Preview from the web inspector
Hi, I am trying to freeze the Table header so that when you scroll, the header remains at a fixed position.
I currently don't have access to HTML because am using a PHP Maker And I don't know how to do that.
Please, can someone assist me freezing the table header with a CSS or a javascript code?
The screenshot of the table contains the table header and tr values
Thank you.
In CSS you can use
.sticky{
position:fixed;
}
For a javascript code, you can use;
window.onscroll = function() {myFunction()};
var header = document.getElementById("myHeader");
var sticky = header.offsetTop;
function myFunction() {
if (window.pageYOffset >= sticky) {
header.classList.add("sticky");
} else {
header.classList.remove("sticky");
}
}
You can always try to do it with CSS/Javascript. Since you can't access the html file, you'll have to add style options to existent classes or add classes with Javascript. The css could be something like this:
/* The sticky class is added to the header with JS when it reaches its scroll position */
.sticky {
position: fixed;
top: 0;
width: 100%
}
Then you'd need a script to add the sticky class to the header whenever the user scrolled. Something like this:
// When the user scrolls the page, execute myFunction
window.onscroll = function() {myFunction()};
// Get the header
var header = document.getElementsByClassName("ewBox");
// Get the offset position of the navbar
var sticky = header.offsetTop;
// Add the sticky class to the header when you reach its scroll position. Remove "sticky" when you leave the scroll position
function myFunction() {
if (window.pageYOffset >= sticky) {
header.classList.add("sticky");
} else {
header.classList.remove("sticky");
}
}
If you don't understand anything, take a look at this example or don't hesitate to ask me.
.ewTableHeader{
position: fixed;
}
or
.ewTableHeader {
position: -webkit-sticky;
position: sticky;
top: 0;
z-index: 999;
}
Related
I've built a sticky navbar based on an example from W3 schools. It's working very well — except when I resize the window, the alignment of the nav menu to the page content is incorrect.
You'll see that I've got some code that finds the correct offset for left side of menu, by checking another element on the page. It then adds some left padding to align it properly. (Without this, the position:fixed value just sends the sticky nav to the far left of the page).
This works great on scroll! However, if the window is resized horizontally, that left padding value doesn't update.
I've tried a few iterations of $(window).resize but haven't been able to get it to work. I'm sure it's an easy line of code I'm just not figuring out. Thanks in advance!
setTimeout(function () {
// When the user scrolls the page, execute myFunction
window.onscroll = function() {myFunction()};
// Get the navbar
var navbar = document.getElementById("app");
// Get the offset position of the navbar
var sticky = $("#app").offset().top
// Find correct offset for left side of menu (by checking #title element)
var element = document.getElementById('title');
var leftPos = element.getBoundingClientRect().left + window.scrollX;
var roundLeft = (Math.round(leftPos)) - 5;
// Add the sticky class to the navbar when you reach its scroll position. Remove "sticky" when you leave the scroll position
function myFunction() {
if (window.pageYOffset >= sticky) {
navbar.classList.add("sticky")
navbar.style.cssText = "padding-left:" + roundLeft + "px!important";
} else {
navbar.classList.remove("sticky");
navbar.style.cssText = "padding-left:inherit";
}
}
}, 4000);
.sticky {
position: fixed;
top: 0;
width: 100%;
background: rgba(255, 255, 255, 0.99);
z-index: 9 !important;
max-width: none !important;
box-shadow: 0px 1px 10px #999;
}
(I'm using setTimeout because our Shiny app takes a few seconds to load and for the content to populate.)
You should use pure CSS solution with position: sticky
It does have acceptable percentage of browser support:
https://caniuse.com/#feat=css-sticky
Since it's just the styling, it may be fine to show it static in the old browsers.
I'm attempting to resolve an issue with a "sticky" horizontal menu.
It technically works, in that the menu's position is fixed while the pages scrolls up and down.
The issue at the moment is that then the page is scrolled back up to the original position, the new resting place of the objects below the sticky menu return to the top of the browser. If that makes sense.
Here's the javascript in use:
<script>
// When the user scrolls the page, execute myFunction
window.onscroll = function() {myFunction()};
// Get the navbar
var navbar = document.getElementById("navbar_cont");
// Get the offset position of the navbar
var sticky = navbar.offsetTop;
// Add the sticky class to the navbar when you reach its scroll position. Remove "sticky" when you leave the scroll position
function myFunction() {
if (window.pageYOffset >= sticky) {
navbar.classList.add("sticky")
} else {
navbar.classList.remove("sticky");
}
}
</script>
And the accompanying css
.sticky {
position: fixed;
top: 0;
width: 100%;
}
.sticky + #call-to-action {
padding-top:164px;
}
Any help would be appreciated. Thanks!
let's get straight to the point:
My code looks like the following:
<div id="keep_up">
<div id="thread_menu">
<div id="new_thread">
</div>
</div>
</div>
And my css:
#keep_up {
position: fixed;
width: 13%;
}
#thread_menu{
height: 80vh;
width: 100%;
float: left;
position: relative;
}
Now i use this for a forum. and this is basically to show the active and new threads on the side of the screen.
However. When watching a thread, the header disappears (Wich makes sense because we are scrolling down).
but i want the thread menu to stay on my side (So that it is always visible). In this case that is happening because my keep_up div has position: fixed. But i only see half of the thread menu becuase it is too long and won't scroll up.
