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How to hide a div when the position of another div is less than a certain value

I'm trying to hide #back when #mobile-nav is positioned 0vw from the left. Here's what I have at the moment...
$(document).ready(function() {
var position = $("#mobile-nav").css("left", "0vw");
if (position < 0vw) {
$("#back").css("display", "none");
} else {
$("#back").css("display", "block");
}
);
Any idea as to why this isn't returning successfully?
Here's a link to the codepen https://codepen.io/spittman/pen/pBqYON

Try this:
var position = parseInt($("#mobile-nav").css("left"));
if (position <= 0) {
$("#back").css("display", "none");
}
else {
$("#back").css("display", "block");
}

try this
$("ul ul").hide();
$("li").click(function(event) {
$(this).children('ul').toggle();
event.stopPropagation();
});
$("li").click(function() {
$(this).siblings().children().hide();
});
$(".nav-child-trigger").click(function(){
$("#mobile-nav").animate({left: '-=100vw'});
});
$("#back").click(function(){
$("#mobile-nav").animate({left: '+=100vw'});
var position = $("#mobile-nav").position().left;
if (position > 0) {
$("#back").css("display", "none");
}
else {
$("#back").css("display", "block");
}
});
$(document).ready(function(){
});

how to make an animation only 1 time on scroll

This is my code: Fiddle
countEach()
$(window).on('scroll', function(e) {
countEach()
})
function countEach() {
$('.count').each(function() {
if (showOnScreen(this) && $(this).attr('show') != 'false') {
console.log($(this).text())
console.log($(this).attr('show'))
$(this).attr('show', 'false')
numberAnimate(this)
} else if (!showOnScreen(this)) {
$(this).attr('show', 'true')
}
})
}
function showOnScreen(target) {
if ($(window).scrollTop() + $(window).height() >= $(target).offset().top)
return true;
else
return false;
}
function numberAnimate(target) {
var $this = $(target);
jQuery({
Counter: 0
}).animate({
Counter: $this.text()
}, {
duration: 1000,
easing: 'swing',
step: function() {
$this.text(this.Counter.toFixed(1));
}
});
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<span class="count">5.6</span>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<p>Scroll up and then scroll down again</p>
<span class="count">5.6</span>
The problem is, the increasing number animation will run again, if i scroll up and scroll down again. What is the thing that i need to change to stop it? I tried a lot of things, but i am not good at Javascript.

You need to declare a global var as stopNow = 2 so your animation can only run twice and decrement it when animation runs.
var stopNow = 2;
Update the countEach function as follows
function countEach() {
$('.count').each(function() {
//also check stopNow != 0
if (showOnScreen(this) && $(this).attr('show') != 'false' && stopNow != 0) {
console.log($(this).text())
console.log($(this).attr('show'))
$(this).attr('show', 'false')
numberAnimate(this)
stopNow = stopNow - 1; //decrement stopNow
} else if (!showOnScreen(this)) {
$(this).attr('show', 'true')
}
})
}
Here's your updated working fiddle - https://jsfiddle.net/6w8ubh5y/7/

Use a global variable. Set it to false at the beginning. In the scroll event, check it and if it is still false, run the countEach() function then change the variable to true. Like this:
var stop = false;
countEach();
$(window).on('scroll', function(e) {
if(!stop){
countEach();
stop = true;
}
})

Change the event binding code from:
$(window).on('scroll', function(e) {
countEach()
})
to
$(window).on('scroll', countEach);
and change countEach function like this...
function countEach() {
$('.count').each(function() {
...
});
$(window).off('scroll', countEach); // add this line
}

