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What is the arguments object in a regular function, and why is it unavailable in arrow functions?

This story is from 2026-09-16. It is preserved in the archive; the latest stories are on the live feed.

The arguments object in JavaScript allows you to access all the arguments passed to a function as an array-like object. This feature is particularly useful when dealing with older or more complex functions where you might not know how many arguments will be passed at runtime. However, this object i…

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  1. 2026-09-16 17:09 · DEV Community — AI
    What is the arguments object in a regular function, and why is it unavailable in arrow functions?

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