Array Map Javascript Arrow Function

I would like to keep the same sort order. The callback function () is called on each array element, and the map () method always passes the current element, the index of the current element, and the whole array object to it. Let's analyze what happened here.

I wanted to understand in depth why this works [0, 1, 2].map(i => i + 1) but this doesn't [0, 1, 2].map(i => {i + 1}) i had this problem when i was working on a jquery script. This method accepts five parameters as mentioned above and described below: Array.map (callback (element, index, arr), thisarg) parameters:

If you want to mutate the array in some way, you may want to consider array.reduce(), as it can both filter and mutate the returned array (or really do many other things as well).

// function expression let x = function(x, y) { return x * y; The parent array, where to extract the new array.map(): I would like to keep the same sort order. One of the most used and popular functions is array.map which takes one array and returns converted (mapped) values according to.