- [Instructor] Some browsers are adding…a Network Information API extension…known as the Save Data Flag.…When the flag is enabled, currently in Chrome and Opera,…it's a Boolean flag telling us if we should be saving data…or not.…And it sits on top of the Network Information API…so it's available on navigator.connection.…To read that flag we need to check…for navigator.connection.saveData common case.…
The idea here is that this is a flyer to tell us…hey developer be careful with the data…that you are consuming from the network…because the user or the current conditions are ideal…for saving data to improve performance.…Today, for example, on Chrome on Android…the user can go to Settings enable the Data Saver.…If the user uses Data Saver then the flag will be on.…And for example future versions of Chrome…are making some decisions such as…if the user is in 2G.…
- Understanding the Performance APIs
- Navigation Timing
- Calculate milestones in the Performance Timeline
- Measuring the timing of navigation, resources, servers, and more
- Reading network and device information
- Optimizing code
Skill Level Advanced
Designing Websites for Performancewith Brian Wood43m 32s Appropriate for all
1. Reactive Web Performance
2. Performance Basics
3. Measure Performance
4. Decision-Making Helpers
5. Execute Code More Efficiently
Next steps1m 31s
- Mark as unwatched
- Mark all as unwatched
Are you sure you want to mark all the videos in this course as unwatched?
This will not affect your course history, your reports, or your certificates of completion for this course.Cancel
Take notes with your new membership!
Type in the entry box, then click Enter to save your note.
1:30Press on any video thumbnail to jump immediately to the timecode shown.
Notes are saved with you account but can also be exported as plain text, MS Word, PDF, Google Doc, or Evernote.