map method to iterate over an array in JavaScript
Given an array of numbers. Using the
map method, extract the square
root of each array element and write
the result to a new array.
Given an array with strings. Using the
map method, add the character
'!' to the end of the value of
each array element.
Given an array with strings. Using the
map method, reverse the
characters of each string.
Given the following array:
let arr = ['123', '456', '789'];
Using the map method, transform
this array into the following:
let arr = [
[1, 2, 3],
[4, 5, 6],
[7, 8, 9]
];
Given an array of numbers. Using the
map method, write to each element
of the array the value of this element
multiplied by its index number in the array.