My question:
I want the thread menu to scroll up, untill it reaches the top of my window. From then on i want it to stay there.
How do i do this?
I saw a few examples but none of them worked for me.
EDIT: Code i tried:
<script src="jquery.min.js">
$(window).scroll(function () {
var margin = null;
$(window).on("scroll", function () {
var scrollHeight = $(document).height(),
scrollTop = $(window).scrollTop(),
offsetBottom = 110, // Offset depending on the height of the footer
offsetTop = 100, // Offset depending on the height of the header
positionTop = $(".keep_up").offset().top,
affix;
if (margin != null && (scrollTop + margin <= positionTop)) {
// The sidebar has reached the bottom and is still on the bottom
affix = false;
} else if (positionTop + $(".keep_up").height() >= scrollHeight - offsetBottom) {
// The sidebar has reached the bottom
affix = 'bottom';
} else if (scrollTop <= offsetTop) {
// The sidebar has reached the top
affix = 'top';
} else {
// The sidebar is midway
affix = false;
}
// If the sidebar hasnot changed his state, return;
if ($(".keep_up").hasClass('at' + (affix ? '-' + affix : ''))) return;
if (affix == 'bottom') {
margin = positionTop - scrollTop;
} else {
margin = null;
}
// If the related class is added to the div
$(".keep_up").removeClass('at at-top at-bottom').addClass('at' + (affix ? '-' + affix : ''))
});
});
</script>
And the CSS:
.keep_up{
/*position: fixed;*/
width: 13%;
}
.keep_up.at {
top: 1px;
position: fixed;
}
.keep_up.at-top{
}
.keep_up.at-bottom {
top: 438px;
position: absolute;
}
modify this on HTML:
<div id="prevent"></div>
<div id="keep_up" data-spy="affix" data-offset-top="200">
Add this CSS:
.affix{position: fixed !important; top:0px; z-index:999;}
.affixpatch{margin-top:100px !important;}
this will fix the div when you scroll down 200px. Change data-offset-top value to reach it on different break point.
.affixpatch is a class that will be loaded with next jquery function. it prevents to hide content behind top fixed div. Change margin-top to another value if this don't solves the "hide content" problem that always generate affixing divs.
<script>
$(function() {
//caches a jQuery object containing the header element
var header = $(".affix");
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 200) {
$('#prevent').addClass("affixpatch");
} else {
$('#prevent').removeClass("affixpatch");
}
});
});
</script>
Hope it helps. If not, you may have some class that rewrite or impede the correct function of this affix.
I've tested this hundreds of times, usually to fix navbars.
SCROLL:
Using overflow to scroll content:
#keep_up{
max-height:400px;
width: auto;
overflow:auto;}
This will scroll the content inside #keep_up div (or use it in another one)
NOTE: you must declare a fixed max height for this div. Set max-width only if you need.
You can use %, em, rem... no need to be px for fix the max witdth. (to get a responsive effect, use responsive measurements)
If I understand your scenario correctly, the way to do this might be to use jQuery (or native JS, but you've tagged jQuery so I'm assuming that's in play).
There's a plugin that handles this kind of thing: http://leafo.net/sticky-kit/
I'd suggest you look at the plugin source code to see how it works - an event handler function on $(window).scroll() which then toggles classes on your #thread_menu to fix it in place. To keep your code lightweight, you probably don't need everything the plugin provides.
I am working with jQuery in a fix element which is a table header, I am going to show you the current behavior and then I will tell you the behavior I need
Here is the regular state
then when you scroll down the page, it looks like this which is perfect
but if you keep scrolling, it table header does not respect the last element in the table and keeps going down the page
so at the end it will look like that, only the table header.
What I need is to keep that table header scrolling down until it reachs with the last element on the table or something like that.
I did a jsFiddle http://jsfiddle.net/tdkwrde4/ where clearly the yellow element should stop when the table disappear from the screen.
Is it clear?
Here is the code
var fixTableHeader = function() {
$('.grid-header').first().addClass('sticky');
var sticky = $('.sticky'),
stickyOffset = sticky.offset().top;
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= stickyOffset) {
sticky.addClass('fixed')
} else {
sticky.removeClass('fixed');
}
});
};
css
.sticky {
background: orange;
}
.fixed {
border-width: 0;
border-collapse: collapse;
position: fixed;
top: 0;
left: 0;
margin-left: 1.3%;
}
any recommendation ?
Good morning I am working on a sticky header for my site, I've got it working but it seems to snap into place, I want to be smooth! how do I go about this?
My site: http://www.trevorpeters.co.uk/tpwebdesign
CSS:
.sticky {
position: fixed;
width: 100%;
left: 0;
top: 0;
z-index: 100;
border-top: 0;
}
JS
$(document).ready(function() {
var stickyNavTop = $('.nav').offset().top;
var stickyNav = function(){
var scrollTop = $(window).scrollTop();
if (scrollTop > stickyNavTop) {
$('.nav').addClass('sticky');
} else {
$('.nav').removeClass('sticky');
}
};
stickyNav();
$(window).scroll(function() {
stickyNav();
});
});
By default the header is in your document flow, 'pushing' the rest of the content down. If you make it sticky, it doesn't push the rest of the document down making it snap upwards. You can fix this by making your banner sticky from the start and giving your content a top margin equal to the height of your header. This way you can just get rid of the javascript all together.