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Event on scrolling up or down

I wanna detect when the user scrolls. I saw there are some questions about this but those answers didn't help me.
Here is my code:
var up = document.getElementById('up');
var down = document.getElementById('down');
function onScroll() {
if (view.scrollTop > 0) {
console.log("up");
}
if (view.scrollTop < 0) {
console.log("down");
}
}
var view = document.getElementById('container');
view.addEventListener("wheel", onScroll);
EDIT: "scroll" instead "wheel" isn't working for me... I must have the "wheel". When I make:
if (view.scrolltop <=0) {
console.log("down");
}
that I get in my console "down" but it appears when I scrolling up too! I have my page in 100% of screen and I have no scrollbars (and I don't want to have).
EDIT2: Here is the code that solved my problem!
window.addEventListener('wheel', function (e) {
if (e.deltaY < 0) {
console.log("scrolling up");
}
if (e.deltaY > 0) {
console.log("scrolling down");
}
});

you can use the
window.onscroll
to get the scrolling event, then just use
.scrollTop
to determine your offset from the top of page or an element.
window.onscroll = function() { scrollFunction() };
scrollFunction() {
//code to check if it is scrolling up or down
}
Hopefully this was a helpful start.

I did this with the jquery method
var last = 0;
$(window).scroll(function(event){
var Pos = $(this).scrollTop();
if (Pos > last ){
// down
} else {
// up
}
last = Pos;
});

Supporting #Belmin Bedak's comment.
Use .scroll instead of .wheel:
var up = document.getElementById('up');
var down = document.getElementById('down');
function onScroll() {
if (view.scrollTop > 0) {
alert("up");
}
if (view.scrollTop <= 0) {
alert("down");
}
}
var view = document.getElementById('container');
view.addEventListener("scroll", onScroll);
div {
border: 1px solid black;
width: 200px;
height: 100px;
overflow: scroll;
}
<div id='container'>a<br>
b<br>
c<br>
d<br>
e<br>
f<br>
g<br>
h<br>
i<br>
k<br>
l<br>
</div>

JavaScript - Hide an element when another element is fully inside the viewport

I want to hide .isi-jumo-link when .indication is fully visible in the viewport. Currently it only disappears once .indication is at the top of the viewport.
User needs to scroll from the top and once .indication is fully in view then .isi-jump-link will disappear.
$(window).on('scroll', function () {
if ($(this).scrollTop() >= $('.indication').offset().top) {
$('.isi-jump-link').hide();
}
else {
$('.isi-jump-link').show();
}
});
Just to note... using a fixed scrollTop in my case will not work.

You could check if the both the top and the bottom of your indication is within the viewport:
$(window).on('scroll', function () {
var bottomIsVisible = $(this).scrollTop() + $(this).height() >= $('.indication').offset().top + $('.indication').height();
var topIsVisible = var topIsVisible = $(this).scrollTop() <= $('.indication').offset().top;
if (bottomIsVisible && topIsVisible) {
$('.isi-jump-link').hide();
}
else {
$('.isi-jump-link').show();
}
});

You need to add the height of the .indication <div> also to the equation:
$(window).on('scroll', function () {
if ($(this).scrollTop() >= ($('.indication').offset().top + $('.indication).height())) {
$('.isi-jump-link').hide();
}
else {
$('.isi-jump-link').show();
}
});

jQuery change active class from a to li

We use some jQuery to make our navigation sticky from some point on the page and to add an active class to sections on the page. Currently the active class is added to the a class inside the li. But I want to add this to the li instead of the a href.
How can I achieve this?
Code:
<script>
$j(window).scroll(function(){
var sticky = $j('.menu-header-product'),
scroll = $j(window).scrollTop();
var elementOffset=jQuery("#productnav").offset();
if (scroll >= elementOffset.top - 57) sticky.addClass('sticky');
else sticky.removeClass('sticky');
});
$j(window).scroll(function(){
var sticky = $j('.content'),
scroll = $j(window).scrollTop();
var elementOffset=jQuery("#productnav").offset();
if (scroll >= elementOffset.top - 57) sticky.addClass('sticky');
else sticky.removeClass('sticky');
});
$j(document).ready(function () {
$j(document).on("scroll", onScroll);
$j('a[href^="#"]').on('click', function (e) {
e.preventDefault();
$j(document).off("scroll");
$j('li').each(function () {
$j(this).parent().removeClass('active');
})
$j(this).parent().addClass('active');
var target = this.hash;
$jtarget = $j(target);
$j('html, body').stop().animate({
'scrollTop': $jtarget.offset().top - 120 /**just subtract the height of the fixed html part */
}, 500, 'swing', function () {
window.location.hash = target;
$j(document).on("scroll", onScroll);
});
});
});
function onScroll(event){
var scrollPosition = $j(document).scrollTop();
$j('nav li').each(function () {
var currentLink = $j(this);
var refElement = $j(currentLink.attr("href"));
if (refElement.position().top - 125 <= scrollPosition && refElement.position().top - 125 + refElement.height() > scrollPosition) {
$j('nav ul li a').parent().removeClass("active");
currentLink.parent().addClass("active");
}
else{
currentLink.parent().removeClass("active");
}
});
}
</script>

You can use jQuery's parent selector. So
$j(this).addClass('active');
becomes
$j(this).parent().addClass('active');
You would also need to change the selector $j('a') to $j('li'). I would recommend filtering to only lis in your navigation, i.e. $j('nav li'). Finally, you'd have to update the onScroll event similarly.

