Working with files accessed by the user
- <input type="file">, native drag&drop in HTML5
- FileList, File, FileReader and URL API
- Image preview before uploading
- FormData API (send data to server)
Session History Management ("History API")
- how to maintain user experience when changing page content
- Back button treatment in AJAX applications
- history.pushState, history.replaceState
- popstate event on window object
Storing data in the browser
- treatment of page refresh button (F5)
- WebStorage (localStorage)
- IndexedDB
Working with animations
- API for working with CSS3 animations
- requestAnimationFrame
Working with graphics
- <canvas> in 2d context - programmable image
Loading input from webcam and microphone
- getUserMedia and downstream APIs
Improved form validation in HTML5
- new form element types and attributes
- Constraint and Validation API
Working with data from other domains (CORS)
- Cross-Origin Resource Sharing
- use for AJAX, canvas and external files
Fetch API basics (modern successor to AJAX)
JavaScript in separate threads (Worker)
Service worker (resource caching, offline applications)
Reacting to page scrolling, lazy-loading
