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How to display a scrolled navbar when page refresh?

So I got this script :
$(function() {
var header = $(".header-nav");
$el = $(".header_logo a").clone().addClass('cloned');
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 50) {
header.addClass("scrolled");
} else {
header.removeClass("scrolled");
}
if (scroll > 50) {
$el.appendTo(".header-logo");
} else {
$('.cloned').remove();
}
});
});
It makes the navbar fixed on scroll and clone logo and reset it on top page.
But if I refresh page at the middle, navbar isn't displayed cause it displays only on scroll.
Is there a way to fix that please?
Thanks.

As evolutionxbox suggested you should move your code into a function and call it both on scroll and on load like this:
$(function() {
var header = $(".header-nav");
$el = $(".header_logo a").clone().addClass('cloned');
myScroller();
$(window).scroll(function() {
myScroller();
});
function myScroller(){
var scroll = $(window).scrollTop();
if (scroll >= 50) {
header.addClass("scrolled");
} else {
header.removeClass("scrolled");
}
if (scroll > 50) {
$el.appendTo(".header-logo");
} else {
$('.cloned').remove();
}
}
});

How not to execute JavaScript code when the screen has a specific size?

I am using the following to add and remove CSS classes based on the current scroll position:
$(function() {
var header = $(".grid-bar");
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 400) {
header.addClass("move");
} else {
header.removeClass("move");
}
});
});
But I want to disable the addition and removal of the CSS classes on a screen size smaller than 800px.
I have tried wrapping the code in a resize function but after I do so, it stops responding at all:
$(window).resize(function(){
if ($(window).width() => 800){
var header = $(".grid-bar");
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 400) {
header.addClass("move");
} else {
header.removeClass("move");
}
});
}
});

As others have mentioned, you have an improper operator for "greater than or equal to". The following is incorrect:
if ($(window).width() => 800) {
// ^^ this operator is wrong
if ($(window).width() >= 800) {
// ^^ it should be like this
Also, you need to bind and unbind the scroll handler whenever the screen size changes. You will need to keep track of whether or not the scroll handler is bound or not. Here is what that looks like:
const $window = $(window);
const $header = $(".grid-bar");
let isBound = false;
const scrollHandler = function() {
const scroll = $window.scrollTop();
if (scroll >= 400) {
header.addClass("move");
} else {
header.removeClass("move");
}
}
$(window).resize(function(){
if ($window.width() >= 800) {
if (!isBound) {
$window.on('scroll', scrollHandler);
isBound = true;
}
} else if (isBound) {
$window.off('scroll', scrollHandler);
isBound = false;
}
});
$window.trigger('resize');
Here is a fiddle: https://jsfiddle.net/1mru359x/5/

