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On scroll the active menu does not chaning

I've created a right side menu but when i scrolling down it is not changing the active class to next menu,I've used this code lots of time but this time i'm not getting the result,
$(window).scroll(function() {
var scrollbarLocation = $(this).scrollTop();
scrollLink.each(function() {
var sectionOffset = $(this.hash).offset().top - 70;
if ( sectionOffset <= scrollbarLocation ) {
$('.icons').removeClass('iconactive');
$(this).children('.icons').addClass('iconactive');
}
});
});
DEMO

you need to define scrollLink and you can give some animation effect when you click an anchor link by adding a function like this
$(document).on('click', 'a[href^="#"]', function (event) {
event.preventDefault();
$('html, body').animate({
scrollTop: $($.attr(this, 'href')).offset().top
}, 1000);
});
Demo : http://jsfiddle.net/3xmop98u/

I think you are missing var scrollLink = $('.myanimate'); in your code. Adding this line in your DEMO make the code work.
$(window).scroll(function() {
var scrollbarLocation = $(this).scrollTop();
var scrollLink = $('.myanimate');
scrollLink.each(function() {
var sectionOffset = $(this.hash).offset().top - 70;
if ( sectionOffset <= scrollbarLocation ) {
$('.icons').removeClass('iconactive');
$(this).children('.icons').addClass('iconactive');
}
});
});
$(".myanimate").click(function (){
$('html, body').animate({
scrollTop: $($(this).attr('href')).offset().top
}, 2000);
});

Javascript Error on page, because of loaded jQuery

I wrote some jQuery that checks the location of the person on the page and add some classed.
But when I load the jQuery I see a lot of errors in the browser console.
When scrolling the number of errors increase.
I get the following error:
TypeError: undefined is not an object (evaluating 'refElement.position().top')
Geselecteerd element
How can I solve this?
jQuery:
(function($) {
$(window).scroll(function() {
var sticky = $('.menu-header-product'),
scroll = $(window).scrollTop();
var elementOffset = jQuery("#productnav").offset();
if (scroll >= elementOffset.top - 88) sticky.addClass('sticky');
else sticky.removeClass('sticky');
});
$(window).scroll(function() {
var sticky = $('.content'),
scroll = $(window).scrollTop();
var elementOffset = jQuery("#productnav").offset();
if (scroll >= elementOffset.top - 88) sticky.addClass('sticky');
else sticky.removeClass('sticky');
});
$(document).ready(function() {
$(document).on("scroll", onScroll);
$('a[href^="#"]').on('click', function(e) {
e.preventDefault();
$(document).off("scroll");
$('a').each(function() {
$(this).removeClass('active');
})
$(this).addClass('active');
var target = this.hash;
$target = $(target);
$('html, body').stop().animate({
'scrollTop': $target.offset().top - 88 /**just subtract the height of the fixed html part */
}, 500, 'swing', function() {
window.location.hash = target;
$(document).on("scroll", onScroll);
});
});
});
function onScroll(event) {
var scrollPosition = $(document).scrollTop();
$('nav a').each(function() {
var currentLink = $(this);
var refElement = $(currentLink.attr("href"));
if (refElement.position().top - 88 <= scrollPosition && refElement.position().top - 125 + refElement.height() > scrollPosition) {
$('nav ul li a').removeClass("active");
currentLink.addClass("active");
}
else {
currentLink.removeClass("active");
}
});
}
})(jQuery.noConflict());

You have not written any style for your .active class,
I have just added a color:red to it and it seems to work fine.
Working DEMO: https://jsfiddle.net/pytduk9q/3/
Hope this helps!

Remove class when scrolled to the href atribute

Currently I remove class from the element in 2000
setTimeout(function(){
$('.nav-item a').removeClass('active');
}, 2000);
How can I amend my code to remove class when the 'autoscroll' is finished?
$('.nav-item a, .nav-brand a, .button, .footer2 a').click(function() {
event.preventDefault(); // default action of the event will not be triggered, eg will not change links name
var windowSize = $(window).width();
if (windowSize >= 769) {
$('html, body').animate({
scrollTop: $($(this).attr('href')).offset().top - 51
}, 1500);
}
else if (windowSize <= 768) {
$('html, body').animate({
scrollTop: $($(this).attr('href')).offset().top - 102
}, 1500);
}
return false; });
I guess I should somehow use attribute href, but I am not sure how.

You can do it by defining a complete callback into animate method.
$('.nav-item a, .nav-brand a, .button, .footer2 a').click(function() {
event.preventDefault(); // default action of the event will not be triggered, eg will not change links name
var windowSize = $(window).width();
var scrollY;
if (windowSize >= 769) {
scrollY = $($(this).attr('href')).offset().top - 51;
} else {
scrollY = $($(this).attr('href')).offset().top - 102;
}
$('html, body').animate({
scrollTop: scrollY
}, 1500, function() {
$('.nav-item a').removeClass('active');
});
return false;
});

JQuery Animate takes a final argument complete function, so you should be able to write something like:
$('.nav-item a, .nav-brand a, .button, .footer2 a').click(function() {
event.preventDefault();
var windowSize = $(window).width();
if (windowSize >= 769) {
$('html, body').animate({
scrollTop: $($(this).attr('href')).offset().top - 51
}, 1500, function() {
$('.nav-item a').removeClass('active');
});
} else if (windowSize <= 768) {
$('html, body').animate({
scrollTop: $($(this).attr('href')).offset().top - 102
}, 1500, function() {
$('.nav-item a').removeClass('active');
});
}
return false;
});

