re: 10 JavaScript array methods you should know VIEW POST

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Hey! Thanks for your article 😃
I knew most of them, except the last one. By the way, I was wondering : in which case :
const nums = Array.of(1, 2, 3, 4, 5, 6);
is better than :
const nums = [1, 2, 3, 4, 5, 6];
?

 

I think it's more likely to compare it to the array constructor. According to MDN

The difference between Array.of() and the Array constructor is in the handling of integer arguments: Array.of(7) creates an array with a single element, 7, whereas Array(7) creates an empty array with a length property of 7 (Note: this implies an array of 7 empty slots, not slots with actual undefined values).

I didn't know this method either!

 
 

He asked about [1, 2, 3, 4, 5, 6] and not Array(7), is it the same?

it is essentially the same, I just pointed out what is a better comparison case with quote from the mdn docs

Your quote from MDN has nothing to do with the question though.
const arr = [7] and const arr = Array.of(7) will give exactly the same resut.

> const arr1 = Array(7);
> const arr2 = [7];
> const arr3 = Array.of(7);

> arr1
[ <7 empty items> ]
> arr2
[ 7 ]
> arr3
[ 7 ]
> 
 

It's the same, but one is a function whereas the other is a syntactical form. You could have a situation where you pass it as a parameter or in a variable, i.e.


f = Array.of
...
a = f(1,2,3)

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