mmarienko/modals.js

## modals.js
new class Modals {

   constructor() {
      this.init();
      this.addListenersOpen();
      this.addListenersClose();
      this.addListenerHash();
   }

   init() {
      const modal = document.querySelector(`[data-modal="${window.location.hash}"]`);

      if (window.location.hash && modal) {
         modal.classList.add('active');
         this._hideScroll();
      } else {
         document.querySelectorAll(`[data-modal]`).forEach(modal => {
            modal.classList.remove('active');
         });
      }
   }

   addListenersOpen() {
      document.querySelectorAll('a[data-modal-open]').forEach(trigger => {
         trigger.addEventListener('click', this.openModal.bind(this));
      });
   }

   addListenersClose() {
      document.querySelectorAll('[data-modal-close]').forEach(trigger => {
         trigger.addEventListener('click', this.closeModal.bind(this));
      });
   }

   addListenerHash() {
      window.addEventListener('hashchange', this.init.bind(this));
   }

   openModal(event) {
      event.preventDefault();

      const trigger = event.target.closest('[data-modal-open]');
      const modal = document.querySelector(`[data-modal="${trigger.hash}"]`);
      if (modal) {
         modal.classList.add('active');

         this._hideScroll();
      } else {
         console.error(`The modal window by id '${id}' not found!`);
      }

      window.location.hash = trigger.hash;
      sessionStorage.setItem("last-url", event?.oldURL);
   }

   closeModal(event) {
      event.preventDefault();

      const modal = event.target.closest('[data-modal]');

      if (modal) {
         modal.classList.remove('active');

         this._visibleScroll();

         const lastUrl = sessionStorage.getItem("last-url");

         if (lastUrl.indexOf('#') == -1) {
            history.pushState("", document.title, window.location.pathname + window.location.search);
         } else {
            const lastHash = lastUrl.substr(lastUrl.indexOf('#'));
            window.location.hash = lastHash;
         }

      } else {
         console.error(`The modal window by id '${id}' not found!`);
      }
   }

   _hideScroll() {
      const scrollWidth = window.innerWidth - document.body.offsetWidth;

      if (scrollWidth) {
         document.querySelectorAll('[data-modal-fixed]').forEach(element => {
            element.style.paddingRight = `${scrollWidth}px`;
         });
         document.body.style.paddingRight = `${scrollWidth}px`;
      }

      document.body.style.overflow = 'hidden';
   }

   _visibleScroll() {
      document.querySelectorAll('[data-modal-fixed]').forEach(element => {
         element.style.paddingRight = '0';
      });

      document.body.style.paddingRight = '0';
      document.body.style.overflow = 'visible';
   }
};

## ~example.html
<html>
   <body>

      <header data-modal-fixed> <!-- if menu is position: fixed -->
         <nav aria-label="navigation">
            <ul>
               <li>Home</li>
               <li>News</li>
               <li>About</li>
            <ul>
         </nav>
      </header>

      <main>
         <a href="#modal-1" data-modal-open>Open modal window</a>
      </main>

      <div class="modal" data-modal="#modal-1">
         <div data-modal-close class="modal__area"></div>
         <div class="modal__body">
           <div class="modal__content">
             <button data-modal-close class="modal__close" aria-label="Close modal window"> ✖ </button>
             Content
           </div>
         </div>
      </div>

   </body>
</html>

## ~example.scss
.modal {
   position: fixed;
   width: 100%;
   height: 100%;

   background-color: rgba(#000, 0.7);

   top: 0;
   left: 0;
   opacity: 0;
   visibility: hidden;
   overflow-y: auto;
   overflow-x: hidden;

   z-index: 100;

   transition: all 0.5s ease-in-out;

   &.active {

      opacity: 1;
      visibility: visible;

      .modal__content {
         opacity: 1;
         transform: translate(0, 0);
      }
   }

   &__area {
      position: absolute;
      width: 100%;
      height: 100%;
      top: 0;
      left: 0;
   }

   &__body {
      width: 100%;
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      padding: 40px 20px;
   }

   &__content {
      width: 100%;
      max-width: 1000px;
      background: #fff;
      margin: 0 auto;

      transition: all 0.3s ease-in-out;

      opacity: 0;
      transform: translate(0px, -100%);

      padding: 20px 15px;
   }

   &__close {
      position: absolute;
      right: 10px;
      top: 10px;

      z-index: 101;
   }
}

## ~readme.md

      
    Raw
  

              ~readme.md
            
          
    This is plugin which makes work with layout your project easier.

