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Code that shows sticky button on scroll down & hide on scroll up

I want to repurpose this code from a video guide on website headers that hides when you scroll down and shows when you scroll up
<script>
"use strict";
OB_ready(OB_doWhenReady);
function OB_doWhenReady() {
// localize everything
var ooohBoi = window.ooohBoi || {};
// local scope variables
ooohBoi.prev_scroll_pos = window.scrollY || document.body.scrollTop;
ooohBoi.cur_scroll_pos;
ooohBoi.scroll_direction = 'init';
ooohBoi.prev_scroll_direction = 0;
ooohBoi.header = document.querySelector('#show-hide-header'); // header ID
ooohBoi.header_pos = {
top: ooohBoi.header.offsetTop,
left: ooohBoi.header.offsetLeft,
};
ooohBoi.header_height = OB_outerHeight(ooohBoi.header);
// show-hide header with ease/transition
ooohBoi.header.style.transition = 'all 0.3s ease';
// update header height on window resize
ooohBoi.updateHeaderHeight = function() {
ooohBoi.header_height = OB_outerHeight(ooohBoi.header);
}
// listen "scroll" event and decide what to do
ooohBoi.checkScroll = function() {
ooohBoi.cur_scroll_pos = window.scrollY || document.body.scrollTop;
if (ooohBoi.cur_scroll_pos > ooohBoi.prev_scroll_pos) ooohBoi.scroll_direction = 'down';
else if (ooohBoi.cur_scroll_pos < ooohBoi.prev_scroll_pos) ooohBoi.scroll_direction = 'up';
if (ooohBoi.scroll_direction !== ooohBoi.prev_scroll_direction) ooohBoi.toggleHeader(ooohBoi.scroll_direction, ooohBoi.cur_scroll_pos);
ooohBoi.prev_scroll_pos = ooohBoi.cur_scroll_pos;
}
// add or remove class based on the scrolling direction
ooohBoi.toggleHeader = function(scroll_direction, scroll_current) {
if (scroll_direction === 'down' && scroll_current > ooohBoi.header_height) {
OB_addClass(ooohBoi.header, 'im-hidden'); // for styling
ooohBoi.header.style.top = -1 * ooohBoi.header_height + "px";
ooohBoi.prev_scroll_direction = scroll_direction;
} else if (scroll_direction === 'up') {
OB_removeClass(ooohBoi.header, 'im-hidden');
ooohBoi.header.style.top = ooohBoi.header_pos.top + "px";
ooohBoi.prev_scroll_direction = scroll_direction;
}
}
// listen "scroll" and "resize" window events
window.addEventListener('scroll', ooohBoi.checkScroll);
window.addEventListener('resize', ooohBoi.updateHeaderHeight);
}
function OB_outerHeight(el) {
var height = el.offsetHeight;
var style = getComputedStyle(el);
height += parseInt(style.marginTop) + parseInt(style.marginBottom);
return height;
}
function OB_addClass(el, className) {
if (el.classList) el.classList.add(className);
else {
var current = el.className,
found = false;
var all = current.split(' ');
for (var i = 0; i < all.length, !found; i++) found = all[i] === className;
if (!found) {
if (current === '') el.className = className;
else el.className += ' ' + className;
}
}
}
function OB_removeClass(el, className) {
if (el.classList) el.classList.remove(className);
else el.className = el.className.replace(new RegExp('(^|\\b)' + className.split(' ').join('|') + '(\\b|$)', 'gi'), ' ');
}
function OB_ready(fn) {
if (document.readyState != 'loading') fn();
else if (document.addEventListener) document.addEventListener('DOMContentLoaded', fn);
else {
document.attachEvent('onreadystatechange', function() {
if (document.readyState != 'loading') fn();
});
}
}
</script>
What I want to do is to repurpose this code for a sticky button at the bottom of screen (image)
How do I edit the code so that:
Instead of showing on scroll up and hiding on scroll down -> It shows on scroll down and hides on scroll up
Instead of sliding in and out from the top of the screen -> The button slides in and out from the bottom of the screen.
Thank you!

How should I scroll my page on mobile devices?

