Hasty Treat - Things You Should Know About Javascript Events

Syntax

In this Hasty Treat, Scott and Wes talk about javascript events, and how to avoid some common pitfalls! Prismic - Sponsor Prismic is a Headless CMS that makes it easy to build website pages as a set of components. Break pages into sections of components using React, Vue, or whatever you like. Make corresponding Slices in Prismic. Start building pages dynamically in minutes. Get started at prismic.io/syntax. 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 Links Javascript30 BeginnerJavascript Tweet us your tasty treats! Scott’s Instagram LevelUpTutorials Instagram Wes’ Instagram Wes’ Twitter Wes’ Facebook Scott’s Twitter Make sure to include @SyntaxFM in your tweets.

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

Prismic - Sponsor

Prismic is a Headless CMS that makes it easy to build website pages as a set of components. Break pages into sections of components using React, Vue, or whatever you like. Make corresponding Slices in Prismic. Start building pages dynamically in minutes. Get started at prismic.io/syntax.

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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