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Remove transparency on menu drop down Javascript

I've been trying to implement a feature that removes the transparency of the dropdown menu on my website so that it is actually readable for visitors.
The code I am currently using, which removes transparency on scroll but not on drop down is:
$(document).ready(function(){
var stoptransparency = 100; // when to stop the transparent menu
var lastScrollTop = 0, delta = 5;
$(this).scrollTop(0);
$(window).on('scroll load resize', function() {
var position = $(this).scrollTop();
if(position > stoptransparency) {
$('#transmenu').removeClass('transparency');
} else {
$('#transmenu').addClass('transparency');
}
lastScrollTop = position;
});
$('#transmenu .dropdown').on('show.bs.dropdown', function() {
$(this).find('.dropdown-menu').first().stop(true, true).slideDown(300);
});
$('#transmenu .dropdown').on('hide.bs.dropdown', function() {
$(this).find('.dropdown-menu').first().stop(true, true).slideUp(300);
});
});
I tried changing it to this (and variations of this) but can't seem to get it to work:
$(document).ready(function(){
var stoptransparency = 100; // when to stop the transparent menu
var lastScrollTop = 0, delta = 5;
$(this).scrollTop(0);
$(window).on('scroll load resize', function() {
var position = $(this).scrollTop();
if(position > stoptransparency) {
$('#transmenu').removeClass('transparency');
} else {
$('#transmenu').addClass('transparency');
}
lastScrollTop = position;
});
$('#transmenu .dropdown').on('show.bs.dropdown', function() {
$(this).find('.dropdown-menu').first().stop(true, true).slideDown(300);
$('#transmenu').removeClass('transparency');
});
$('#transmenu .dropdown').on('hide.bs.dropdown', function() {
$(this).find('.dropdown-menu').first().stop(true, true).slideUp(300);
$('#transmenu').addClass('transparency');
});
});
Any help would be greatly appreciated!
Thanks!

Without the html that this is hooking into it's a bit difficult to answer your question.
But given the fact that scrolling gets the job done, the only element I can see that could be preventing the functionality you want is that your selector to add show event handler is either selecting nothing in particular or an element in the DOM that is not the bootstrap dropdown element that triggers 'show.bs.dropdown', which is my reasoning for the first statement.
You can try the following debug code to verify:
// Should log to console with 'selected' if selector works alternatively 'not selected'
console.log($('#transmenu .dropdown').length > 0 ? 'selected' : 'not selected');
// Log to console when show event triggered
$('#transmenu .dropdown').on('show.bs.dropdown', function() {
console.log('triggered');
});
Hope that helps you find a solution. Happy coding!

see the documentation at http://api.jquery.com/on/ and it should become obvious why your fancy named events are never being triggered (without defining any event namespace in the first place).
$('#transmenu .dropdown')
.on('show', function() {})
.on('hide', function() {});
the DOM selector also might be #transmenu.dropdown instead of #transmenu .dropdown (depending if id and class attributes are present on the DOM node to select - or if one selects the parent node by id and there is/are nested node/s with a class attribute present).

Animate on scroll function mess up on using touch countrols of mobile view

Animation on scroll function is working fine on desktop view but it mess up the scrolling and scroll to random sections when I switch to mobile view and uses touch to scroll the screen. This is my animate on scroll function :
$(window).scroll(function() {
$('.skillbar').each(function(i){
if($(window).scrollTop() + $(window).height() > $(this).offset().top ){
jQuery(this).find('.skillbar-bar').animate({
width:jQuery(this).attr('data-percent')
},6000);
}
});
});
If I use the windows on scroll function, it mess up the mobile view. Please help to solve this issue so that animate on scroll can work on both mobile view with touch scroll and desktop view without messing the scroll.
For more Information these are the other scroll events:
(function($) {
"use strict"; // Start of use strict
// jQuery for page scrolling feature - requires jQuery Easing plugin
$('a.page-scroll').bind('click', function(event) {
var $anchor = $(this);
$('html, body').stop().animate({
scrollTop: ($($anchor.attr('href')).offset().top - 54)
}, 1250, 'easeInOutExpo');
event.preventDefault();
});
// Highlight the top nav as scrolling occurs
$('body').scrollspy({
target: '#mainNav',
offset: 80
});
// Closes the Responsive Menu on Menu Item Click
$('#navbarResponsive>ul>li>a').click(function() {
$('#navbarResponsive').collapse('hide');
});
// jQuery to collapse the navbar on scroll
$(window).scroll(function() {
if ($("#mainNav").offset().top > 100) {
$("#mainNav").addClass("navbar-shrink");
} else {
$("#mainNav").removeClass("navbar-shrink");
}
});
})(jQuery); // End of use strict

EDIT
Since this is the same function for both events...
Maybe calling it on the same handler and use an or to trigger only once will do the trick.
$(window).on("touchmove scroll", function(e) {
// Do the function on ONLY ONE of the two event.
if(e.type=="touchmove" || e.type=="scroll"){
$('.skillbar').each(function(i){
if($(window).scrollTop() + $(window).height() > $(this).offset().top ){
jQuery(this).find('.skillbar-bar').not(".triggered").addClass("triggered").animate({
width:jQuery(this).attr('data-percent')
},6000);
}
});
}
});
EDIT
I've added a subtility using a triggered class.
.not(".triggered").addClass("triggered")
One the first iteration of the .each() function, none of the skillbar-bar has the trigered class.
So let's add it! Then trigger the animation.
On the second and all next iterations, the triggered class removes all skillbar-bar which already have the triggered class out of the collection.
This prevent the animate() function to be fired more than once on each skillbar-bar.
I think this was the issue.
Let me know if it works !

How to leave Menu bar from the middle of the page on top while scrolling?