responsive accordions are not working

my custom responsive accordions are not working. Requirement is to have heading and content for the desktop view but if it loads on smaller device will turn to accordions. I have just achieved it. But when I re-size the window it doesn't work well and functionality behaves weird animation and sometime it does't work.
Can anyone please help me to find out what is the problem in my code?
Below are jsBin URL and js code:
URL:
http://jsbin.com/zarak/5/edit
Code:
if($(window).width() < 360){
$('h2').on('click', function() {
var _target = $(this).next('.reponsiveTap');
if(_target.css('display') == 'none'){
_target.slideDown();
$(this).addClass('active');
}else{
_target.slideUp();
$(this).removeClass('active');
}
});
}
else if($(window).width() > 359){
$('h2').on('click', function() {
return false;
});
}
$(window).resize(function(){
if($(window).width() < 360){
$('h2').on('click', function() {
var _target = $(this).next('.reponsiveTap');
if(_target.css('display') == 'none'){
_target.slideDown();
$(this).addClass('active');
}else{
_target.slideUp();
$(this).removeClass('active');
}
});
}
else if($(window).width() > 359){
$('h2').on('click', function() {
return false;
});
}
});
Many thanks,
Mufeed Ahmad

Try this, here's a FIDDLE
$(window).resize(function() {
if($(this).width() < 360) {
$('.reponsiveTap').slideUp(400, 'linear');
$('.in-row h2').on('click', function() {
$('.reponsiveTap').stop().slideUp(400, 'linear').removeClass('active');
$(this).next('.reponsiveTap').stop().slideToggle(400, 'linear').addClass('active');
});
}
else {
$('.reponsiveTap').slideDown(400, 'linear');
$('.in-row h2').off('click');
}
});

Navigating long un-ordered list

I have this long list with overflow: auto to scroll through it, i set it up for keyboard navigation, the problem is that when using the keyboard it doesn't scroll correctly!
check this jsFiddle
$('ul').keydown(function (e) {
if (e.keyCode == 38) { // up
var selected = $(".selected");
$listItems.removeClass("selected");
if (selected.prev().length == 0) {
selected.siblings().last().addClass("selected");
} else {
selected.prev().addClass("selected");
}
}
if (e.keyCode == 40) { // down
var selected = $(".selected");
$listItems.removeClass("selected");
if (selected.next().length == 0) {
selected.siblings().first().addClass("selected");
} else {
selected.next().addClass("selected");
}
}
})
});
$listItems.click(function () {
if ($(this).is('.selected')) {
return true;
} else {
$('li').removeClass('selected');
$(this).addClass('selected');
}
the behavior i'm looking for is the same behavior of the element when scrolling through a long list of elements using the keyboard this plugin SelectBoxIt show's what i'm looking for.

you can use this code instead, i used animate function to navigate inside the div if the list exceed the width of the ul tag :
http://jsfiddle.net/goldendousa/p6243/13/
$('ul').focus(function() {
if ($('ul li').is('.selected')) {
$('ul li').first().removeClass('selected');
} else {
$('ul li').first().addClass('selected');
}
});
$('ul').keydown(function(e) {
if (e.keyCode == 38) { // up
e.preventDefault();
var selected = $(".selected");
$("ul li").removeClass("selected");
if (selected.prev().length == 0) {
selected.siblings().last().addClass("selected");
var selectedTopOffset = selected.siblings().last().offset().top;
$('div').animate({
scrollTop: selectedTopOffset
}, 200);
} else {
selected.prev().addClass("selected");
var selectedTopOffset = $("div").scrollTop() + selected.position().top - $("div").height()/2 + selected.height()/2;
$('div').animate({
scrollTop: selectedTopOffset
}, 200);
}
}
if (e.keyCode == 40) { // down
e.preventDefault();
var selected = $(".selected");
$("ul li").removeClass("selected");
if (selected.next().length == 0) {
selected.siblings().first().addClass("selected");
if (selected.siblings().first().offset().top < 0) {
$('div').animate({
scrollTop: selected.siblings().first().offset().top
}, 200);
}
} else {
selected.next().addClass("selected");
var selectedTopOffset = $("div").scrollTop() + selected.position().top - $("div").height()/2 + selected.height()/2;
$('div').animate({
scrollTop: selectedTopOffset
}, 200);
}
}
});
$('li').click(function() {
if ($(this).is('.selected')) {
return true;
} else {
$('li').removeClass('selected');
$(this).addClass('selected');
}
});