Pop up text after scrolling certain distances is not working

I'm trying to get text to pop up at a fixed location at different y-scroll intervals however, I can't seem to chain the scripts correctly. It seems to skip the first action of displaying the first message.
Code: http://jsfiddle.net/k8bnd/
var startY = 1500;
var stopY = 2000;
$(window).scroll(function(){
checkY();
});
function checkY()
{
console.log($(window).scrollTop());
if($(window).scrollTop() > startY && $(window).scrollTop() <= stopY)
{
console.log("Show");
$('.titleTwo').show();
}
else
{
console.log("Hide");
$('.titleTwo').hide();
} }
checkY();

Your functions should have different names. Try
var startY1 = 900;
var stopY1 = 1800;
var startY2 = 1801;
var stopY2 = 2500;
$(window).scroll(function(){
checkY();
});
function checkY()
{
console.log($(window).scrollTop());
if($(window).scrollTop() > startY1 && $(window).scrollTop() <= stopY1)
{
console.log("Show");
$('.foxedDiv').show();
}
else
{
console.log("Hide");
$('.foxedDiv').hide();
}
if($(window).scrollTop() > startY2 && $(window).scrollTop() <= stopY2)
{
console.log("Show");
$('.foxedDivved').show();
}
else
{
console.log("Hide");
$('.foxedDivved').hide();
}
}
checkY();
Fixed Fiddle:
http://jsfiddle.net/k8bnd/1/

This is happening because you have overwritten the previous values/functions. To make this more dynamic you can add data-* attributes to each message element specifying which positions they are valid for. And then in the scroll event check each element's position data, if the window is within that range show it, otherwise hide it.
HTML
<!-- Changed the classes both elements had to foxedDiv
so that we can select them as a group and loop over them -->
<div class="foxedDiv" data-position="900,1800">
MESSAGE 1
</div>
<div class="foxedDiv" data-position="1801,2500">
MESSAGE 2
</div>
JS
//Note you do not need to make an anonymous
//function just to do the call for checkY
//just pass the function
$(window).scroll(checkY);
function checkY(){
//save this value so we dont have to call the function everytime
var top = $(window).scrollTop();
console.log(top);
$(".foxedDiv").each(function(){
var positionData = $(this).data("position").split(",");
if(top > positionData[0] && top <= positionData[1]){
console.log("Show");
$(this).show();
} else {
console.log("Hide");
$(this).hide();
}
});
}
checkY();
JSFiddle Demo

Prevent scrolling jquery script from running twice

I'm new to jquery and have put together the following code to make a DIV appear after a set scroll-down amount. If scrolling back up, the DIV disappears. Optionally, once the DIV has appeared, there is a link to close it. This all works as intended, apart from that I only want the script to run once. At the moment if I scroll back up, the yellow box appears again. How can I ensure the box stays closed? As another option, could I integrate cookies or localStorage?
Many thanks! Russ.
Javascript:
$(function () {
var target = $(".box");
if ($(window).scrollTop() > 30) {
target.hide();
}
$(window).scroll(function () {
var pos = $(window).scrollTop();
if (pos > 30) {
target.stop(true, true).fadeIn('slow');
} else {
target.stop(true, true).fadeOut('slow');
}
});
$('a.close').click(function () {
$($(this).attr('href')).slideUp();
return false;
});
});
Here is the jsfiddle link to my code: jsfiddle link

You can remove the class to ensure the box stays enclosed with removeClass(). Or directly $(".box").remove() after your animation.
You can store this choice with cookie but if the client deletes his cookies, it's lost.

You can remove event scroll from window and for localStorage do something like that:
$(function () {
var target = $(".box");
if ($(window).scrollTop() > 30) {
target.hide();
}
$(window).scroll(function () {
var pos = $(window).scrollTop();
if (pos > 30) {
target.stop(true, true).fadeIn('slow');
} else {
target.stop(true, true).fadeOut('slow');
}
if(localStorage['noNotification'] == 'true'){
$(window).off('scroll');
}
});
$('a.close').click(function () {
$($(this).attr('href')).slideUp();
$(window).off('scroll');
localStorage['noNotification'] = 'true';
return false;
});
});

try this http://jsfiddle.net/AbwXu/4/
var notdisplayed=true;
$(function(){
var target = $(".box");
if($(window).scrollTop() > 30){
target.hide();
}
$(window).scroll(function(){
var pos = $(window).scrollTop();
if(pos > 30 && notdisplayed){
target.stop(true, true).fadeIn('slow');
} else {
target.stop(true, true).fadeOut('slow');
notdisplayed=false;
}
});
$('a.close').click(function() {
$($(this).attr('href')).slideUp();
notdisplayed=false;
return false;
});