
$('#beamUp').show(1000);
} else {
$('#beamUp').hide(1000);
return false;
}
});
Is there somehow I could detect when I hit that part of the page and stop the div from moving past that.Help is much appreciated!
jsFiddle: http://jsfiddle.net/zazvorniki/RTDpw/

Just get the height of the page, minus the height of the div in question, as well as the footer... make sure the top is never greater than that value... you'll also need an onresize event handler re-evaluate that value.
looking at your jsfiddle... here are my edits
In your scroll listener, I am checking for the position of the page, and adjusting the bottom position of the floater appropriately. I also set the initial display:none, so you don't need to call .hide() in your initial script. In addition, resizing the window has the effect of scrolling for your use, so I changed the listener for both events.
$(document).on('scroll resize', function (e) {
var viewHeight = $(window).height();
var viewTop = $(window).scrollTop();
var footerTop = $("footer").offset().top;
var baseline = (viewHeight + viewTop) - footerTop;
var bu = $("#beamUp").css({bottom: (baseline < 0 ? 0 : baseline) + 'px'});
if (viewTop >= 50) {
bu.show(1000);
} else {
bu.hide(1000);
}
});

How to stop floating div at specified point using jQuery

I am trying to stop a floating (sliding) div when it reaches the bottom of a containing div but it isn't working. The variable bottom is the lowest point on the page of the containing div but for some reason doesn't act as it should. Anyone have a better method?
$(document).ready(function () {
var top = $('#buttonsDiv').offset().top - parseFloat($('#buttonsDiv').css('margin-top').replace(/auto/, 0));
var bottom = $('#mainBody').offset().top + $('#mainBody').height();
$(window).scroll(function (event) {
// what the y position of the scroll is
var y = $(this).scrollTop();
var z = y + $('#buttonsDiv').height();
// whether that's below the form
if (y >= top && z <= bottom) {
// if so, add the fixed class
$('#buttonsDiv').addClass('fixed');
} else {
// otherwise remove it
$('#buttonsDiv').removeClass('fixed');
}
});
});

Try the below conditions:
if (y >= top && z <= bottom) {
// if so, add the fixed class
$('#buttonsDiv').addClass('fixed');
} else if(z > bottom) {
// otherwise remove it
$('#buttonsDiv').removeClass('fixed').addClass('absolute');
} else {
// otherwise remove it
$('#buttonsDiv').removeClass('fixed');
}
Once you scroll past the container DIV (#mainBody), the floating DIV (#buttonsDiv) should be positioned 'absolute' to the bottom of the container DIV.

Simply defining a margin-bottom with floating div or padding-bottom with external div in this case should help. I have used a similar thing in the following website: www.emotionstorm.com to stop the shopping cart below the top banner.
Please let me know if you need help for a similar code.

Bottom out fixed floating sidebar

ive been using this fixed floating sidebar courtesy of (http://jqueryfordesigners.com/fixed-floating-elements/). This works great, my only problem is that I dont know how to force a bottom out so the fixed positioning will never be taller than the viewable area. My sidebar has the ability to add content and sometimes when there is a lot of content the sidebar extends off the page at the bottom. Can someone shoot me in the right direction? Here is the javascript for the sidebar.
var msie6 = $.browser == 'msie' && $.browser.version < 7;
if (!msie6) {
var top = $('#comment').offset().top - parseFloat($('#comment').css('margin-top').replace(/auto/, 0));
$(window).scroll(function (event) {
// what the y position of the scroll is
var y = $(this).scrollTop();
// whether that's below the form
if (y >= top) {
// if so, ad the fixed class
$('#comment').addClass('fixed');
} else {
// otherwise remove it
$('#comment').removeClass('fixed');
}
});
}
});

$('#comment').css({'overflow-y':'scroll', max-height:'100%'});