How can i select multiple indexes of an array/string with JS?

Question

Python has things like "[3:]","[1:5]" and "[::-1]". How can I get similar results in JS?

Answer 1

I don't know Python, but I will list all the similar methods for JS.
var str = "SoloLearn" ;
str.substr(2, 3) // starting from the second index, selects 3, outputs "loL"
str.substring(2, 6) // starting from the second index, selects up to but not including the sixth index, outputs "loLe"
str.slice(2, 6) // the same as substring
str.slice(2) // selects from the second index to the last index, outputs "loLearn"
str.slice(2, -2) // selects from the second index, selects up to but not including the second last index, outputs "loLea"

var arr = ["Apple", "Pen, "Pineapple", "Pen"]
arr.splice(1, 2) // starting from the first index, selects 2, outpus "Pen, Pineapple"

Answer 2

I'm glad to help

Answer 3

PPAP 😁
But thx, you really really helped me!
I was trying to use For Loops, it clearly didn't work lol

Again, thx, you saved a life today