I have a slider that scrolls when user uses scroll wheel, but on mobile phone it doesn't work. How i should solve this? I used jQuery scroll() but it is not working. Help please.
The slider is pretty much simple, and totaly fine on computer, but it is not working on my phone
What should i use? What method?
$(document).ready(function() {
var curPage = 1;
var numOfPages = $(".skw-page").length;
var animTime = 1000;
var scrolling = false;
var pgPrefix = ".skw-page-";
function pagination() {
scrolling = true;
$(pgPrefix + curPage).removeClass("inactive").addClass("active");
$(pgPrefix + (curPage - 1)).addClass("inactive");
$(pgPrefix + (curPage + 1)).removeClass("active");
setTimeout(function() {
scrolling = false;
}, animTime);
};
function navigateUp() {
if (curPage === 1) return;
curPage--;
pagination();
};
function navigateDown() {
if (curPage === numOfPages) return;
curPage++;
pagination();
};
$(document).on("mousewheel DOMMouseScroll", function(e) {
if (scrolling) return;
if (e.originalEvent.wheelDelta > 0 || e.originalEvent.detail < 0) {
navigateUp();
} else {
navigateDown();
}
});
$(document).on("keydown", function(e) {
if (scrolling) return;
if (e.which === 38) {
navigateUp();
} else if (e.which === 40) {
navigateDown();
}
});
});

jQuery change page and show tab on menu entry click

var tab = null;
var menuSelector = null;
jQuery(function ($) {
console.log('test');
//howtos tab
function changeMenuSelector() {
if ($( document ).width() > 967) {
menuSelector = 'top-menu-nav';
} else {
menuSelector = 'mobile_menu';
}
}
changeMenuSelector();
$( window ).resize(function() {
changeMenuSelector();
});
$('#'+menuSelector+' a[href*="howtos"]').on('click', function(event){
var e = event;
var $ = jQuery;
setTimeout(function () {
e.preventDefault();
console.log('pluto');
window.localStorage.setItem('tab', 'et_pb_tab_0');
if(window.location.pathname.indexOf('blog-posts') === -1)
{
window.location.href='http://www.davidepugliese.com/blog-posts/';
} else {
tab = localStorage.getItem('tab');
$("li."+tab+">a")[0].click();
window.localStorage.removeItem('tab');
}
},1000);});
$('#'+menuSelector +' a[href*="projects"]').on('click', function(e){
e.preventDefault();
console.log('pluto');
localStorage.setItem('tab', 'et_pb_tab_1');
if(window.location.pathname.indexOf('blog-posts') === -1)
{
window.location.href='http://www.davidepugliese.com/blog-posts/';
} else {
tab = localStorage.getItem('tab');
$("li."+tab+">a")[0].click();
localStorage.removeItem('tab');
}
});
$('#'+menuSelector +' a[href*="reviews"]').on('click', function(e){
e.preventDefault();
console.log('pluto');
localStorage.setItem('tab', 'et_pb_tab_2');
if(window.location.pathname.indexOf('blog-posts') === -1)
{
window.location.href='http://www.davidepugliese.com/blog-posts/';
} else {
tab = localStorage.getItem('tab');
$("li."+tab+">a")[0].click();
localStorage.removeItem('tab');
}
});
$('#'+menuSelector +' a[href*="elearning"]').on('click', function(e){
e.preventDefault();
console.log('pluto');
localStorage.setItem('tab', 'et_pb_tab_3');
if(window.location.pathname.indexOf('blog-posts') === -1)
{
window.location.href='http://www.davidepugliese.com/blog-posts/';
} else {
tab = localStorage.getItem('tab');
$("li."+tab+">a")[0].click();
localStorage.removeItem('tab');
}
});
$('#'+menuSelector +' a[href*="others"]').on('click', function(e){
e.preventDefault();
console.log('pluto');
localStorage.setItem('tab', 'et_pb_tab_4');
if(window.location.pathname.indexOf('blog-posts') === -1)
{
window.location.href='http://www.davidepugliese.com/blog-posts/';
} else {
tab = localStorage.getItem('tab');
$("li."+tab+">a")[0].click();
localStorage.removeItem('tab');
}
});
if (!!localStorage.getItem('tab')) {
tab = localStorage.getItem('tab');
console.log(tab);
setTimeout(function(){$("li."+tab+">a")[0].click();}, 1)
$("html, body").animate({ scrollTop: $('.et_pb_module.et_pb_tabs.et_pb_tabs_0').offset().top },
1000);
localStorage.removeItem('tab');
}
});
I have created a script to show tabs in Divi when you click on a menu entry. Divi does not use ids and hrefs for this, so I had to use a script.
The problem that I am facing is that this script that I made does not work with Divi's mobile menu.
I checked if menuSelector changed properly and if changeMenuSelector got executed as expected.
Furthermore, $('#'+menuSelector+' a[href*="howtos"]').length returns 1 in console and if I run $('#'+menuSelector+' a[href*="howtos"]')[0] in console I obtain the expected DOM element whehter I have the browser window sized for mobile or for desktop devices.
I also tried using setTimeout in case the issue was that it needed some time to accomplish an earlier action without any luck.
Therefore, is there anyone that could tell me why this does not work when the website is running in mobile mode?

