In this article we will take a look at [Vue. With the help of Vue CLI we are able to quickly scaffold new apps with all the lastest Webpack features, without spending hours configuring your Webpack setup.
Here we draw a simple red box to the DOM. Take note the ref tag on the divthis is how we will be referring to the element when introducing GSAP. Vue makes elements with ref tags available via this.
First we import TimelineLite from GSAP, then, when the component is mounted we acquire a reference to our box element via this. We then initialize a GSAP timeline and play the animation. Pretty simple!
Lets transition the red box to a green box, halfway through the first animation. Take note of the additional argument on line 21, here we can tell GSAP to run an animation relative to the completion of the previous. With a basic understanding of those principles we can start building more complex, engaging animations. As we will see in the next example its really just about playing with it until you get it right!
While this may look scary at first, take a second to digest what is actually happening. All it is, is a few CSS transforms queued up sequentially. Additionally, we will make the timeline available to the rest of the component via data.
We now have a solid foundation to start integrating some interactivity. As an example, lets add a button to randomly update the logo in the bubble. With this code in place, we can now use the button to update the element we are animating, while its being animated! We could even make use of our onComplete function to get a random logo when the animation resets: bubble-random-loop.
I use a very similar technique to the above to achieve this animation on the homepagewhere the next track in the track list is selected from an array and then appended to the list. I hope that was interesting! My hope is that you now have a few ideas for how to add a bit of animation and interactivity to you own sites. I have been using Vue. If you have any questions or find anything wrong in my code please do let me know in the comments! Toggle navigation Toggle Search.The effects and animations in this tutorial are inspired by 2 great websites — heartkids.
Do you prefer to watch videos instead of following written tutorials? You can watch this tutorial on my YouTube Channel. Ready to get your hands dirty with GreenSock? I also assume that you already know what GreenSock is. This makes them cover only half of the screen. Here is the visual image of our html layout. It contains 3 homeSlide containers with a unique class slide01slide02 and slide03 and a unique background image. Similar structure, classes and styles are applied to the.
All the interactivity will happen in the main. These variables are all the elements on the page that we will be interacting with. We are simply targeting each element by their class or tag eg. If you are a beginner or want to refresh your jQuery knowledgeread this jQuery Datatypes and Selectors guide. The first tween inside of the init function will hide all slides apart from the one with a class.
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The second tween will fade out the arrow pointing down because at that moment there is no previous slide. We can remove the alert inside of goToNextSlide and update the click function to pass through the slideOut and slideIn. Everytime the user clicks on the navigation, we want to pass the right slideOut and slideIn elements. This means that on a page load the slideOut is. Then we are getting h1 and p of both slideIn and slideOut so we can animate them in different directions.
Note: paste the following code inside of the goToNextSlide function, where indicated by the comment. Firstly we are positioning the new slide slideIn out of the viewport and adding.
The main image tweens are highlighted in green and both of them are happening at the same time as the text is fading out.
Read more about positioning of tweens on the GreenSock timeline. To avoid the transition into a blank slide essentially there is no next slide when we are on the. This will check whether there is a next slide and if there is, we will play our timeline. Both of these variables return 3 on the last slide, that is when we want to fade out the arrow up. The function to control the movement in the opposite direction looks almost identical.
We will call this function goToPreviousSlide and will also pass through the correct slideOut and slideIn to it. All the tweens within this timeline have the values reversedin other words what was animating from the bottom is now coming from the top.
Now we have a fully functionally fullscreen slideshow, but we will add one more subtle effect to it. Inside of the.ScrollScene is an extra layer on top of ScrollMagic as well as using IntersectionObserver to achieve similar effects. GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.
Work fast with our official CLI. Learn more. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again.
If nothing happens, download the GitHub extension for Visual Studio and try again. Scene options under the scene key to contain those options. Same for new ScrollMagic. Controller options under the controller key to contain those options. Add event handlers on or setPin. Add methods to the controller. But be careful if you're using the built-in globalControlleras it'll impact all the scenes you have. I added to this package a modified version of the addIndicators plugin. It's easy to use.
Just remember to remove it after you're done testing so it doesn't go into production. Note : Notice that it's scrollScene. The below would create an array of thresholds [0, 0. The below adds extra options to the IntersectionObserver. See others properities you could add here. Whatever you've named your scene, whether const scrollScene or const scrollObserveryou can destroy it with With React it's best to do this inside either a useEffect hook or using the componentDidMount and componentWillUnmount lifecycle.
Whatever you choose, make sure to destroy the scene on the unmount. See the Storybook source for good examples story. You can now set breakpoints so you scene is more responsive.
They work mobile first. The below would set up a scene on tablet, but not mobile, and resizing will init and destroy. With Next. For more on ScrollMagic, hit up scrollmagic. We use optional third-party analytics cookies to understand how you use GitHub.
You can always update your selection by clicking Cookie Preferences at the bottom of the page.Performance is paramount, especially on mobile devices with sluggish processors.
What was jerky and twitchy is now fluid. Check out the speed test for a head-to-head comparison. Animate colors, beziers, css properties, arrays, scrolls and lots more.
Use your favorite tools without jumping through endless hoops to ensure compatibility. It even accommodates various transforms scale, skew, rotation, x, and y in modern browsers plus IE back to version 9 without requiring clunky browser prefixes and hacks.
If not, one can be created. The possibilities are endless. Modular, flexible, and ultra-efficient, its plugin architecture keeps the core engine tight while allowing virtually any feature to be added via optional plugins. GSAP packs an amazing amount of power into a surprisingly small package. This approach minimizes load times and maximizes performance.
