Warm-Up Talk: Browser APIs – the unknown Super Heroes
summary
Live demos show concrete behavior: the Battery Status API returns level, charging state and events (demo glitches with "infinite seconds" when unplugged); the Web Audio API builds oscillators and hits a 40 kHz tone (inaudible to humans) and supports MIDI/drum machines; the Page Visibility API pauses/resumes video; speech synthesis lists voices and controls pitch/rate (Google voices require online Chrome); Web Bluetooth pairs to a PlayBulb and writes RGB bytes with audience-driven color tweets — some demos work reliably, some fail noisily.
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chapters (9)
- 0:00Intro
- 1:00Battery Status
- 2:45Battery API
- 4:23Web Audio
- 9:30Video Visibility
- 12:10Speech Synthesis
- 14:35Web Bluetooth
- 17:00RGB
- 19:25Wonder Woman








