I'm trying to figure out how to repeatedly clone the contents of a div on scroll, thus giving the impression that the page goes on forever and ever. My markup thus far is as follows and a fiddle here too https://jsfiddle.net/guht49La/:
var inserated = false
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 800 && inserated == false) {
var $button = $('.hd').clone();
($button).insertBefore('.ap');
inserated = true;
} else {
}
});
Although this only inserts it once, as I want to keep inserting it every 800px (for example) thus giving the impression that the page goes on forever and ever. Any suggestions on this would be greatly appreciated!
This will work
var inserated = false
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 800) {
var $button = $('.hd').clone();
($button).insertBefore('.ap');
inserated = true;
} else {
}
});
This is a complete guess, but perhaps give this a go:
var nextInsert = 800;
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= nextInsert) {
var $button = $('.hd').clone();
($button).insertBefore('.ap');
nextInsert += 800;
} else {
}
});
It is working, but it clones the div just once because you changed the inserated variable to true after inserting the first clone. It will work indefinitely if you delete it:
var inserated = false
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 800 && inserated == false) {
var $button = $('.hd').clone();
($button).insertBefore('.ap');
// inserated = true;
} else {
}
});
Notice that inserated = true; is commented out.
That code, however, can (and almost certainly) creates a huge amount of clones, so I'd suggest controlling the scrolling insertion point using something along the lines of Nat Karmios answer
My suggestion is similar to jbmartinez answer, except I would drop the inserated variable altogether and use classes to determine elements to be cloned:
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 800) {
var $button = $('.hd').not(".cloned").clone();
$button.addClass("cloned");
($button).insertBefore('.ap');
} else {
}
});
Would still need to adjust the scrolling mark as noted above tho.
Related
I need to load 2 different animated graphic on window scroll up/down on a website by triggering some functions, it's working but its buggy as the functions are triggered too many times when scrolling:
$(window).scroll(function() {
var scroll = $(window).scrollTop(),
headerHeight = $('.navbar').outerHeight();
if(scroll > headerHeight) {
loadLogoAnimeDown();
}else{
loadLogoAnimeUp();
}
});
You need a way to check if the functions have been called (and logo has been loaded), so you can use a variable for that. After the logo has been loaded, you set the variable as false, which prevents them from loading more than once.
var downNotLoaded = true;
var upNotLoaded = true;
$(window).scroll(function() {
var scroll = $(window).scrollTop(),
headerHeight = $('.navbar').outerHeight();
if(scroll > headerHeight) {
if(downNotLoaded){
loadLogoAnimeDown();
downNotLoaded = false;
}
}else{
if(upNotLoaded){
loadLogoAnimeUp();
upNotLoaded = false;
}
}
});
I think you might find this is a very hacky way to do it, but this should work.
var animated;
$(window).scroll(function() {
var scroll = $(window).scrollTop(),
headerHeight = $('.navbar').outerHeight();
if(scroll > headerHeight) {
if (animated == true) {
loadLogoAnimeDown();
animated = false;
}
} else{
if (animated == false) {
loadLogoAnimeUp();
animated = true;
}
}
});
Added this code to my sticky element using position:sticky
var $sticky = $('.grid-container .sticky'),
$stickyTo = $('.grid-container .stickyTo'),
stickyToTop = $stickyTo.offset().top,
stickyToBottom = stickyToTop + $stickyTo.outerHeight();
$(window).on('scroll', function() {
var scroll = $(window).scrollTop(),
stickyTop = $sticky.offset().top,
stickyBottom = $sticky.offset().top + $sticky.outerHeight();
if (stickyBottom >= stickyToBottom) {
if (scroll < stickyTop) {
//$sticky.addClass('fixed').removeClass('abs');
} else {
//$sticky.addClass('abs');
}
} else if (scroll > stickyToTop) {
$sticky.addClass('stuck');
} else if (scroll < stickyToTop) {
$sticky.removeClass('stuck');
}
});
and I have two sticky elements see image attached but when I scroll to the first section it adds a class "stuck" on the second section, how can I make that only on that section jquery is triggered and not affect the second/other section unless scrolled on
Here is My FIDDLE
Because $sticky in your case is a jQuery collection with two elements in it you have to use .each() loop to check each element separately. Then you probably don't need $stickyTo, because you have to check for each 'sticky' element's own .parent(). Something like this:
var $sticky = $('.grid-container .sticky'),
$(window).on('scroll', function() {
var scroll = $(window).scrollTop()
$sticky.each(function(){
const $this = $(this)
const stickyTop = $this.offset().top,
const stickyBottom = stickyTop + $sticky.outerHeight();
const $stickyTo = $this.parent()
const stickyToTop = $stickyTo.offset().top,
const stickyToBottom = stickyToTop + $stickyTo.outerHeight();
if (stickyBottom >= stickyToBottom) {
if (scroll < stickyTop) {
//$sticky.addClass('fixed').removeClass('abs');
} else {
//$sticky.addClass('abs');
}
} else if (scroll > stickyToTop) {
$sticky.addClass('stuck');
} else if (scroll < stickyToTop) {
$sticky.removeClass('stuck');
}
})
});
Please note though, this function is not really optimized. It would be better to use native javascript during the scroll. Or even better check native CSS position: sticky.
