🔥 Top 7 Mind-Blowing JavaScript Features for 2024

Vitalii Shevchuk

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ITNEXT

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4 min read

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3 days ago

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JavaScript is a powerful and versatile programming language that is constantly evolving. In 2024, we can expect to see a number of new features that will make JavaScript even more powerful and expressive. Here are five of the most mind-blowing JavaScript features that are expected to arrive in 2024

1. Promise.withResolvers

This feature introduces a new method to create a promise that exposes its resolve and reject callbacks. With Promise.withResolvers, developers can create promises that can be resolved or rejected outside of their executor function, providing greater flexibility in asynchronous programming.

const [promise, resolve, reject] = Promise.withResolvers();

setTimeout(() => resolve('Resolved after 2 seconds'), 2000);

promise.then(value => console.log(value));
// Output after 2 seconds: Resolved after 2 seconds

2. Object.groupBy()

The Object.groupBy() method is a new addition that allows developers to group objects in an array by a specific property, making data manipulation much…