Why use map if you will not use the return value? forEach will do in that case.
map
forEach
You could also use reduce:
reduce
[1, 2, 3, 1, 3].reduce(function (accu, curr) { if (!accu.includes(curr)) accu.push(curr); return accu; }, [])
The filter solution is clever 😜
filter
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Why use
mapif you will not use the return value?forEachwill do in that case.You could also use
reduce:The
filtersolution is clever 😜