Essential New JavaScript Features to Boost Your Code in 2024
Discover the latest JavaScript enhancements—including class member addition, private property checks with the in operator, top‑level await, error.cause for root causes, the .at() method for strings, arrays, and array‑like objects, and the safer Object.hasOwn method—each designed to streamline modern development.
Adding new members to classes.
Checking private properties using the in operator.
Using await at the top level of modules.
Utilizing error.cause to indicate the underlying reason for an error.
Introducing the .at() method for String, Array, and array‑like objects.
Accessing match indices via regular expression match results.
Employing Object.hasOwn(obj, propKey) as a safe way to check for an object's own (non‑inherited) properties.
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