3 replies

venus – 15-09 Dec 10

Can i write this condition in shorter version?
I want to get last index of array

arr

arr

and if the array is emty, I want to get

(so basically add

-1

-1

arr.length

arr.length

arr.length

arr.length

is not

)

const index = !!arr.length ? arr.length - 1 : 0;

const index = !!arr.length ? arr.length - 1 : 0;