How to make two different functions work on window resize

I want to make a sticky banner, which becomes fixed at top when it is scrolled and unsticks at the end of the page. The document height is dependent upon images, that's why I use window load event. I have the following code:
function saleBanner() {
$(window).bind("load", function() {
// Make sale banner fixed-at-top
var s = $('.sale-container');
var pos = s.offset();
var maxTop = $(document).outerHeight() - 828 - s.outerHeight(); // 828 is the total height of site footer and sign up form
function fixedBanner() {
var currentTop = $(window).scrollTop();
if (currentTop >= pos.top && currentTop < maxTop) {
s.attr("style", ""); //kill absolute positioning
s.addClass('fixed-at-top'); //stick it
} else if (currentTop >= maxTop) {
s.removeClass('fixed-at-top'); //un-stick
s.css({bottom: 0}); //set sticker right above the footer
} else {
s.removeClass('fixed-at-top'); //top of page
}
}
$(window).scroll(fixedBanner);
});
}
saleBanner();
I want to make this function work on window resize as well. So I added the following code:
function resizeBanner() {
var viewportWidth = $(window).width();
if (viewportWidth > 767) {
saleBanner();
}
}
I have one more function resizeWindow for mobile menu, which I also need to work on window resize. So when I put this two functions together, they don't work (although they work on window resize separately):
$(window).resize(function(e) {
resizeWindow(e);
resizeBanner(e);
});
Where is my mistake? How can I make both functions work on window resize?
Update: Here is the whole code for resizeWindow function. It's rather long, but may be it would be helpful for the answer.
// Mobile menu
var MQM = 768;
var viewportWidth = $(window).width();
function navSlide() {
var headerHeight = $('.cd-header').height();
$(window).on('scroll', {previousTop: 0}, function () {
var currentTop = $(window).scrollTop();
//check if user is scrolling up
if (currentTop < this.previousTop ) {
//if scrolling up...
if (currentTop > 0 && $('.cd-header').hasClass('is-fixed')) {
$('.cd-header').addClass('is-visible');
} else {
$('.cd-header').removeClass('is-visible is-fixed');
}
} else {
//if scrolling down...
if(!$('.cd-header').hasClass('menu-is-open')) {
$('.cd-header').removeClass('is-visible');
}
if( currentTop > headerHeight && !$('.cd-header').hasClass('is-fixed')) $('.cd-header').addClass('is-fixed');
}
this.previousTop = currentTop;
});
}
// Primary navigation slide-in effect on load
if(viewportWidth < MQM) {
navSlide();
}
function addOverflow() {
$('html').addClass('overflow-hidden');
$('body').addClass('overflow-hidden');
}
function removeOverflow() {
$('html').removeClass('overflow-hidden');
$('body').removeClass('overflow-hidden');
}
function hideHeader() {
$('.cd-header').removeClass('is-fixed is-visible');
}
function hideMenu() {
$('.cd-header').removeClass('menu-is-open is-fixed is-visible');
$('.cd-menu-icon').removeClass('is-clicked');
}
function resizeWindow() {
var viewportWidth = $(window).width();
$(window).off('scroll'); // unbind scroll event
if (viewportWidth > 767) {
if ($('.cd-primary-nav').hasClass('is-visible')) {
if ($('.algolia__search-content').hasClass('algolia__search-content--active')) {
hideMenu();
$('.search-trigger').addClass('is-clicked');
$('.search-header').addClass('is-fixed');
} else {
hideMenu();
if (!$('.js-algolia__input').is(':focus')) {
$('.cd-primary-nav').removeClass('is-visible').one('webkitTransitionEnd otransitionend oTransitionEnd msTransitionEnd transitionend',function(){
removeOverflow();
});
$('.search-trigger').removeClass('is-clicked');
$('.search-header').removeClass('is-fixed');
} else {
$('.search-trigger').addClass('is-clicked');
$('.search-header').addClass('is-fixed');
}
}
} else {
hideHeader();
}
} else {
navSlide();
if ($('.cd-primary-nav').hasClass('is-visible')) {
$('.cd-header').addClass('menu-is-open');
$('.cd-menu-icon').addClass('is-clicked');
$('.search-trigger').removeClass('is-clicked');
$('.search-header').removeClass('is-fixed');
}
}
}

jQuery animate() doesn't correctly animate height the second time

I have built a toggle that will slide down a div to reveal content. I am not using the normal toggle() function of jQuery because I wanted to show the top 300px of content and then slide to reveal the rest.
Anyways, I have a script setup that animates the height of the container div, which reveals the content inside.
function slideCut() {
var revertHeight = 300;
var finalHeight = 0;
var s = 1000;
$('.cutBottom a').click(function() {
event.stopPropagation();
var p = $(this).parent().parent();
var h = p.css('height', 'auto').height();
var cut = $(this).parent().find('.cutRepeat');
// Fix height
if (finalHeight == 0) {
p.css('height', 'auto');
finalHeight = p.height();
p.height(revertHeight);
}
if ($(this).hasClass('toggled')) {
$(this).removeClass('toggled');
p.animate({height:revertHeight}, {
duration: s
});
cut.fadeIn('fast');
} else {
$(this).addClass('toggled');
p.animate({height:finalHeight}, {
duration: s,
complete: function() {
cut.fadeOut('fast');
}
});
}
return false;
});
}//end
The problem is, the second time it animates the height to the full size (sliding the div to reveal content) it does not animate, it just jumps to the full height. Why is this happening?
Working example: http://jsfiddle.net/6xp2Y/3/

