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Prevent BODY from scrolling when a modal is opened in angular application

I want my body to stop scrolling to top when I am trying to open popup modals. I am using both angular material and ng-bootstrap popup modals.
I've tried the piece of CSS code below, but the issue is still there, please help.
body.modal-open {
overflow: hidden;
position: fixed;
}

From what I read here here the position of the modal is set to default at the top. To completely remove the scrolling, use that to position the modal down. If you just want to be at the same position after the modal close, you can use this which I used from the comments: here
openModal() {
// Remember the current scroll position
let pos = (document.documentElement.scrollTop || document.body.scrollTop);
this.bsModalRef = this.modalService.show(ModalComponent);
this.modalHideSubscription = this.modalService.onHide.subscribe(() => {
//Return back to the position before opening modal
window.scrollTo(0,pos);
this.modalHideSubscription.unsubscribe();
});
}

How to prevent body from scrolling with push-side menu

I am trying to properly implement a push-side menu plugin (Responsive Menu) into a wordpress theme. Based on SO #Congrim answer, I've managed to achieve a way to lock the body at scroll when push-menu is open (with all the elements including the header fixed) except the interactive links class=edge-ils edge-ils-with-scroll edge-ils-light which will still go Up at push-menu open.
I've saved this sequence into congrim.js file, I've enqueued the script into the theme in functions.php file:
function lockScroll() {
if ($('body').hasClass('lock-scroll')) {
$('body').removeClass('lock-scroll');
}
else {
$('body').addClass('lock-scroll');
}
}
/* I've implemented `onclick="lockScroll();"` in button element,
* using this sequence in the same congrim.js file:
*/
$(document).ready(function() {
$('#responsive-menu-pro-button').click(function() {
lockScroll();
});
});
Removing the jQuery wrap will not give any error in browser console (tested in Chrome) may be still a bad approach to wrapp the code like this in wordpress (?)
In these conditions, unfortunately, overflow: hidden; doesn't apply, at push-side menu open, I can't use this class in CSS file/section:
.lock-scroll {
overflow: hidden;
}
The code will allow me to use only
.lock-scroll {
position: fixed;
}
The question:
Is there any possibility to force the code to implement overflow: hidden;* OR any other a workaround in order to have the interactive links class=edge-ils edge-ils-with-scroll edge-ils-light not going up at push-side menu open, to remain fixed at the position the viewer is clicked before opening the menu?
Please focus on the interactive links issue only, the rest of the scene is fine (header and the logo are in place like it should be, the background pictures are acting like it should as well).
LE: *overflow: hidden; it looks like will produce an unwanted body shifting effect at menu open/close, during the show/hide scrollbar, which is not happening in this stage.
LE2: congrim.js file has been replaced with body-lock.min.js by Outsource WordPress, please see the solution below.
Website testpage here.

Please check the solution given below.
Step 1: Add this CSS .scroll-lock{position:fixed !important;}.
Step 2: Add this JS.
$(document).ready(function() {
var windowTop = 0;
var menuOpen = 0;
var offsetContainerList = 0;
$('#responsive-menu-pro-button').click(function() {
var offsetScrollList = $('.edge-ils-item-link:first').offset().top;
if ($('html').hasClass('scroll-lock')) {
$('#responsive-menu-pro-container').one("webkitTransitionEnd otransitionend oTransitionEnd msTransitionEnd transitionend",
function(event) {
if (menuOpen==0) {
menuOpen = 1;
$('html').removeClass('scroll-lock');
$('.edge-ils-content-table').css('top', eval(offsetContainerList)-40+'px'); //change image container top position
$('html').scrollTop(windowTop); //scroll to original position
}
else {
menuOpen = 0;
}
});
}
else {
windowTop = $(window).scrollTop();
offsetContainerList = $('.edge-ils-content-table').offset().top;
$('html').addClass('scroll-lock');
$('.edge-ils-content-table').css('top', -offsetScrollList + 'px'); //change image container top position
}
});
});
That's it!