I solved the issue by refactoring the code like this:
jQuery(function ($) {
console.log('test');
var tab = null;
var menuSelector = null;
var guard = false;
function changeMenuSelector() {
if ($(document).width() > 967) {
menuSelector = 'top-menu-nav';
guard = false;
initEventListeners(guard);
} else {
menuSelector = 'mobile_menu';
guard = true;
initEventListeners(guard);
}
}
function initEventListeners(guard) {
var localGuard = null;
if (localGuard != guard) {
var hrefs = ['howtos', 'projects', 'reviews', 'elearning', 'others'];
hrefs.forEach(
function (element, index, array) {
$('#' + menuSelector + ' a[href*="' + element + '"]').off();
console.log(element);
$('#' + menuSelector + ' a[href*="' + element + '"]').on('click', function (e) {
e.preventDefault();
console.log('pluto');
window.localStorage.setItem('tab', 'et_pb_tab_' + index);
if (window.location.pathname.indexOf('blog-posts') === -1) {
window.location.href = 'http://www.davidepugliese.com/blog-posts/';
} else {
tab = localStorage.getItem('tab');
$("li." + tab + ">a")[0].click();
$("html, body").animate({ scrollTop: $('.et_pb_module.et_pb_tabs.et_pb_tabs_0').offset().top },
1000);
window.localStorage.removeItem('tab');
}
});
});
localGuard = guard;
}
}
changeMenuSelector();
initEventListeners();
$(window).resize(function () {
changeMenuSelector();
});
if (!!localStorage.getItem('tab')) {
tab = localStorage.getItem('tab');
console.log(tab);
setTimeout(function(){$("li."+tab+">a")[0].click();}, 1)
$("html, body").animate({ scrollTop: $('.et_pb_module.et_pb_tabs.et_pb_tabs_0').offset().top },
1000);
localStorage.removeItem('tab');
}
});

jQuery plugin that bind mousedown prevent click in client code

I have plugin jQuery-splitter that bind to document.documentElement:
$(document.documentElement).bind('mousedown.splitter touchstart.splitter', function(e) {
if (splitter_id !== null) {
current_splitter = splitters[splitter_id];
$('<div class="splitterMask"></div>').css('cursor', current_splitter.children().eq(1).css('cursor')).insertAfter(current_splitter);
current_splitter.settings.onDragStart(e);
}
}).bind('mouseup.splitter touchend.splitter touchleave.splitter touchcancel.splitter', function(e) {
if (current_splitter) {
$('.splitterMask').remove();
current_splitter.settings.onDragEnd(e);
current_splitter = null;
}
}).bind('mousemove.splitter touchmove.splitter', function(e) {
if (current_splitter !== null) {
var limit = current_splitter.limit;
var offset = current_splitter.offset();
if (current_splitter.orientation == 'vertical') {
var pageX = e.pageX;
if(e.originalEvent && e.originalEvent.changedTouches){
pageX = e.originalEvent.changedTouches[0].pageX;
}
var x = pageX - offset.left;
if (x <= current_splitter.limit) {
x = current_splitter.limit + 1;
} else if (x >= current_splitter.width() - limit) {
x = current_splitter.width() - limit - 1;
}
if (x > current_splitter.limit &&
x < current_splitter.width()-limit) {
current_splitter.position(x, true);
current_splitter.find('.splitter_panel').
trigger('splitter.resize');
//e.preventDefault();
}
} else if (current_splitter.orientation == 'horizontal') {
var pageY = e.pageY;
if(e.originalEvent && e.originalEvent.changedTouches){
pageY = e.originalEvent.changedTouches[0].pageY;
}
var y = pageY-offset.top;
if (y <= current_splitter.limit) {
y = current_splitter.limit + 1;
} else if (y >= current_splitter.height() - limit) {
y = current_splitter.height() - limit - 1;
}
if (y > current_splitter.limit &&
y < current_splitter.height()-limit) {
current_splitter.position(y, true);
current_splitter.find('.splitter_panel').
trigger('splitter.resize');
//e.preventDefault();
}
}
current_splitter.settings.onDrag(e);
}
});
And in user code when I use this code the click don't work when I click on splitter (div between panels) it work when I click on the panel.
var counter = 0;
$(document.documentElement).on('click', function(e) {
console.log('x');
var $target = $(e.target);
if ($target.is('.vsplitter, .hsplitter')) {
if (++counter == 2) {
console.log('double click');
$target.parents('.splitter_panel').eq(0).data('splitter').position(20);
counter = 0;
}
} else {
counter = 0;
}
});
When I comment out the $(document.documentElement).bind('mousedown.splitter touchstart.splitter' code I can double click on the splitter. Anybody have a clue why is this happening?

