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WPD 680 • Mozilla’s Positron and SpiderNode projects • Counting checkboxes with CSS counters • Intersection Observer in Canary

  • Posts

    • Embedding web technologies - Mozilla’s Positron and SpiderNode projects, @………’s post
  • Misc

    • @………: EventListenerOptions (spec) allows us to extend addEventListener() with new features, disc.
  • Demos

    • Counting the number of checked checkboxes with CSS counters (poc), @………’s post

  • Other

    • The Intersection Observer API has been enabled by default in Chrome Canary, status (explainer)
      • This API can be used to (async.) observe element visibility (“when an element comes into, or passes out of, view”); use cases: recycle elements inside “data scrollers”, delay loading resources until they’re “near the viewport”.
    • Streaming JSON with the Fetch/Streams APIs (response.body is a readable stream; spec), demo
    • Web Cryptography API code samples (computing a checksum, encrypting data), @………’s post

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