I got an issue, where I have an dynamic header that gets bigger when scrolling up and smaller when scrolling down and therefore needs to change scrollTop offsets.
So i've been looking around and tried with my no existent java skills with no success.
This jquery code:
$(document).on('click', 'a[href^="#"]', function(e) {
var id = $(this).attr('href');
var $id = $(id);
if ($id.length === 0) {
return;
}
e.preventDefault();
// top position relative to the document
var pos = $(id).offset().top-500; // move this one
$('body, html').animate({scrollTop: pos});
});
var iScrollPos = 0;
$(window).scroll(function () {
var iCurScrollPos = $(this).scrollTop();
if (iCurScrollPos > iScrollPos) {
var pos = $(id).offset().top-500; //here when scrolling down
} else {
var pos = $(id).offset().top-100; // Here when scrolling up
}
iScrollPos = iCurScrollPos;
});
I made a JS fiddle to show what I'm trying to achieve: https://jsfiddle.net/zq9y7nge/1/
So, Is it possible to change offset depending on scrolling up and down?
I have a survey page divided into sections. As the user scrolls, each section's header sticks to the top of the screen until the next section is reached. I was able to do it for the first and second section but I am not sure how to do it for the third one. There must be a better way to do this.
Here is my code and a jsfiddle
Thank you
var s = $("#block2 .question-title-block");
var pos = s.position();
$(window).scroll(function() {
var windowpos = $(window).scrollTop();
if ($(this).scrollTop() > 404) {
$('#block1 .question-title-block').addClass("sticky");
if (windowpos >= pos.top) {
$('#block2 .question-title-block').addClass("sticky");
$('#block1 .question-title-block').removeClass("sticky");
}
else{
$('#block2 .question-title-block').removeClass("sticky");
}
}
else{
$('#block1 .question-title-block').removeClass("sticky");
$('#block2 .question-title-block').removeClass("sticky");
}
})
If you want it to be applied to as many elements as you want, don't use them individually, use their class. Here is what you can do:
var titleBlocks = $(".question-title-block");
$(window).scroll(function() {
var windowpos = $(window).scrollTop();
titleBlocks.each(function(){
$(this).toggleClass('sticky', $(this).parent().offset().top <= windowpos);
});
});
JS Fiddle Demo
try this (allows for any number of question blocks):
var containers = $('.question-block-container');
$(window).scroll(function () {
var windowpos = $(window).scrollTop();
containers.each(function () {
var container = $(this),
title = container.find('.question-title'),
contOffsetTop = container.offset().top,
conOffsetBottom = contOffsetTop + container.outerHeight() + 60; // 60 is margin bottom
if (windowpos >= contOffsetTop && windowpos <= conOffsetBottom) {
if (!title.hasClass("sticky")) {
title.addClass("sticky");
}
} else if (title.hasClass("sticky")) {
title.removeClass("sticky");
}
});
});
Example
I'd like to add a class to an element when a user first scrolls away from the top of the page. If the user then scrolls back up and hits the top of the page I'd like that class removed.
Use of jQuery in the solution is fine.
try
$(window).scroll(function() {
$("id or class").removeClass("active");
var scroll = $(window).scrollTop();
if (scroll <= 500) {
$("#one").addClass("active");
}
else if (scroll <= 1000) {
$("#tow").addClass("active");
}
else {
$("#three").addClass("active");
}
}
So here is the solution you're looking for. Just customize it with your div tags.
$(document).ready(function () {
$(window).scroll(function(){
// get the height of #wrap
var h = $('#top').height();
var y = $(window).scrollTop();
if( y > (h*.25) ){
$("#sidef").fadeIn(1100);
} else {
$('#sidef').fadeOut(75);
}
});
});
var notAdded = true;
$(window).scroll(function(){
if( $(this).scrollTop() == 0){
$(elem).removeClass('classname');
notAdded = true;
}
else if(notAdded){
$(elem).addClass('classname');
notAdded = false;
}
});