What are the differences between rest parameters and the arguments object in JavaScript?

What are the differences between rest parameters and the arguments object in JavaScript?

Rest parameters allow you to represent an indefinite number of arguments as an array, while the arguments object is an array-like object that contains all the arguments passed to a function.

Can you give me an example of how to use rest parameters?

Sure! You can define a function like this: function sum(...numbers) { return numbers.reduce((a, b) => a + b, 0); }. This will sum all the numbers passed to it.

And how would I use the arguments object?

You can use it like this: function sum() { let total = 0; for (let i = 0; i < arguments.length; i++) { total += arguments[i]; } return total; }. This will also sum all the arguments.

Are there any limitations to using the arguments object?

Yes, the arguments object does not have array methods like map or forEach, and it is not a true array, which can limit its usability.