I have a submenu that is scrolls with the site using position:fixed; I am using jQuery to calculate where it should sit as it's outside of the main content of the site.
It's working fine except for when I resize the browser window; it then disappears from view. Looking at the code in dev tools, it's still there and should be visible.
Perhaps there is something wrong with my script? Your help would be very much appreciated.
jQuery(document).ready(function() {
// Sub Menu Placement
calculation();
jQuery(window).resize(calculation);
function calculation() {
var location = jQuery(".page-content-section .page-content-section-inner").offset();
var locationTop = jQuery(".header").offset();
var left = location.left;
left = left - 0;
var top = locationTop.top;
top = top + jQuery('.header').height();
jQuery("#submenu").css({
//'position': 'absolute',
'position' : 'fixed',
'top': top + 'px',
'left': left + 'px'
});
}
});
I figured out the issue:
I changed this line:
top = top + jQuery('.header').height();
to this:
top = jQuery('.header').height();
Related
I'm building a website with a sidebar that, once the user scrolls past a certain point it becomes fixed on the site. This code works fine.
The issue that I am coming into is that the sidebar is overlapping the footer when the user scrolls to the bottom of the page. I wrote code to detect when the bottom of the sidebar hits the same position as it's containing element - when that happens I am taking the position of the bottom of the containing element and subtract the height of the sidebar element and using that number to give the sidebar it's new "top" (while also changing the position to "absolute").
This is where I am running into the issue - once the sidebar is overtop of the footer as the user scrolls the code that is getting called alternates between the normal "fixed" position code and the "absolute" positioned code giving it this flickering effect.
For the life of me I can't figure out why the "fixed" code keeps getting called.
Here is the code:
( function( $ ) {
var sidebar_pos = $('#secondary')[0].getBoundingClientRect();
var pos_top = sidebar_pos.top + window.scrollY; //need this to get the pos of TOP in the browser - NOT the viewport
var main_pos = $('.main-content')[0].getBoundingClientRect();
var main_bottom = main_pos.bottom + window.scrollY;
var stop_pos;
var i = 0;
$(window).scroll(function(event){
var scroll = $(window).scrollTop();
var produce_pos = $('.produce')[0].getBoundingClientRect();
var pos_bottom = produce_pos.bottom + window.scrollY;
//console.log("scroll "+scroll);
//console.log("top " + pos_top);
console.log(main_bottom);
console.log('bottom ' + pos_bottom);
if( scroll >= pos_top){
if ( pos_bottom >= main_bottom ){
//if the sidebar would end up overlapping the footer
if(i == 0){
//only need to set this once, not on every scroll
stop_pos = main_bottom - $('#secondary').height() ;
}
$('#secondary').removeClass('hover').css({
position: 'absolute',
margin:0,
left: sidebar_pos.left,
top: stop_pos
});
i++;
} else {
$('#secondary').addClass('hover').css({
position: 'fixed',
left: sidebar_pos.left,
marginTop: '1.5em',
top: 20
});
setTimeout(() => {
$('*[data-widget="comet"]').addClass('active');
}, 5000);
setTimeout(() => {
$('*[data-widget="produce"]').addClass('active');
}, 7000);
}
} else if( scroll < pos_top && $('#secondary').hasClass('hover') ){ //if user scrolls up past original pos of sidebar, remove effects
$('#secondary').removeClass('hover').css({
position: 'relative',
left: 'auto',
top: 'auto'
});
i = 0;
}
});
}( jQuery ) );
I also have a codepen of the script in action.
https://codepen.io/antlaur00/pen/ExyrgYR
Any help is much appreciated! Thanks!
Well its pretty simple, just add Z-index property to your footer CSS, that way it will always overlap your sidebar .
You can refer to this article regarding the z-index property
https://www.w3schools.com/cssref/pr_pos_z-index.asp
I wanted to achieve an effect like this http://www.offset.com/
as you can see when it scrolls it slowly covering the carousel rather than scrolling with it.
I've tried using background fixed but the problem is the elements inside it will not stay in its position
Maybe there is a good technique in achieving this, Thanks
this is called parallax scrolling here is an example of how to do this using Jquery :
Live Demo
// Y axis scroll speed
var velocity = 0.5;
function update(){
var pos = $(window).scrollTop();
$('.container').each(function() {
var $element = $(this);
// subtract some from the height b/c of the padding
var height = $element.height()-18;
$(this).css('backgroundPosition', '50% ' + Math.round((height - pos) * velocity) + 'px');
});
};
$(window).bind('scroll', update);
an other example it might help DEMO
So I am trying to show a tooltip like box as I scroll my webpage and I would like it to follow the scrollbar along the right side of the page.
