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May 4th, 2020 × #javascript#events#webdev

Hasty Treat - Things You Should Know About Javascript Events

Covers key concepts around how JavaScript events work like bubbling, capturing, delegation, and preventDefault.

Wes Bos

Wes Bos Host

Scott Tolinski

Scott Tolinski Host

or
Show Notes Transcript

In this Hasty Treat, Scott and Wes talk about javascript events, and how to avoid some common pitfalls!

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Show Notes

02:23 - Event bubbling

  • Some events bubble, some don't
  • Clicks bubble
  • Mouseevents bubble
  • Focus doesn't bubble

04:10 - Event capturing

  • Capture: down, bubble up
  • Canceling: prevent default
  • target` vs currentTarget
  • currentTarget is what got clicked
  • target is what you listened for the click on
  • event.isTrusted
  • addEventListener once: true

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