see map() function documentation. function loops through every item in the array by default. first argument is the function (arrow function in this case), second the current value (c) and third is the current item in the loop.

see map() function documentation. function loops through every item in the array by default. first argument is the function (arrow function in this case), second the current value (c) and third is the current item in the loop.

see map() function documentation. function loops through every item in the array by default. first argument is the function (arrow function in this case), second the current value (c) and third is the current item in the loop.

see map() function documentation. function loops through every item in the array by default. first argument is the function (arrow function in this case), second the current value (c) and third is the current item in the loop.

see map() function documentation. function loops through every item in the array by default. first argument is the function (arrow function in this case), second the current value (c) and third is the current item in the loop.

see map() function documentation. function loops through every item in the array by default. first argument is the function (arrow function in this case), second the current value (c) and third is the current item in the loop.

The first parameter of the map() method is a function, which itself can take up to three arguments. The first is required, the current value within the array which is being passed into the function, but the next argument (which is optional) is the index of the current argument. So i is not being incremented per se, but rather the lowercase character is being repeated a number of times equal to the index.

The first parameter of the map() method is a function, which itself can take up to three arguments. The first is required, the current value within the array which is being passed into the function, but the next argument (which is optional) is the index of the current argument. So i is not being incremented per se, but rather the lowercase character is being repeated a number of times equal to the index.

The first parameter of the map() method is a function, which itself can take up to three arguments. The first is required, the current value within the array which is being passed into the function, but the next argument (which is optional) is the index of the current argument. So i is not being incremented per se, but rather the lowercase character is being repeated a number of times equal to the index.