Animate scroll between sections - without a plugin

Im trying to create a script that animates the scrolling between section on my page without using a plugin - just pure jquery. But seems that I'm experiencing some issues when I try and scroll my page. Can anyone help me?
Here is my jsFiddle
And my code:
$(document).ready(function() {
$('.main').bind('mousewheel', function(e){
var mHeight=$(document).height()/8;
console.log(mHeight);
if(e.originalEvent.wheelDelta /120 > 0) {
// alert('up');
$('html, body').animate({
scrollTop: mHeight
}, 1000);
}
else{
// alert('down');
$('html body').animate({
scrollTop: -mHeight
}, 1000);
}
});
});

check this
$('body').bind('mousewheel', function (e) {
e.stopPropagation();
e.preventDefault();
var mHeight = $(document).height() / 8;
console.log(mHeight);
if (e.originalEvent.wheelDelta / 120 > 0) {
// alert('up');
$('html, body').stop().animate({
scrollTop: -mHeight
}, 1000);
}
else {
// alert('down');
$('html body').stop().animate({
scrollTop: mHeight
}, 1000);
}
});
Demo
Edit
var index = 1;
$('body').bind('mousewheel', function (e) {
e.stopPropagation();
e.preventDefault();
var mHeight = $(document).height() / 8;
console.log(mHeight);
if (e.originalEvent.wheelDelta / 120 > 0) {
// alert('up');
index--;
mHeight = mHeight * index;
$('html, body').stop().animate({
scrollTop: mHeight
}, 1000);
}
else {
// alert('down');
index++;
mHeight = mHeight * index;
$('html body').stop().animate({
scrollTop: mHeight
}, 1000);
}
});
Updated Fiddle

Scroll to Top and Scroll to Bottom in Jquery

I tried to implement the scroller with top to bottom and bottom to top with jquery. I recently tried with percent.
From the Top to bottom with pixel is seems ok.(Means it works) for the bottom to top is only make scroll not completely finish if i mention percentage as 100
$('#spnTop').on("click",function(){
var percentageToScroll = 100;
var percentage = percentageToScroll/100;
var height = jQuery(document).height();
var documentHeight = $(document).height();
var scroll = $(window).scrollTop();
alert(scroll);
var scrollAmount = Math.round((height) * percentageToScroll/ 100)-scroll;
//alert(point);
alert(scrollAmount);
$('html,body').animate({ scrollTop: scrollAmount }, 'slow', function () {
alert("reached top"); });
});
Here is the fiddle.
For Example:
percentageToScroll is now 100 but the ending of scroll is not completely finish. (from bottom to top)
For top to bottom is 100 then it completely scroll to bottom of the page.
I am not sure how to make it workable.
Thanks.
Vicky

What about this?
$('#spnTop').on("click",function(){
var percentageToScroll = 100;
var percentage = percentageToScroll/100;
var height = $(document).scrollTop();
var scrollAmount = height * (1 - percentage);
alert(scrollAmount);
$('html,body').animate({ scrollTop: scrollAmount }, 'slow', function () {
alert("reached top"); });
});
$('#spnbottom').on("click",function() {
var percentageToScroll = 100;
var height = $(document).innerHeight();
var scrollAmount = height * percentageToScroll/ 100;
alert(scrollAmount);
var overheight = jQuery(document).height() - jQuery(window).height();
//alert(overheight);
jQuery("html, body").animate({scrollTop: scrollAmount}, 900);
});
Fiddle here

As I specified in comment I prepared a Demo
$(document).on("click","#spnTop",function(){
$('html,body').animate({scrollTop: 0}, 1500);
});
$(document).on("click","#spnbottom",function() {
var window_height = $(window).height();
var document_height = $(document).height();
$('html,body').animate({ scrollTop: window_height + document_height },1500);
});
I hope it may help you

jQuery(document).ready(function($){
$('#goToTop').on("click",function(){
$("html, body").animate({ scrollTop: 0 }, 2000);
return false;
});
$('#goToBottom').on("click",function() {
$("html, body").animate({scrollTop: $(document).innerHeight()}, 2000);
return false;
});
});

Now see you need the percentages
See demo here:
http://jsfiddle.net/a3g4d/
$('#spnTop').on("click",function(){
var percentage = 100;
var height = $(document).height();
var remove = +height / +100 * +percentage;
var spaceFromTop = +height - +remove;
$('html,body').animate({ scrollTop: spaceFromTop }, 'slow', function () {});
});

You can also use the span positions if you have top and bottom span always.
$('#spnTop').on("click",function(){
$('html,body').animate({
scrollTop: $("#spnbottom").offset().top
}, 'slow', function () {
alert("reached top");
});
});
http://jsfiddle.net/4qLvC/8/

I hope something like this :) might help you
$('#spnTop').on("click",function(){
$('html,body').animate(
{ scrollTop: 0 },
'slow',
function () {});
});
$('#spnbottom').on("click",function() {
var window_height = $(window).height();
var document_height = $(document).height();
$('html,body').animate(
{ scrollTop: window_height + document_height },
'slow',
function () {});
});
Use this link to try it out : demo

$(function () {
$("#scrollToBottom").click(function () {
$('html, body').animate({ scrollTop: window.screen.height }, 400);
});
$("#scrollToTop").click(function () {
$('html, body').animate({ scrollTop: 0 }, 400);
});
});