Watch Your Back, Browser! You're Being Observed

Explore the Observer/Observable APIs and their potential to simplify common development challenges in this conference talk from JSConf Budapest 2017. Learn about Intersection Observer for efficient lazy loading and scroll handling, Mutation Observer for tracking DOM changes, and Performance Observer for gathering real user metrics. Discover how these modern APIs can replace traditional solutions, making code more efficient and easier to maintain. Gain insights into compatibility issues, polyfills, and the future of browser observations with ResizeObserver and ResizeObservables.

Introduction
Why conferences
Lazy loading
Scroll handlers
Intersection Observer
Intersection Observer options
Intersection Observer demo
Incompatibilities
Mutation Observer
Web Performance
Real User Metrics
User Timing API
Performance Observer
Paint Timing API
Safari
Resize Observer
Polyfill
Resize
Observables
Collection
Timeline