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Nest timelines inside other timelines. Insert gaps, callbacks, labels, staggered tweens, and more. You get precise control over timing and unprecedented flexibility to create expressive animations with minimal code. Everybody needs a little help sometimes. With a proven track record of active participation by the author and an army of fellow users, GreenSock tools are unlike most open source projects that stagnate or offer zero support.
Animating with code may seem intimidating at first, but don't worry, our platform was engineered to make it simple and intuitive. This article is packed with tips focused on how to structure your code for a faster workflow and more control.
There are plenty of videos and demos that will get you animating in no time. The secret to building gorgeous sequences with precise timing is understanding the super-flexible "position" parameter which controls the placement of your tweens, labels, callbacks, pauses, and even nested timelines.Understanding horlicksba5202.funedia()
I'm trying to implement Google Sign In and retrieve the profile information of the user. The error is: Uncaught ReferenceError: gapi is not defined. Why is that? It happens because you have async and defer attributes on your script tag. To wait for gapi before executing this code you can use onload query param in script tag, like following:. I think you'll find with the above example that this won't work either, as gapi.
The problem is not only in gapi. To call init method - auth2 object must be initialized. There is a promise once a google auth object is in fully initialized GoogleAuth.
See Integrating Google Sign-In using listeners. Learn more. Asked 5 years, 3 months ago. Active 11 months ago. Viewed 70k times. Jon Tan Jon Tan 1, 2 2 gold badges 13 13 silver badges 26 26 bronze badges. Active Oldest Votes. Deferred ; window. Bogdan Savluk Bogdan Savluk 5, 1 1 gold badge 25 25 silver badges 32 32 bronze badges.
That was the first thing I tried. Sorry I didn't mention it before.MotionPathPlugin allows you to easily move any object along a path. GreenSock is used in some of the most popular Three. Animate any object in a scene. PixiPlugin makes animating Pixi. Animate position, scale, color effects and more with all the power and control of GSAP and the rendering speed of Pixi. GSAP makes animating with Canvas even easier by providing an easier way to look and sequence animations.
GSAP is used on over 8, sites and over 1, sites featured on Awwwards. For some of our favorites, check out our showcase. GSAP works great with React and other frameworks. Too many developers myopically focus on a simplistic "aggregate total file size" mentality instead of the broader goal of improving user experience. You need to impress the client with eye-catching animations that perform well on every device, or maybe you're building a sophisticated UI that calls for buttery-smooth draggable elements that flick and glide naturally to precise locations you define.
You're not looking for a simplistic jQuery plugin that was slapped together in someone's free time - you need professional-grade, reliable tools. You've come to the right place. We've spent crazy amounts of time obsessing about code so you don't have to.
Detailed docshelpful videos and tutorialsand community forums are all at your finger tips. Leaderboard More More. The new plugin has arrived Control performant Canvas animations GSAP makes animating with Canvas even easier by providing an easier way to look and sequence animations. Award winning websites GSAP is used on over 8, sites and over 1, sites featured on Awwwards.
View showcase. Featured GSAP 3 demos. ScrollTrigger creates jaw-dropping scroll-based animations with minimal code. Or trigger anything scroll-related, even if it has nothing to do with animation.
It also allows you to create complex tweens with various easing using a single tween. Morph any SVG shape into any other shape smoothly regardless of the number of points in each. One of our most popular plugins that creates fun, unique effects! Rethinking Kilobytes Too many developers myopically focus on a simplistic "aggregate total file size" mentality instead of the broader goal of improving user experience.
View all blog posts. Deadlines are looming. For an all access pass to premium content:. Join Club GreenSock. Learning Center Get up to speed fast in our learning center that's stocked with videos and helpful articles. Get Started. Get Support.We have since released GSAP 3 with many improvements. While it is backward compatible with most GSAP 2 features, some parts may need to be updated to work properly. Please see the GSAP 3 release notes for details. Rodrigo is a seasoned React developer and he was one of our first moderators, serving the GreenSock community since with his expert help and friendly charm.
As GSAP becomes the de-facto standard for creating rich animations and UI's on the web, developers must learn how to integrate it with other tools like React which has become popular because it allows developers to write their apps in a modular, declarative and re-usable fashion. As a moderator in the GreenSock forumsI've noticed that there are a few common hurdles to getting the two working together seamlessly, like referencing the DOM element appropriately, doing things The React Wayetc.
We won't delve into how a React app should be structured since our focus is on using GSAP, but the techniques used throughout this guide follow the official guidelines and have been reviewed by maintainers of the React Transition Group tool. We'll start simple and get more complex toward the end. GSAP basically updates numeric properties of an object many times per second which creates the illusion of animation.
As you can see this means that we need access to the actual DOM node rendered in the document in order to pass it to the TweenLite. We'll use the ref to access the DOM node and the componentDidMount lifecycle method of the component to create our first animation, because this will guarantee that the node has been added to the DOM tree and is ready to be passed into a GSAP animation.
Not that difficult, right? Let's go through the code so we can understand what is happening. First when we create an instance of this class, two properties are added to it: myElement and myTweenbut both are equal to null. After the new instance has been initialized, the render method runs. In the render method we're using the ref attribute that is basically a function that has a single parameter — the DOM node being added to the DOM tree.
At this point we update the reference to the DOM node created in the class constructor. After that, this reference is no longer null and can be used anywhere we need it in our component. Finally, the componentDidMount method runs and updates the reference to myTween with a TweenLite tween whose target is the internal reference to the DOM node that should animate. Simple, elegant and very React-way of us!