After all that hard work and fiddle being broken, all we had to do was remove one line from your code:
function slideCut() {
var revertHeight = 300;
var finalHeight = 0;
var s = 1000;
$('.cutBottom a').click(function() {
event.stopPropagation();
var p = $(this).parent().parent();
//var h = p.css('height', 'auto').height(); //REMOVE THIS LINE
var cut = $(this).parent().find('.cutRepeat');
// Fix height
if (finalHeight == 0) {
p.css('height', 'auto');
finalHeight = p.height();
p.height(revertHeight);
}
if ($(this).hasClass('toggled')) {
$(this).removeClass('toggled');
p.animate({height:revertHeight}, {
duration: s
});
cut.fadeIn('fast');
} else {
$(this).addClass('toggled');
p.animate({height:finalHeight}, {
duration: s,
complete: function() {
cut.fadeOut('fast');
}
});
}
return false;
});
}//end
slideCut();
Updated your fiddle: http://jsfiddle.net/brandonscript/6xp2Y/5/

Updated answer!
The proplem lies here
if (finalHeight == 0) {
parent.css('height', 'auto');
finalHeight = parent.height();
parent.height(revertHeight);
console.log('finalHeight:'+finalHeight);
}
This is only running at the beginning, because finalHeight is not 0 anymore after first run.
You can fix this by setting finalHeight back to 0 after closing it again, like so
if ($(this).hasClass('toggled')) {
$(this).removeClass('toggled');
parent.animate({height:revertHeight}, {
duration: speed
});
cut.fadeIn('fast');
finalHeight = 0;
} else { [...]

Horizontal jquery scroller using position:absolute; with constant scroll

I've managed to get this far and it works great for solid width divs but can't work out how to manipulate it to work when the width of the div changes.
Question: How do I make this function take into account the different div widths after each 'round'?
var horizontalScroller = function($elem) {
var left = parseInt($elem.css("left"));
var temp = -1 * $('#horizontalScroller li').width();
if(left < temp) {
left = $('#horizontalScroller').width();
$elem.css("left", left);
}
$elem.animate({ left: (left-60) }, 2000, 'linear', function () {
horizontalScroller($(this));
});
}
$(document).ready(function() {
var i = 0;
$("#horizontalScroller li").each(function () {
$(this).css("left", i);
i += $(this).width();
horizontalScroller($(this));
});
});
Working example (with fixed width): http://jsfiddle.net/GL5V3/
Working example (with different widths): http://jsfiddle.net/wm9gt/

Well this was mildly fun, understood how your code works, but before I did that...
I rewritten it to this: (working fiddle)
function horizontalScroller(ulSelector) {
var horizontalSpan=0;
var collection=[];
function animate(index) {
var cur=collection[index];
var left=parseInt(cur.elem.css('left'));
if(left < cur.reboundPos) {
left+=horizontalSpan;
console.log(left);
cur.elem.css('left',left);
}
cur.elem.animate(
{ left: (left-60) },
2000,
'linear',
function () {animate(index)}
);
}
$(ulSelector).find('li').each(function() {
var $this=$(this);
var width=$this.width();
$this.css('left',horizontalSpan);
collection.push({reboundPos: -1 * width, elem: $this});
horizontalSpan+=width;
animate(collection.length-1);
});
console.log(collection);
console.log(horizontalSpan);
}
$(document).ready(function() {
horizontalScroller('#horizontalScroller');
});
Then I went back to your code and did this:
var horizontalSpan = 0;// swapped i for a "global" variable
var horizontalScroller = function($elem) {
var left = parseInt($elem.css("left"));
var temp = -1 * $elem.width();// updated to the correct width
if(left < temp) {// now out of bounds is properly calculated
left += horizontalSpan;// proper "wrapping" with just one addition
$elem.css("left", left);
}
$elem.animate({ left: (left-60) }, 2000, 'linear', function () {
horizontalScroller($(this));
});
}
$(document).ready(function() {
$("#horizontalScroller li").each(function () {
$(this).css("left", horizontalSpan);// horizontalSpan!!!
horizontalSpan += $(this).width();// horizontalSpan!!!
horizontalScroller($(this));
});
});
If you've got questions or want to tweak it a bit. I'd be happy you to help you along. But my hopes are that you will manage on your own.
P.S. My initial comment was rude, you're horizontal scrolling is ok thumbs up (but you were hoping the values for some of those .width() calls to be way different)