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Pen ID
Unlock Campus Themeforest adv

 

Code


Fullscreen slides with GSAP

Let's go to the next slide.

It is so easy to navigate through slides

You can go back to previous slide or go to the next slide.

Use mouse wheel

No, really. Try to scroll up and down with the mouse wheel to switch between slides.

... Or use keyboard arrows

You go to previous and next slide, using up and down keyboard arrows.

CSS
body, div, p {
    margin: 0;
    padding: 0;
}

body {
    font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;
    font-weight: 300;
    letter-spacing: 0.0625em;
}

a {
    text-decoration: none;
}

nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
}

nav ul {
    list-style: none;
    text-align: center;
    margin-top: 30px;
}

nav ul li {
    display: inline-block;
    margin-right: 20px;
}

nav ul li:last-child {
    margin-right: 0;
}

#back-to-tutorial {
    margin-left: 100px;
}

nav a {
    position: relative;
    top: 0;
    padding: 10px 20px;
    font-weight: normal;
    font-size: 20px;
    text-align: center;
    border-radius: 4px;
    background-color: #FFFFFF;
    color: #83C78E;
    -webkit-box-shadow: none;
    -moz-box-shadow: none;
    box-shadow: none;
}

nav a.active {
    top: -4px;
    background-color: #69C773;
    color: #FFFFFF;
    -webkit-box-shadow: 0 4px 0 0 #51a65f;
    -moz-box-shadow: 0 4px 0 0 #51a65f;
    box-shadow: 0 4px 0 0 #51a65f;
}

.slides-container {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 10;
}

.slide {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.slide .centered {
    width: 60%;
    margin: 200px auto 0;
}

.slide .centered h1 {
    text-align: center;
}

.slide .centered p {
    text-align: center;
    margin-top: 20px;
    font-size: 20px;
}

#slide-1 {
    background-color: #FFFFFF;
}

#slide-2 {
    background-color: #45959b;
}

#slide-3 {
    background-color: #778899;
}

#slide-4 {
    color: #FFFFFF;
    background-color: #291F37;
}

.go-prev, .go-next {
    cursor: pointer;
    font-weight: bold;
    text-decoration: underline;
}
JS
//First the variables our app is going to use need to be declared

	//References to DOM elements
	var $window = $(window);
	var $document = $(document);
	//Only links that starts with #
	var $navButtons = $("nav a").filter("[href^=#]");
	var $navGoPrev = $(".go-prev");
	var $navGoNext = $(".go-next");
	var $slidesContainer = $(".slides-container");
	var $slides = $(".slide");
	var $currentSlide = $slides.first();

	//Animating flag - is our app animating
	var isAnimating = false;

	//The height of the window
	var pageHeight = $window.innerHeight();

	//Key codes for up and down arrows on keyboard. We'll be using this to navigate change slides using the keyboard
	var keyCodes = {
		UP  : 38,
		DOWN: 40
	}

	//Going to the first slide
	goToSlide($currentSlide);


	/*
	*   Adding event listeners
	* */

	$window.on("resize", onResize).resize();
	$window.on("mousewheel DOMMouseScroll", onMouseWheel);
	$document.on("keydown", onKeyDown);
	$navButtons.on("click", onNavButtonClick);
	$navGoPrev.on("click", goToPrevSlide);
	$navGoNext.on("click", goToNextSlide);

	/*
	*   Internal functions
	* */


	/*
	*   When a button is clicked - first get the button href, and then slide to the container, if there's such a container
	* */
	function onNavButtonClick(event)
	{
		//The clicked button
		var $button = $(this);

		//The slide the button points to
		var $slide = $($button.attr("href"));

		//If the slide exists, we go to it
		if($slide.length)
		{
			goToSlide($slide);
			event.preventDefault();
		}
	}

	/*
	*   Getting the pressed key. Only if it's up or down arrow, we go to prev or next slide and prevent default behaviour
	*   This way, if there's text input, the user is still able to fill it
	* */
	function onKeyDown(event)
	{

		var PRESSED_KEY = event.keyCode;

		if(PRESSED_KEY == keyCodes.UP)
		{
			goToPrevSlide();
			event.preventDefault();
		}
		else if(PRESSED_KEY == keyCodes.DOWN)
		{
			goToNextSlide();
			event.preventDefault();
		}

	}

	/*
	*   When user scrolls with the mouse, we have to change slides
	* */
	function onMouseWheel(event)
	{
		//Normalize event wheel delta
		var delta = event.originalEvent.wheelDelta / 30 || -event.originalEvent.detail;

		//If the user scrolled up, it goes to previous slide, otherwise - to next slide
		if(delta < -1)
		{
			goToNextSlide();
		}
		else if(delta > 1)
		{
			goToPrevSlide();
		}

		event.preventDefault();
	}

	/*
	*   If there's a previous slide, slide to it
	* */
	function goToPrevSlide()
	{
		if($currentSlide.prev().length)
		{
			goToSlide($currentSlide.prev());
		}
	}

	/*
	*   If there's a next slide, slide to it
	* */
	function goToNextSlide()
	{
		if($currentSlide.next().length)
		{
			goToSlide($currentSlide.next());
		}
	}

	/*
	*   Actual transition between slides
	* */
	function goToSlide($slide)
	{
		//If the slides are not changing and there's such a slide
		if(!isAnimating && $slide.length)
		{
			//setting animating flag to true
			isAnimating = true;
			$currentSlide = $slide;

			//Sliding to current slide
			TweenLite.to($slidesContainer, 1, {scrollTo: {y: pageHeight * $currentSlide.index() }, onComplete: onSlideChangeEnd, onCompleteScope: this});

			//Animating menu items
			TweenLite.to($navButtons.filter(".active"), 0.5, {className: "-=active"});

			TweenLite.to($navButtons.filter("[href=#" + $currentSlide.attr("id") + "]"), 0.5, {className: "+=active"});

		}
	}

	/*
	*   Once the sliding is finished, we need to restore "isAnimating" flag.
	*   You can also do other things in this function, such as changing page title
	* */
	function onSlideChangeEnd()
	{
		isAnimating = false;
	}

	/*
	*   When user resize it's browser we need to know the new height, so we can properly align the current slide
	* */
	function onResize(event)
	{

		//This will give us the new height of the window
		var newPageHeight = $window.innerHeight();

		/*
		*   If the new height is different from the old height ( the browser is resized vertically ), the slides are resized
		* */
		if(pageHeight !== newPageHeight)
		{
			pageHeight = newPageHeight;

			//This can be done via CSS only, but fails into some old browsers, so I prefer to set height via JS
			TweenLite.set([$slidesContainer, $slides], {height: pageHeight + "px"});

			//The current slide should be always on the top
			TweenLite.set($slidesContainer, {scrollTo: {y: pageHeight * $currentSlide.index() }});
		}

	}

Description

Just a quick snippet
Term
Mon, 11/27/2017 - 21:28

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