It was caused by .splitterMask div.

jQuery event.stopPropagation() and event issues

I'm creating a jQuery script that add a pin to a map on click event, the problem is that i need that event to work only on the map not his sons too..
This is my code:
$("div#map").click(function (e) {
$('<div class="pin"></div>').css({
left: a_variable,
top: another_variable
}).appendTo(this);
$("div.pin").click(function (e) { e.stopPropagation(); });
})
Another problem is that under this code i have something like this:
$("div.pin").mousedown(function (e) {
if(e.which == 1) {
console.log("down");
moving = true;
$(this).addClass("moving");
} else if(e.which == 3) {
console.log("right");
}
});
Will this work with pins created after the script load too?
JsFiddle: http://jsfiddle.net/vB2Gb/

I made a number of adjustments to your code:
JSFiddle: http://jsfiddle.net/TrueBlueAussie/vB2Gb/1/
$(function () {
var $map = $("div#map");
$map.click(function (e) {
var $pin = $('<div class="pin"></div>').css({
left: (((e.pageX + 3 - $map.position().left) * 100) / $map.width()) + "%",
top: (((e.pageY - 10 - $map.position().top) * 100) / $map.height()) + "%"
});
$pin.appendTo($map);
})
$map.on('click', "div.pin", function (e) {
e.stopPropagation();
});
var moving = false;
var pin_id;
var pin_left;
var pin_top;
$map.on('mousedown', "div.pin", function (e) {
if (e.which == 1) {
console.log("down");
moving = true;
$(this).addClass("moving");
} else if (e.which == 3) {
console.log("right");
}
});
$map.on('contextmenu', "div.pin", function (e) {
return false;
});
$(document).mousemove(function (e) {
if (moving) {
if (e.pageX <= $map.position().left) {
pin_left = 0;
} else if (e.pageY <= $map.position().top) {
pin_top = 0;
} else {
console.log("moving");
pin_id = 1;
pin_left = (((e.pageX + 3 - $map.position().left) * 100) / $map.width());
pin_top = (((e.pageY - 10 - $map.position().top) * 100) / $map.height());
$(".moving").css("left", pin_left + "%");
$(".moving").css("top", pin_top + "%");
}
}
});
$(document).mouseup(function (e) {
if (moving) {
console.log("up");
moving = false;
$(".moving").removeClass("moving");
dbMovePin(pin_id, pin_left, pin_top);
}
});
});
function dbMovePin(pin_id, pin_left, pin_top) {
$.post(
"mapsave.php", {
action: "move_pin",
id: pin_id,
left: pin_left,
top: pin_top
},
function (data, status) {
//alert("Data: " + data + "\nStatus: " + status);
});
}
This includes using delegated events (with on) for both the mouse down events and the pin click. Sharing a single variable for the map etc

Event Delegation does what i need:
I've changed
$("div.pin").mousedown(function (e) { ... });
with
$("div#map").on("mousedown", "div", function (e) {

Since you are dealing with dynamically added elements, you need to use event delegation.
$("#map").click(function (e) {
$('<div class="pin"></div>').css({
left: a_variable,
top: another_variable
}).appendTo(this);
}).on('click', '.pin', function (e) {
//have a single delegated click handler
e.stopPropagation();
}).on('mousedown', '.pin', function (e) {
//use a delegated handler for mousedown also
if (e.which == 1) {
console.log("down");
moving = true;
$(this).addClass("moving");
} else if (e.which == 3) {
console.log("right");
}
})
Also see
Event binding on dynamically created elements?