I looked around and found something to attempt to accomplish that as shown below:
function returnPercentHeight(){
var a = document.getElementById('rightPanel').scrollTop;
var b = document.getElementById('rightPanel').scrollHeight - document.getElementById('rightPanel').clientHeight;
return ((a/b) * 100);
}
I then append a % to the end and set the top margin of the tooltip to that returned value. This works pretty well (sort of) I have to adjust the return((a/b) * x) part (x) to make it follow the scrollbar based on the size of the browser window. Is there a better way to accomplish what I am trying to do? (NOTE: I can only use javascript, no JQuery please.)
EDIT:
Only the div given an ID of 'RightPanel' is scrolling, I am not using the scrollbar on the browser, but a scrollbar on an inner div.
There are three ways to do so:
First:
is to use the fixed position as following;
Position: Fixed;
Second:
With jQuery;
$(function(){
$(window).on('scroll', function() {
var scrollPOS = $(document).scrollTop();
$('.scroll').css({
top: scrollPOS
});
}).scroll();
});
Third:
Same as the previous, only animated;
$(window).on('scroll', function() {
$("#div").stop().animate({
"marginTop": ($(window).scrollTop()) + "px",
"marginLeft":($(window).scrollLeft()) + "px"}, "slow" );
});
Although IE doesn't support, this is the coolest I've seen:
// get
var x = window.scrollX,
y = window.scrollY;
// set
window.scrollTo(1, 2);
So I have this 100% witdh container with lots of images in it. I would like to pan it horizontally when I mouseover the parent container.
I've come quite far but I have a few problems.
Here is the fiddle
First I have to set the margin left to be percentage based, else it wont show all the images. To do this, I have to get the full width of the inner container, but I'm unable to do this.
$('.merken').mousemove(function (event) {
var left = event.pageX;
$('.slider').css({
'margin-left': '-' + left + 'px'
});
});
The thumb-container now has a fixed width, but i need to make this an auto width. Right now this makes sure that the images in the container dont show one-by-one. How do I fix this?
.thumb-container { width:2000px;}
Thanks
You can do something like this:
Fiddle
$('.merken').mousemove(function(event){
var left = (event.pageX*100)/$('.thumb-container').width();
$('.slider').css({
'margin-left': '-'+left+'%'
});
});
and
.thumb-container{
width:200%;
}
I'm not sure about what you want to do. But I think that you should use the .width() jquery method:
$('.merken').mousemove(function(event){
var left = event.pageX;
var percentleft = left/$('.merken').width();
var sliderleft = $('.slider').width()*percentleft;
$('.slider').css({
'margin-left': '-'+sliderleft+'px'
});
});
For those intrested, fixed it like this:
var conb = $('.slider').width();
$('.merken').mousemove(function(event){
var left = (event.pageX*100)/conb;
$('.slider').css({
'margin-left': '-'+left+'%'
});
});
I know this question has been asked before, but I'm pretty sure after checking them out, that none of the navigation bars where built like this one.
I'm basically having trouble making the navigation bar "seamlessly" switch to a fixed position at the top of the screen after scrolling past its original position, then back again.
I have included the code, and an example here: http://jsfiddle.net/r2a6U/
Here is the actual function which makes the div switch to fixed position mode:
var navPos = $('#navContainer').offset().top;
$(window).scroll(function(){
var fixIT = $(this).scrollTop() >= navPos;
var setPos = fixIT ? 'fixed' : 'relative' ;
var setTop = fixIT ? '0' : '600' ;
$('#navContainer').css({position: setPos});
$('#navContainer').css({'top': setTop});
});
Any help would be much appreciated.
Cheers
You can fix your issue to remove the styles instead of setting them to relative and 600px. I suggest you add/remove a class in JavaScript which will then apply the fixed CSS though. You will end up with much nicer and cleaner JavaScript.
Also make sure you center #navContainer properly when it's fixed.
jsFiddle
CSS
#navContainer.fixIT {
position:fixed;
top:0;
/* these will ensure it is centered so it doesn't jump to the side*/
left:0;
right:0;
text-align:center;
}
JS
var navPos = $('#navContainer').offset().top;
$(window).scroll(function(){
var fixIT = $(this).scrollTop() >= navPos;
if (fixIT)
$('#navContainer').addClass('fixIT');
else
$('#navContainer').removeClass('fixIT');
});
Fix it in here: jsFiddle
Only a small script update:
var navPos = $('#navContainer').offset().top;
$(window).scroll(function(){
var navContainer = $('#navContainer');
if( $(this).scrollTop() >= navPos ) {
// make it fixed to the top
$('#navContainer').css({ 'position': 'fixed', 'top': 0 });
} else {
// restore to orignal position
$('#navContainer').css({ 'position': 'relative', 'top': 600 });
}
});