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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).

Modal/Popup Changing Start Position if Scrolling Prior to Click

Good morning everyone. I have a novice JS question that I need help clearing up. First off I am an extreme beginner and self taught so forgive any ignorance.
I am building a new website for a business and one of the pages has a grid of products for customers. Each product has a button which creates a modal to give more information about the product. I am using a JS I found online to have DIFFERENT Modals inside some of these other modals. If you click the modal in question (star fish or sea horse) after scrolling the page first, the modals appear further down and cut off by the screen.
example: https://my.duda.co/preview/27d7a4cc?device=desktop&pageId=30782523
I know the author of the JS included a var to reposition the modal if the user had scrolled but it is not working in my favor or there is something more I need to do and don't have the knowledge for it.
I also know the code is sloppy and probably redundant in some places, I am not an expert. My JSFiddle: https://jsfiddle.net/shnt7vwu
<script>
var $html = $(document.documentElement);
var $modal = $('.modal-container');
function showModal() {
$html.css('overflow', 'hidden');
$modal.show().css('overflow', 'auto');
}
function hideModal() {
$html.css('overflow', 'visible');
$modal.show().css('overflow','visible')
}
$('.modal-btn').on('click', showModal);
$('.modal-close').on('click', hideModal);
</script>
<script>
var scrollTop = '';
var newHeight = '100';
$(window).bind('scroll', function() {
scrollTop = $( window ).scrollTop();
newHeight = scrollTop + 100;
});
$('.popup-trigger').click(function(e) {
e.stopPropagation();
if(jQuery(window).width() < 767) {
$(this).after( $(this).nextAll('.popup:first') );
$(this).nextAll('.popup:first').show().addClass
('popup-mobile').css('top', 0);
$('html, body').animate({
scrollTop: $(this).nextAll('.popup:first').offset().top
}, 500);
} else {
$('.popup').hide();
$(this).nextAll('.popup:first').removeClass('popup-mobile').css
('top', newHeight).toggle();
};
});
$('html').click(function() {
$('.popup').hide();
});
$('.popup-btn-close').click(function(e){
$(this).parent().hide();
});
$('.popup').click(function(e){
e.stopPropagation();
});
</script>

You can place your whole 'div body grid' stuff inside a div with overflow-y enabled, then have your modals with vh:100 hidden outside
Just disable all the modals, div property until the correct user action is taken.
This way you can avoid calculations which may break between platforms and in edge cases.

how to drag element automatically jquery ui

I'm using jquery UI draggable. I do some works in drag function. for example I scale the dragging element according to it's position. I want to drag elements automatically to certain (x, y) (something like jquery animate({left:x, top:y}, 1000)); but I want to trigger drag function and scale element when is animating. how can I do this?

I suggest another approach to do that.
Use an external function to do the scale effect, and call it from both events (drag and animate):
var $myDraggable = $('#draggable').draggable({
drag: function( event, ui ) {
scale(ui.offset.left, ui.offset.top);
}
});
$('button').on('click', function(){
$myDraggable.animate(
{ left:100, top:100 },
{
duration: 1000,
progress: function(draggable){
scale(draggable.elem.offsetLeft, draggable.elem.offsetTop);
}
});
});
function scale(left, top){
//your scaling logic here
console.log("scaling", left, top);
}
See this example: FIDDLE

https://jsfiddle.net/moongod101/8gdvz9jL/
PS:This code offer a button toggle function
$(function(){
$button = $('button')
$box = $('.box')
$click = 0
$button.click(function(){
if($click !=0){
$click ++
$box.removeClass('active')
}else{
$click --
$box.addClass('active')
}
});
});

Accordion Jquery and page height in ajax call

ok so I'm calling in a page via ajax and animating it's height which is working wonderfully, next I have a accordion like function to toggle the visibility of an element and then additionally adjust the height of the containing element which does not work.
Why?
function accordionfaq(){
$('.question_all').on('click', function(event) {
event.preventDefault();
/* Act on the event */
var newHeight = $('.faq').height(); //new height
$(this).children('.answer').toggle('slow', function(){
$('#loadplace').delay(200).animate({
height:newHeight
}).fadeIn();
});
});
}
jsfiddle with complete code and error:
fiddle

Ok the problem here was that i was defining the height before the toggle event... I am dumb at times...:
fixed code here:
function accordionfaq(){
$('.question_all').on('click', function(event) {
event.preventDefault();
/* Act on the event */
$(this).children('.answer').toggle('slow', function(){
var newHeight = $('.faq').height(); //THIS NEEDS TO go in here!!! not outside...
$('#loadplace').delay(200).animate({
height:newHeight
}).fadeIn();
});
});
}

Make div open with your mouse and not click

I have make this: This In the right you see a red button. When you click on the red button. The content screen with the text is coming. But i have a question of this. Can i make this with a other animation. If you hold your mouse. Then you can slide open. With your mouse button to left. Then the content box open. Do you understand it? I hope you can help me.
You can see the code on jsfiddle. And you can change it there. I hope you can help me. I am a starting javascripter. And how And have no idea how I can make this.

To implement dragging, you can make use of mousedown/mouseup/mousemove like this: http://jsfiddle.net/pimvdb/25y4K/8/.
$(function () {
"use strict";
var box = $(".what-is-delicious"),
button = $(".what-is-delicious > a");
var mouseDown = false,
grabbed = 0,
start = -303;
button.mousedown(function(e) {
mouseDown = true;
$('*').bind('selectstart', false); // prevent selections when dragging
grabbed = e.pageX; // save where you grabbed
$("body").append('<div class="background-overlay"></div>');
});
$('body').mouseup(function() {
mouseDown = false;
$('*').unbind('selectstart', false); // allow selections again
$(".background-overlay").remove();
start = parseInt(box.css('right'), 10); // save start for next time
// (parseInt to remove 'px')
}).mousemove(function (e) {
if(mouseDown) { // only if you are dragging
// set right to grabbed - pageX (difference) + start 'right' when started
// dragging. And if you drag too far, set it to 0.
box.css("right", Math.min(grabbed - e.pageX + start, 0));
}
});
});

Here is an updated fiddle. Basically I just did a couple of things:
Changed the handler from "click" to "mouseenter"
Added a "mouseleave" handler that does the opposite thing
Put the handlers on the "what-is-delicious" container instead of the <a>
The code:
$(function () {
"use strict"
var box = $(".what-is-delicious"),
button = $(".what-is-delicious > a");
box.mouseenter(function (e) {
e.preventDefault();
if ($(button).hasClass("open")) {
} else {
$("body").append('<div class="background-overlay"></div>');
button.addClass("open");
box.animate({ right: "0"}, 750);
}
}).mouseleave(function (e) {
e.preventDefault();
if ($(button).hasClass("open")) {
$("body").find('div.background-overlay').remove();
button.removeClass("open");
box.animate({ right: -303}, 750);
} else {
}
});
});
The "preventDefault()" calls aren't really necessary anymore but I left them there.

I would assume you are toggling the Style.Display of the DIV currently in an OnClick() event.
The same code can be called from a Hover() or MouseOver()