Given an array
const list = [1, 2, 3, 4, 5]
The easiest and most intuitive way is to call the
reverse() method of an array.
This method alters the original array, so I can declare
list as a const, because I don’t need to reassign the result of calling
list.reverse() to it:
const list = [1, 2, 3, 4, 5] list.reverse() //list is [ 5, 4, 3, 2, 1 ]
You can pair this method with the spread operator to first copy the original array, and then reversing it, so the original array is left untouched:
const list = [1, 2, 3, 4, 5] const reversedList = [...list].reverse() //list is [ 1, 2, 3, 4, 5 ] //reversedList is [ 5, 4, 3, 2, 1 ]
Another way is to use
slice() without passing arguments:
const list = [1, 2, 3, 4, 5] const reversedList = list.slice().reverse() //list is [ 1, 2, 3, 4, 5 ] //reversedList is [ 5, 4, 3, 2, 1 ]
but I find the spread operator more intuitive than
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