Treating each div as a "page" when scrolling

I have a page that I'm building and I would like to make it that when I scroll (up or down) the page scrolls to the next div (each div is 100% the height of the window). And gets "fixed" there until you scroll again. An example of what I'm trying to accomplish can be seen here:
http://testdays.hondamoto.ch/
You will notice that when you scroll down, it automatically moves you to the next "div".
What I've tried:
Using the jQuery .scroll event combined with:
function updatePosition() {
if(canScroll) {
var pageName;
canScroll = false;
var st = $(window).scrollTop();
if (st > lastScrollTop){
// downscroll code
if(pageNumber < 7) {
pageNumber++;
}
pageName = '#' + getPageToScrollTo().id;
$('body').animate({ scrollTop: $(pageName).offset().top }, 2000, function() {
canScroll = true;
});
} else {
// upscroll code
if(pageNumber > 0) {
pageNumber--;
}
pageName = '#' + getPageToScrollTo().id;
$('body').animate({ scrollTop: $(pageName).offset().top }, 2000, function() {
canScroll = true;
});
}
lastScrollTop = st;
}
}
But the scroll event was getting called when the page was scrolling (animating), AND when the user scrolled. I only need it to be called when the user scrolls.
Then I added:
var throttled = _.throttle(updatePosition, 3000);
$(document).scroll(throttled);
From the Underscore.js library - but it still did the same.
Finally, I browsed here a bit and found:
Call Scroll only when user scrolls, not when animate()
But I was unable to implement that solution. Is there anyone that knows of any libraries or methods to get this working?
EDIT:
Solution based on Basic's answer:
function nextPage() {
canScroll = false;
if(pageNumber < 7) {
pageNumber++;
}
pageName = getPageToScrollTo();
$('html, body').stop().animate({ scrollTop: $(pageName).offset().top }, 1000, function() {
canScroll = true;
});
}
function prevPage() {
canScroll = false;
if(pageNumber > 0) {
pageNumber--;
}
pageName = getPageToScrollTo();
$('html, body').stop().animate({ scrollTop: $(pageName).offset().top }, 1000, function() {
canScroll = true;
});
}
//--Bind mouseWheel
$(window).on(mousewheelevt, function(event) {
event.preventDefault();
if(canScroll){
if(mousewheelevt == "mousewheel") {
if (event.originalEvent.wheelDelta >= 0) {
prevPage();
} else {
nextPage();
}
} else if(mousewheelevt == "DOMMouseScroll") {
if (event.originalEvent.detail >= 0) {
nextPage();
} else {
prevPage();
}
}
}
});

Ok...
The relevant code for the Honda site can be found in http://testdays.hondamoto.ch/js/script_2.js. It seems to be doing some calculations to locate the top of the div then scroll to it. There are handlers for different types of scrolling.
Specifically, the movement is handled by function navigation(target)
the key bits is here...
$('html,body').stop().animate({
scrollTop: $(target).offset().top + newMargin
}, 1000,'easeInOutExpo',function(){
//Lots of "page"-specific stuff
}
});
There are handlers for the scroll types...
$('body').bind('touchstart', function(event) {
//if(currentNav!=3){
// jQuery clones events, but only with a limited number of properties for perf reasons. Need the original event to get 'touches'
var e = event.originalEvent;
scrollStartPos = e.touches[0].pageY;
//}
});
//--Bind mouseWheel
$('*').bind('mousewheel', function(event, delta) {
event.preventDefault();
//trace('class : '+$(this).attr('class') + ' id : '+$(this).attr('id'));
if(!busy && !lockScrollModel && !lockScrollMap){
if(delta<0){
nextPage();
}else{
prevPage();
}
}
});
You'll note that the navigate() function sets a busy flag which is unset when scrolling completes - which is how it suppresses all new scroll events during a scroll. Try changing the direction of scroll while the page is already scrolling and you'll notice user input is being ignored too.