Anything you need is set needed data-attributes.

data-modal-open - link for open modal (necessarily to set a unique identificator in href).
data-modal-close - button for close modal.
data-modal - unique identificator.
data-modal-fixed - needed for fixed menu and the same blocks which depended by scrollbar.
	new class Modals {

	constructor() {
	this.init();
	this.addListenersOpen();
	this.addListenersClose();
	this.addListenerHash();
	}

	init() {
	const modal = document.querySelector(`[data-modal="${window.location.hash}"]`);

	if (window.location.hash && modal) {
	modal.classList.add('active');
	this._hideScroll();
	} else {
	document.querySelectorAll(`[data-modal]`).forEach(modal => {
	modal.classList.remove('active');
	});
	}
	}

	addListenersOpen() {
	document.querySelectorAll('a[data-modal-open]').forEach(trigger => {
	trigger.addEventListener('click', this.openModal.bind(this));
	});
	}

	addListenersClose() {
	document.querySelectorAll('[data-modal-close]').forEach(trigger => {
	trigger.addEventListener('click', this.closeModal.bind(this));
	});
	}

	addListenerHash() {
	window.addEventListener('hashchange', this.init.bind(this));
	}

	openModal(event) {
	event.preventDefault();

	const trigger = event.target.closest('[data-modal-open]');
	const modal = document.querySelector(`[data-modal="${trigger.hash}"]`);
	if (modal) {
	modal.classList.add('active');

	this._hideScroll();
	} else {
	console.error(`The modal window by id '${id}' not found!`);
	}

	window.location.hash = trigger.hash;
	sessionStorage.setItem("last-url", event?.oldURL);
	}

	closeModal(event) {
	event.preventDefault();

	const modal = event.target.closest('[data-modal]');

	if (modal) {
	modal.classList.remove('active');

	this._visibleScroll();

	const lastUrl = sessionStorage.getItem("last-url");

	if (lastUrl.indexOf('#') == -1) {
	history.pushState("", document.title, window.location.pathname + window.location.search);
	} else {
	const lastHash = lastUrl.substr(lastUrl.indexOf('#'));
	window.location.hash = lastHash;
	}

	} else {
	console.error(`The modal window by id '${id}' not found!`);
	}
	}

	_hideScroll() {
	const scrollWidth = window.innerWidth - document.body.offsetWidth;

	if (scrollWidth) {
	document.querySelectorAll('[data-modal-fixed]').forEach(element => {
	element.style.paddingRight = `${scrollWidth}px`;
	});
	document.body.style.paddingRight = `${scrollWidth}px`;
	}

	document.body.style.overflow = 'hidden';
	}

	_visibleScroll() {
	document.querySelectorAll('[data-modal-fixed]').forEach(element => {
	element.style.paddingRight = '0';
	});

	document.body.style.paddingRight = '0';
	document.body.style.overflow = 'visible';
	}
	};
	<html>
	<body>

	<header data-modal-fixed> <!-- if menu is position: fixed -->
	<nav aria-label="navigation">
	<ul>
	<li>Home</li>
	<li>News</li>
	<li>About</li>
	<ul>
	</nav>
	</header>

	<main>
	<a href="#modal-1" data-modal-open>Open modal window</a>
	</main>

	<div class="modal" data-modal="#modal-1">
	<div data-modal-close class="modal__area"></div>
	<div class="modal__body">
	<div class="modal__content">
	<button data-modal-close class="modal__close" aria-label="Close modal window"> ✖ </button>
	Content
	</div>
	</div>
	</div>

	</body>
	</html>
	.modal {
	position: fixed;
	width: 100%;
	height: 100%;

	background-color: rgba(#000, 0.7);

	top: 0;
	left: 0;
	opacity: 0;
	visibility: hidden;
	overflow-y: auto;
	overflow-x: hidden;

	z-index: 100;

	transition: all 0.5s ease-in-out;

	&.active {

	opacity: 1;
	visibility: visible;

	.modal__content {
	opacity: 1;
	transform: translate(0, 0);
	}
	}

	&__area {
	position: absolute;
	width: 100%;
	height: 100%;
	top: 0;
	left: 0;
	}

	&__body {
	width: 100%;
	min-height: 100vh;
	display: flex;
	align-items: center;
	justify-content: center;
	flex-direction: column;
	padding: 40px 20px;
	}

	&__content {
	width: 100%;
	max-width: 1000px;
	background: #fff;
	margin: 0 auto;

	transition: all 0.3s ease-in-out;

	opacity: 0;
	transform: translate(0px, -100%);

	padding: 20px 15px;
	}

	&__close {
	position: absolute;
	right: 10px;
	top: 10px;

	z-index: 101;
	}
	}