Please add the below code in your custom js file .
jQuery('#responsive-menu-pro-button').click(function(){
var menu_active = jQuery(this).hasClass('is-active');
if(menu_active){
jQuery('body').css('position','fixed');
}else{
jQuery('body').css('position','static');
}
});
I hope it helps you.
Thanks

Your scroll isn't a natural navigator-based scroll, you have a JS somewhere swapping classes to emulate a scroll (edge-appeared,edge-up,edge-down).
On the push-side menu opening, these classes are reset, overflow-hidden won't change that.
You need to find which JavaScript is swapping those classes and prevent it from doing so, I'd be glad to be of further help but you have so many JS files that it would take quite some time to go through all of these. If you succeed in making a Minimal, Complete, and Verifiable example please post it here.

How to have collapsible slideshow collapsed by default rather than sliding up?

I would like the slideshow to be collapsed by default. Right now when going to this page http://dev-caal.gotpantheon.com/membership we can see the slideshows for a split second and it then slides up. I would like it to be collapsed by default.
This is the js code:
$(document).ready(function(){
$('.jcarousel-clip').slideUp();
$(".jcarousel-prev, .jcarousel-next").hide();
$('.updown3').click(function() {
$('.jcarousel-clip ').slideToggle(300, function() {
$('.updown3').toggleClass('arrow-up');
$(".jcarousel-prev, .jcarousel-next").toggle();
return false;
});
});});

Render it off the page, collapse it, then inject it into the area you would like
or you can try doing element.hide().slideUp(function(){this.show();});

You can add a display: none to .jcarousel in your css file and only show it afterwards.

Twitter Bootstrap and Snap.js

I'm trying to integrate jakiestfu's Snap.js with Twitter Bootstrap.
I've got something that functions (I can get the content to slide, or open a drawer via a click event). However, I'm at the limit of my CSS skills for the final problem: The drawer content is always visible regardless of the state of the drawer.
JSFiddle example
While I could hard-code the visibility of the drawer element on document load and do something on the open/close click event, that doesn't do anything for the drag capability that Snap.js has.
addEvent(document.getElementById('open-left'), 'click', function () {
// Muck with visibility in here
// Added code sample because StackOverflow wants it with a fiddle...
if (snapper.state().state == "left") {
snapper.close();
} else {
snapper.open('left');
}});

You need to setup a background color for your content:
#content{
background: white;
}
Working fiddle: http://jsfiddle.net/basarat/ygm3L/

Drop down interface from top of page using javascript

Quite simply, I want to know how I can do this 'http://www.lido-troon.co.uk/'.
Where it says 'Reserve a table'. This trigger allows a drop down interface to animate as if from above.
I'm not interested in the booking system in there, just the functionality.
I thought it could be done using anchors and smooth scroll, but that would mean the booking form was always there.

I will give you a code that will center this div on the top of the screen on every screen and will slide the div down from the top onLoad:
HTML:
<div id="ID_NAME">Your Content</div>
JQuery:
jQuery.fn.center = function () {
this.css("position","absolute");
this.css("top","-100px");
this.css("left", (($(window).width() - this.outerWidth()) / 2) + $(window).scrollLeft() + "px");return this;
}
$(document).ready(function(){
$('#ID_NAME').center().delay(300).animate({'top' : '0px'});
});
Hope this helped

Create the content and then show it using JQuery:
http://api.jquery.com/show/

You can have the top div with your booking system content hidden with jQuery's hide() than on .click() of the button (a tag), have it slideDown()
Example:
$(document).ready(function() {
$('booking_div').hide();
$('booking_a').click(function() {
$('booking_div').slideDown();
});
});

You can use javascript, Jquery. that have many UI effect. It's good and easy to use. You can learning it from document. e.g. http://www.webdesignersblog.net/coding/20-advanced-jquery-effects/ http://www.1stwebdesigner.com/css/38-jquery-and-css-drop-down-multi-level-menu-solutions/

Yes you can,
create div at the top of your page with the style="display: none;" or set class with the css from style attribute. Then attach event click to your link and animate change.
JavaScript
$('#your_link_button').click(function()
{
$("#container").slideToggle('slow');
});
CSS
.hidden { display: none; }
HTML
<body>
<div id="container" class="hidden">your content</div>
...