Is there a way to get a range of indexes from a javascript array? [duplicate]

Question

I am trying to find a way to get a range of 5 sequential indexes from an array of indeterminate length.

My array might look like this: [0,1,2,3,4,5,6,7]

I know I can use array.slice() if I need to return something like [2,3,4,5,6], but sometimes I might need to return something like [6,7,0,1,2]

Is there a clean or built-in way to do this?

There's nothing built in that automatically wraps around, you need to write that yourself. — Barmar
– Barmar, Commented Jan 5, 2022 at 20:11

François Huppé · Accepted Answer · 2022-01-05 20:20:32Z

-1

If I understood right, you need something like this:

function array_indexes(arr, keys){
    let res = [];
    for(let k of keys){
        res.push(arr[k]);
    }
    return res;
}

answered Jan 5, 2022 at 20:20

François Huppé

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