关于这一集
In this episode of Syntax, Scott and Wes talk about what is new in Javascript — a whole bunch of new stuff that you can use now and in the next sixth months or so.
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Show Notes ES201904:03 - Array.flatMap() 05:30 - Array.flat() 07:37 - Array.fromEntries() 09:50 - String.trimStart() and String.trimEnd() 11:23 - Function.toString() 11:57 - Object Key Order
- Integer keys in ascending order (and strings like “1” that parse as ints)
- String keys, in insertion order (ES2015 guarantees this and all browsers comply)
- Symbol names, in insertion order (ES2015 guarantees this and all browsers comply)
14:50 - Big int 18:09 - Nullish coalescing 20:57 - Optional Chaining 24:55 - promise.allSettled 25:33 - Dynamic import 27:14 - string.matchAll(regex) and string.replaceAll 29:30 - globalThis 30:44 - Module Namespace Exports 33:11 - Navigator.share() API 36:34 - Async Hooks 37:39 - Pipline Operator 39:59 - Top Level Await
Links- https://twitter.com/wesbos/status/1181584047144878080
- https://twitter.com/wesbos/status/1238472679893671938
- https://twitter.com/wesbos/status/1230515254687301635
- Regex101
- Regexr
- https://developer.mozilla.org/en-US/docs/Web/API/Navigator/canShare
- Sketch
- CloudApp
- Figma
- https://nodejs.org/api/async_hooks.html
- Gulp
- https://v8.dev/features/top-level-await
- https://github.com/tc39/proposal-pipeline-operator
- Scott: Sapper
- Wes: Dewalt Oscillating Multitool
- Scott: Level Up Tutorials Pro - Sign up for the year and save 25%!
- Wes: All Courses - Use the coupon code ‘Syntax’ for $10 off!
- Scott’s Instagram
- LevelUpTutorials Instagram
- Wes’ Instagram
- Wes’ Twitter
- Wes’ Facebook
- Scott’s Twitter
- Make sure to include @SyntaxFM in your tweets
