#vanilla javascript
Linda Ikechukwu
Mar 26, 2021 ⋅ 4 min read

New ES2021 features you may have missed

Linda Ikechukwu Frontend developer. Writer. Community Strategist. Building web interfaces that connect products to their target users.

Recent posts:

5 Best JavaScript Multi-Dimensional Array Libraries

5 best JavaScript multidimensional array libraries

Learn more about the 5 best JavaScript libraries for dealing with multidimensional arrays, such as ndarray, math.js, and NumJs.

Pascal Akunne
Nov 30, 2023 ⋅ 4 min read
Dom Scandinaro Leader Spotlight

Leader Spotlight: Leading by experience with Dom Scandinaro

We spoke with Dom about his approach to balancing innovation with handling tech debt and to learn how he stays current with technology.

Jessica Srinivas
Nov 30, 2023 ⋅ 6 min read
Vite Adoption Guide Overview Examples And Alternatives

Vite adoption guide: Overview, examples, and alternatives

Vite is a versatile, fast, lightweight build tool with an exceptional DX. Let’s explore when and why you should adopt Vite in your projects.

David Omotayo
Nov 29, 2023 ⋅ 16 min read
Implementing Advanced Features With The Navigator.Share API

Implementing advanced features with the navigator.share API

Explore advanced capabilities for content sharing with the navigator.share API, including dynamic content sharing, custom share targets, and batch sharing.

David Omotayo
Nov 29, 2023 ⋅ 10 min read
View all posts

3 Replies to "New ES2021 features you may have missed"

  1. Hi, thanks for writing this good article, I love it.

    However I want to propose a correction for Promise.all in Promise.any part, The Promise.all should be reject if any of the promise rejected and resolve if all promise resolved.


    Keep writing good stuff.

  2. “`
    const promise1 = new Promise((resolve) => setTimeout((resolve) => resolve, 300, ‘faster’);
    const promise2 = new Promise((reject) => setTimeout( (reject) =>reject, 100,”fastest”)
    const promise3 = new Promise((resolve) => setTimeout( (resolve) => resolve,700,’fast’);

    This promise code is just completely wrong, even if you fix the missing closing brackets. Your `setTimeout` calls take a `resolve => resolve` callback, but this reject is not the one from the promise, it’s an internal parameter of the callback. You might as well have passed the callback `foo => foo` , and it will have the same result.

    `promise2` even renames the “resolve” parameter as `reject`. Further adding to the wrongness.

    I believe you meant:

    const promise2 = new Promise((_, reject) => setTimeout(reject, 100,”fastest”));

Leave a Reply