Async + Await
Syntax - Tasty Web Development Treats
Wes Bos
4.9 • 1.1K Ratings
🗓️ 17 January 2018
⏱️ 55 minutes
🧾️ Download transcript
Summary
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Show Notes
02:55
- Wes' Async + Await talk on YouTube from DotJS
- JavaScript is Asynchronous
- Ryan Dhal (Creator of Node.js) original Node.js talk
06:00
- Callback Hell
- Q
- Bluebird
- What is a promise?
- Promises are an IOU
8:30
- Async + Await IS promises
- What is Async + Await?
- How does the code look?
- Returning values from an await
15:20
- Performance Considerations
- MEGA PROMISES
- Promise.all()
- Here is an example:
- const [weather, store] = Promise.all(getWeather(), getStores());
19:22
- This stuff is 100% native
- Most new Browser APIs are build on Promises
- Fetch()
- Some examples:
- await fetch(' https://api.github.com/users/wesbos').then(data => data.json())
- OR
- await (await fetch(' https://api.github.com/users/wesbos')).json()
- Axios
22:48
- The Payment Request API
- You should listen to episode 006 on accepting money on the internet
- Web Animation API
27:00
- Snackisodes
- Snack Packs
- Hasty Treats?!!!
28:00
- Making callback-based functions promised basked
- es6-promisify
- util.promisify()
30:00
- Error Handling Methods
- View my slides for some code examples.
- Try/Catch
- High Order Function
- Just handle the error when you callIt().catch(dealWithIt);
- Node's process.on('unhandledRejection') event
36:00
- Browser Support
- Babel it!
38:00
SIIIIICK PICKS
42:00
- Scott: Ring Doorbell
- Wes: The Indicator Podcast
47:00
- Sick Tip
- Chrome's Autoplay is changing
- Details on this
- Visit chrome://media-engagement to see your scores
Shameless Plugs
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
Transcript
Click on a timestamp to play from that location
| 0:00.0 | You're listening to Syntax, the podcast with the tastiest web development treats out there. |
| 0:06.0 | Strap yourself in and get ready. Here is Scott Tolinsky and West Boss. |
| 0:10.5 | Hello everybody and welcome to Shop Talk Oh wait. No, no, that's not I'm not Chris. Okay. Hello everyone |
| 0:17.1 | Welcome to syntax actually what's funny about that is the amount of times people tweet me and get me or you can confuse with Chris or Dave |
| 0:28.5 | I guess two white dudes on a podcast talking tech |
| 0:32.4 | I'll pick confusing Nice on a podcast talking tech. It's a little bit confusing. |
| 0:34.0 | Nice. |
| 0:35.0 | Welcome everyone, how are you doing today, Scott? |
| 0:38.0 | Hey, I'm doing, I'm cold. |
| 0:40.0 | I'm sure a large part of, you know, North America is cold right now. |
| 0:44.7 | So, very cold. |
| 0:46.1 | Yeah, I woke up today and like the furnace like couldn't hang, |
| 0:48.9 | so it's like really chilly in our house right now. |
| 0:51.8 | Oh, like your furnace is like just totally dead? |
| 0:54.0 | No, it's, we have an old house. |
| 0:57.0 | Yeah. |
| 0:58.0 | Yeah. |
| 0:59.0 | And the windows are probably the culprit of all of our |
| 1:04.0 | insulation issues but like because of that our house does not stay super warm and the |
| 1:08.8 | furnace is just like |
| 1:10.3 | it's too cold for me right now I'm having a hard time keeping your house warm. Yeah. Yeah. Oh boy. We just got new doors. Yeah, we have a super old house as well and we have new windows, but we just got new doors and like the amount of how nice and |
| 1:23.3 | warm it is and then I also spend an entire day going around with a can of spray |
... |
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