I wanted to do something like this mentioned here, so I used the following jsfidlle (that works pretty fine) to create my own http://jsfiddle.net/a2q7zk0m/1/, but with the custom menu included. Now it doesn't work, I guess it's probably because of the error in javascript:
$(document).ready(function() {
$(window).scroll(function(e) {
$el = document.getElementById('temp');
if ($(this).scrollTop() > 100) {
$el.addClass("fixedNav");
} else {
$el.removeClass("fixedNav");
}
});
});
that does not recognize the ID of the div and request the class from css, but unfortunately I cannot use class attribute here. Could you help me guys with solving that issue? Thanks!

Replace this line:
$el = document.getElementById('temp');
with this:
$el = $('#temp');
JSFiddle
Or wrap the $el into jQuery object:
$el = document.getElementById('temp');
// ...
$($el).removeClass("fixedNav");
JSFiddle
Also, You should move $el declaration outside of the $(window).scroll method (so that the element isn't searched in DOM while scrolling)
$(document).ready(function(){
var $el = $('#temp');
$(window).scroll(function (e){
if ($(this).scrollTop() >= 100 && !$el.hasClass("fixedNav")) {
$el.addClass("fixedNav");
}else if($(this).scrollTop() < 100 && $el.hasClass("fixedNav")){
$el.removeClass("fixedNav");
}
});
});

jQuery: Hide element after scrollTop value is passed

I want to hide a div once my slider passes a scrollTop() value of 200px. I've looked at this article and tried using it as a template for what I want. I have the following code, but its not hiding the element. Live site
function removeArrow() {
$(window).scroll(function() {
if($('.portfolio-sliders:first-child').scrollTop() > 100) { //use `this`, not `document`
$('.scrl-dwn').css({
'display': 'none'
});
}
});
}
UPDATE
I've updated by code:
function removeArrow() {
$(window).scroll(function() {
var slider = $('.portfolio-sliders:first-child').position.top;
if(slider >= 10) {
$('.scrl-dwn').hide();
}
});
}
which should work, but its not...

Position is a function, not a property. You need to call the function with ():
var slider = $('.portfolio-sliders:first-child').position().top;

Replace your whole removeArrow function with this code.
(If you open your live site, and run this in the console, you can see it's working).
The scroll event never fired, so I handled theese mousewheel events instead.
$(window).bind('DOMMouseScroll mousewheel', function() {
var div = $(".portfolio-sliders:first-child"),
top = div.position().top,
display = top < 400 ? 'none' : '';
$('.scrl-dwn').css({ 'display': display });
});

Use This :
$(window).scroll(function(){
if ($(window).scrollTop() > 660)
{
$(".Left-Section").css("position", "fixed");
$(".Center-Content").css("margin-top", "0");
$(".Right-Nav img").css("transform", "rotate(360deg)");
}
;)

jQuery Highlight Nav links on scroll not working

I'm extremely new to JavaScript so I apologize in advance. I'm trying to create a one page html document for a school project using a list of links for navigation that change when the anchor is scrolled to. I've tried various different methods found on Jfiddle and through stackoverflow. This is the method I am trying now: http://jsfiddle.net/m2zQE/
var topRange = 200, // measure from the top of the viewport to X pixels down
edgeMargin = 20, // margin above the top or margin from the end of the page
animationTime = 1200, // time in milliseconds
contentTop = [];
$(document).ready(function () {
// Stop animated scroll if the user does something
$('html,body').bind('scroll mousedown DOMMouseScroll mousewheel keyup', function (e) {
if (e.which > 0 || e.type == 'mousedown' || e.type == 'mousewheel') {
$('html,body').stop();
}
});
// Set up content an array of locations
$('#nav').find('a').each(function () {
contentTop.push($($(this).attr('href')).offset().top);
});
// Animate menu scroll to content
$('#nav').find('a').click(function () {
var sel = this,
newTop = Math.min(contentTop[$('#nav a').index($(this))], $(document).height() - $(window).height()); // get content top or top position if at the document bottom
$('html,body').stop().animate({
'scrollTop': newTop
}, animationTime, function () {
window.location.hash = $(sel).attr('href');
});
return false;
});
// adjust side menu
$(window).scroll(function () {
var winTop = $(window).scrollTop(),
bodyHt = $(document).height(),
vpHt = $(window).height() + edgeMargin; // viewport height + margin
$.each(contentTop, function (i, loc) {
if ((loc > winTop - edgeMargin && (loc < winTop + topRange || (winTop + vpHt) >= bodyHt))) {
$('#nav li')
.removeClass('selected')
.eq(i).addClass('selected');
}
});
});
});
I'm still not having any luck. I've already searched to see if I could debug the problem and have tried changing the order of the code as well as the order of calling jquery.
Here is a link to the site: https://googledrive.com/host/0BwvPQbnPrz_LMlZDeGlFY2Yydmc/index.html
I used html5boilerplate as a starting point.Thank you in advance.

Don't have much time to look into your code, but when I input the line
Math.min(contentTop[$('#nav a').index($(this))], $(document).height() - $(window).height())
into the console of developer tools, it return NaN.
So I guess the problem is you don't have your scrollTop correctly set.
I suggest you give each element an id and try:
$('html, body').animate({
scrollTop: $("#elementID").offset().top
}, 2000);
or if you insist not giving id,
$('html, body').animate({
scrollTop: $("#container-fulid:nth-child(2)").offset().top
}, 2000);
but notice that this is not working on all browser as the nth-child selector is a CSS3 selector.
Or, if you know how to correctly use other's work, you may try to use bootstrap 3.0, where there is already a function named scrollspy included, which do exactly the thing you are doing.
http://getbootstrap.com/javascript/#scrollspy