book

Creating Web Animations

by Kirupa Chinnathambi

March 2017

Beginner

210 pages

English

O'Reilly Media, Inc.

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Know Your Basic HTML, CSS, and JavaScriptAbout Authoring ToolsUsing the Code ExamplesO’Reilly SafariGetting Help/Contacting the AuthorContacting O’ReillyAcknowledgments
What Is an Animation?The Start and End StatesInterpolationAnimations on the WebConclusion
Creating a Simple AnimationWhat Just HappenedThe NameDuration and KeyframesLoopingThe Longhand VersionConclusion
Creating a Simple TransitionWhat Just HappenedThe Longhand VersionConclusion
What Is a Timing Function?Timing Functions in CSSTiming Functions in CSS AnimationsTiming Functions in CSS TransitionsMeet the Timing Function CurveThe cubic-bezier Timing FunctionThe step Timing FunctionConclusion
What Is a Smooth Animation?Creating Responsive 60 fps AnimationsMeet the Animation-Friendly PropertiesPush Element Rendering to the GPUConclusion
It’s Just Property ChangesThe ExampleInitial State Using CSS, Changes Using JSWhat Just Happened?A Tale of Two Styling ApproachesSetting the Style DirectlyAdding and Removing Classes Using JavaScriptAnimating with requestAnimationFrameConclusion
SimilaritiesDifferencesTriggeringLoopingDefining Intermediate Points/KeyframesSpecifying Properties Up FrontInteraction with JavaScriptConclusion

The Starting PointAnimated UnderlineSimple Background Color ChangeCooler Background Color ChangeConclusion
The ExampleThe CSS AnimationThe Easing FunctionConclusion
How the Sliding Menu WorksCreating the Sliding MenuThe Initial PageAdding the MenuMaking the Menu WorkAdding Some Finishing TouchesConclusion
The Basic IdeaThe ContentIt’s Scrolling TimeIdentifying the ElementsModifying the ElementsBuilding It All OutListening to the Scroll EventDetecting When Elements Are VisiblePutting It All TogetherSome Performance ConsiderationsConclusion
The Full HTML and CSSDeconstructing This EffectLooking at the CSSFaking RandomnessSlightly Different Variants of Style Rules + KeyframesAltering Some CSS Properties and Their Values…Inline!Conclusion
Overview of How the Parallax Effect WorksGetting StartedAdding Our Background ElementsThe JavaScriptConclusion
Creating the Sprite SheetThe Actual ImplementationIt’s Animation TimeThe Steps Easing Function in ActionConclusion
Overview of How It WorksThe ContentThe Content (For Realz This Time)What You Just DidClipping the ContentThe Navigation LinksMaking the Content Actually SlideAdding the JavaScriptAdding the TransitionUnderstanding the Code (and More!)What’s Really Going OnThe Role of the data-pos AttributeIt’s All About the JavaScriptConclusion
Until Next Time

Content preview from Creating Web Animations

Preface

Animations are everywhere. Today, anything you do on a device with a screen is just one click, tap, or keystroke away from springing to life. As it turns out, animations are no longer a luxury or something to keep under wraps. Instead, they make up a large part of your experience using applications in your browser, on your phone, or on any other “smart” device. It’s no surprise why. Users love animations. When done right, animations can make your applications easier to navigate, make your content more presentable, and even help your creations feel more alive and fun. Sometimes, animations look cool and you just gotta throw them in. These are all good things!™

What’s the catch? Well, for all the great things animations have going for them, creating them is hard. On the web, the way you think about animations is different. The way you create them is also different…really different. The challenges that you once painfully overcame in older technologies like Flash are back in new and interesting ways. Fortunately, this is all part of learning something new. All you need is the right guide to help you along the way.

That guide is going to be me:

Hi. My name is Kirupa, and I love animation. Ever since my parents bought me a computer in the early 1990s, I’ve been trying to get things to move on the screen and tell everybody how awesome it is. Nothing much has changed in my ...